WO2023115671A1 - Device and method for measuring magnetic parameter of giant magnetostrictive material - Google Patents
Device and method for measuring magnetic parameter of giant magnetostrictive material Download PDFInfo
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- WO2023115671A1 WO2023115671A1 PCT/CN2022/072105 CN2022072105W WO2023115671A1 WO 2023115671 A1 WO2023115671 A1 WO 2023115671A1 CN 2022072105 W CN2022072105 W CN 2022072105W WO 2023115671 A1 WO2023115671 A1 WO 2023115671A1
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- giant magnetostrictive
- magnetic
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- magnetostrictive element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/18—Measuring magnetostrictive properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- the invention relates to the technical field of magnetic measurement, in particular to a measuring device and a measuring method for the magnetic parameters of giant magnetostrictive materials.
- Giant magnetostrictive materials are a class of materials with magnetostrictive properties. Since the emergence of giant magnetostrictive materials, they have attracted widespread attention due to their large magnetostrictive strain under a magnetic field. Giant magnetostrictive materials (GMM) have the characteristics of converting electrical energy into mechanical energy or converting mechanical energy into electrical energy in engineering. researchers have developed magnetic control actuators, magnetic field sensors, energy conversion, etc. by using its magnetic-force conversion principle. High precision, high energy density components.
- giant magnetostrictive materials under the action of alternating magnetic field, the material produces mechanical vibration at the same frequency as the alternating magnetic field. energy device.
- giant magnetostrictive material transducers For example, in the development process of acoustic wave remote transmission technology for measurement while drilling, the generation of low-frequency elastic carrier waves propagating along the drill string requires the use of giant magnetostrictive material transducers to excite.
- the present invention provides a measuring device and measuring method for the magnetic parameters of giant magnetostrictive materials, which can realize continuous adjustment of the external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field
- the measurement of the magnetic parameters of the giant magnetostrictive material can measure the change law of the magnetic parameter of the giant magnetostrictive material with temperature and pressure under the action of different bias prestress.
- the present invention provides the following technical solutions:
- a device for measuring magnetic parameters of giant magnetostrictive materials comprising: an external magnetic field component, a non-magnetic pressure vessel component, a prestress application component, a magnetic parameter detection component, a temperature control component, a pressure control component and a giant magnetostrictive element;
- the external magnetic field assembly includes two magnetic poles, and a non-magnetic pressure vessel assembly is arranged between the two magnetic poles.
- the non-magnetic pressure container assembly includes a non-magnetic shell, and the non-magnetic shell is sealed to form a high-temperature and high-pressure container. , placing the giant magnetostrictive element inside the container;
- a prestress application assembly, a temperature control assembly and a pressure control assembly are installed on the non-magnetic shell, and the prestress application assembly is in contact with the giant magnetostrictive element to adjust the prestress applied to the giant magnetostrictive element. Stress; the temperature control assembly and the pressure control assembly are respectively used to adjust the temperature and pressure in the high temperature and high pressure container;
- the magnetic parameter detection component is installed on the giant magnetostrictive element, and is used to detect the deformation amount and surface magnetic field strength of the giant magnetostrictive element under different external magnetic fields, prestress, temperature, and pressure.
- the external magnetic field component further includes a constant current source, a coil, and a magnetic pole spacing adjustment component, and the constant current source supplies power to the coil to generate an external magnetic field.
- the giant magnetostrictive element undergoes magnetostriction under the action of the external magnetic field.
- the external magnetic field assembly realizes the precise adjustment of the external magnetic field by changing the magnitude of the current input to the coil by the constant current source and adjusting the distance between the magnetic poles through the magnetic pole spacing adjustment assembly.
- the non-magnetic pressure vessel assembly further includes a non-magnetic sample holder, and the non-magnetic sample holder is fixed inside the non-magnetic shell for supporting the magnetic parameter detection assembly And the giant magnetostrictive element.
- the prestressing assembly includes a prestressing screw and a prestressing display instrument, and the size of the prestress is adjusted by pump pressure, so as to provide the giant magnetostrictive element with an adjustable bias prestress.
- the temperature control assembly includes a heating device for providing an adjustable temperature field for the giant magnetostrictive material element.
- the pressure control assembly includes a pressurizing device for providing an adjustable pressure field to the magnetostrictive material element.
- the magnetic parameter detection device includes a strain gauge sensor and a magnetic field sensor; the strain gauge sensor is installed on the side of the giant magnetostrictive element for detecting the deformation of the giant magnetostrictive element; the magnetic field The sensor is installed between the giant magnetostrictive element and the prestressed screw rod, and is used for measuring the surface magnetic field intensity of the giant magnetostrictive element.
- the present invention also discloses a method for measuring the magnetic parameters of giant magnetostrictive materials, which is implemented on the basis of the above-mentioned measuring device for magnetic parameters of giant magnetostrictive materials.
- the method includes the following steps:
- Step 1 Adjust the pump pressure to adjust the prestress applied to the giant magnetostrictive material through the prestress applying component, and display the prestress through the prestress and pressure display instrument;
- Step 2 Use a constant current source to supply direct current to the external magnetic field component to make it generate an external magnetic field, apply a certain magnetic field strength to the giant magnetostrictive element to make the giant magnetostrictive element stretch and deform, and record the external magnetic field B at this time;
- Step 3 Measure the magnetic induction intensity H on the surface of the giant magnetostrictive element through a magnetic field sensor installed on the surface of the magnetostrictive material;
- Step 4 Connect the strain gauge sensor installed on the side of the giant magnetostrictive element to the strain gauge, and measure the deformation of the giant magnetostrictive element through the strain gauge sensor;
- Step 5 Record the above-mentioned measured bias stress, external magnetic field B, surface magnetic field strength H of the giant magnetostrictive element, and the data measured on the strain gauge;
- Step 6 Change the current magnitude of the direct current, and repeat the above steps 1 to 5 in sequence.
- the invention provides a temperature characteristic and pressure characteristic test device for the magnetic parameters of giant magnetostrictive materials.
- the device has the advantages of continuously adjustable external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field. , can measure giant magnetostrictive material under the action of different bias prestressing magnetic parameters of giant magnetostrictive material change law with temperature and pressure.
- the invention can realize the change curve of the magnetic parameters of the giant magnetostrictive smart material with the temperature field and the pressure field under different bias stresses, including the relationship between the B-H curve and temperature and pressure, and the relationship between the S-H curve and the temperature The relationship between pressure and pressure; under a certain bias magnetic field, different stresses are applied to measure the magnetic induction of the magnetostrictive material rod, and the relationship between the B-T curve and temperature and pressure is obtained.
- FIG. 1 is a schematic structural diagram of a device for measuring magnetic parameters of giant magnetostrictive materials in Embodiment 1 of the present invention.
- 1 magnetic pole 1 magnetic pole
- 2 giant magnetostrictive element 3 prestressed screw
- 4 non-magnetic shell 5 non-magnetic sample holder
- 6 strain gauge sensor 7 magnetic field sensor
- 8 temperature measuring device 9 pressurizing device
- 10 Heating device 11 wire connector
- 12 constant current source 13 coil
- 14 pressure display instrument 15 prestress display instrument
- 16 magnetic pole spacing adjustment component 16 magnetic pole spacing adjustment component.
- the invention discloses a device for measuring magnetic parameters of giant magnetostrictive materials.
- the device has the advantages of continuously adjustable external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field, and can measure super Variation of magnetic parameters of giant magnetostrictive materials with temperature and pressure under different bias prestress.
- Fig. 1 is a structural schematic diagram of a measuring device for magnetic parameters of a giant magnetostrictive material according to the present invention. As shown in Figure 1, this embodiment discloses a device for measuring the magnetic parameters of giant magnetostrictive materials, including: an external magnetic field assembly, a non-magnetic pressure vessel assembly, a prestress application assembly, a magnetic parameter detection assembly, a temperature Control components, pressure control components and giant magnetostrictive elements.
- the external magnetic field assembly includes two magnetic poles 1, a non-magnetic pressure vessel assembly is arranged between the two magnetic poles 1, the non-magnetic pressure vessel assembly includes a non-magnetic shell 4, and the non-magnetic shell 4 is sealed, A high-temperature and high-pressure container is formed to maintain the pressure and temperature required for the experiment while reducing the influence of the container material on the magnetic field in the sample.
- the giant magnetostrictive element 2 is placed inside the container.
- a prestressing assembly, a temperature control assembly and a pressure control assembly are installed on the non-magnetic shell 4, and the prestressing assembly is in contact with the giant magnetostrictive element 2, and the adjustment is applied to the giant magnetostrictive element 2.
- the prestress on the upper; the temperature control assembly and the pressure control assembly are used to adjust the temperature and pressure in the high-temperature and high-pressure container respectively.
- the magnetic parameter detection component is installed on the giant magnetostrictive element 2, and is used to detect the deformation and surface magnetic field strength of the giant magnetostrictive element under different external magnetic fields, prestress, temperature, and pressure.
- the external magnetic field component also includes a constant current source 12 , a coil 13 and a magnetic pole spacing adjustment component 16 , and the coil 13 is powered by the constant current source 12 to generate an external magnetic field.
- the coils 13 are respectively wound on the two magnetic poles 1 , and the constant current source 12 supplies power to the coils 13 to generate an external magnetic field.
- the magnetic pole spacing adjustment assembly 16 includes a knob, which is installed at one end of the magnetic pole 1, and the distance between the two magnetic poles 1 can be adjusted by turning the knob.
- the external magnetic field component realizes precise adjustment of the external magnetic field by changing the magnitude of the current input from the constant current source 12 to the coil 13 .
- the external magnetic field assembly realizes precise adjustment of the external magnetic field by changing the magnitude of the current input by the constant current source 12 to the coil 13 and by adjusting the distance between the magnetic poles through the magnetic pole spacing adjustment assembly 16 .
- the giant magnetostrictive element 2 undergoes magnetostriction under the action of the external magnetic field.
- the non-magnetic pressure vessel assembly also includes a non-magnetic sample holder 5, which is fixed inside the non-magnetic shell 4 for supporting the magnetic parameter detection component and the supermagnetic Telescopic element 2.
- One end opening of the non-magnetic shell 4 is convenient for installing or unloading giant magnetostrictive element experimental samples, magnetic field sensors and strain gauge sensors, and sealing is realized by fixing the cover plate on the open end of the non-magnetic shell 4 .
- Wire connectors 11 are hermetically installed on the side of the non-magnetic shell 4 to facilitate the extraction of sensor signals and measurement signals inside the non-magnetic shell 4 .
- the prestressing assembly includes a prestressing screw 3 and a prestressing display instrument 15, which can adjust the size of the prestress by pump pressure, and is used to provide the giant magnetostrictive element with an adjustable bias prestress.
- the giant magnetostrictive element is located in the driving coil assembly, that is, the giant magnetostrictive element is located in an external magnetic field, and under the action of bias prestress, axial magnetostrictive strain occurs along the bracket.
- the prestressed screw 3 is fixed on the cover plate of the non-magnetic shell 4 through the flange.
- the flange is provided with an O-ring to ensure the sealing of the non-magnetic shell.
- One side of the prestressed screw 3 is in contact with the giant magnetostrictive element 2, the other side of the prestressed screw 3 is connected to a pressure pump through a pipeline, and the pressure is applied to the prestressed screw 3 by the pressure pump, so that the prestressed The screw 3 moves to the left, and then applies prestress to the giant magnetostrictive element 2 through the prestress screw 3, and the size of the prestress can be controlled by adjusting the pump pressure of the pressure pump.
- the prestress display instrument 15 is connected to the prestress screw 3 for displaying the magnitude of the prestress applied by the pressure pump.
- the prestressing indicator 15 is connected to the prestressing screw 3 through a pipeline.
- the temperature control assembly includes a heating device 10 for providing an adjustable temperature field for the giant magnetostrictive material element; the temperature control assembly also includes a temperature measuring device 8 for detecting the temperature inside the non-magnetic shell.
- the heating device 10 is externally connected to a 220V AC power source to realize temperature regulation inside the sealed non-magnetic shell 4 .
- the temperature measuring device 8 is a temperature sensor, and the temperature sensor is sealed and installed on the non-magnetic shell 4; the temperature sensor is connected to the wire connector 11 through a wire inside the non-magnetic shell 4, and the wire
- the connector 11 is externally connected with a temperature display instrument to realize real-time display of the internal temperature of the non-magnetic shell 4 .
- the pressure control assembly includes a pressurizing device 9, which is used to provide an adjustable pressure field for the giant magnetostrictive material element; the pressurizing device includes a pressure pump, and the inside of the sealed non-magnetic shell 4 is realized by adjusting the pump pressure pressure regulation.
- the pressure pump is connected to the non-magnetic shell 4 through a pipeline, and the pressure pump applies pressure to the inside of the non-magnetic shell 4 to adjust the pressure inside the high-temperature and high-pressure container.
- the pressure control assembly also includes a pressure display instrument 14 , which is connected to the pressurizing device, and the pressure display instrument 14 displays the pressure inside the sealed non-magnetic shell 4 .
- the temperature control component and the pressure control component are used to provide different temperature fields and different pressure fields in the high-temperature and high-pressure container constituted by the non-magnetic shell 4 .
- Described magnetic parameter detecting device comprises strain gauge sensor 6 and magnetic field sensor 7; Described strain gauge sensor 6 is installed on the side of giant magnetostrictive element 2, is used for detecting the amount of deformation of giant magnetostrictive element 2; The magnetic field The sensor 7 is installed between the giant magnetostrictive element 2 and the prestressed screw 3 for measuring the surface magnetic field intensity of the giant magnetostrictive element 2 .
- the magnetic field sensor 7 has an automatic temperature correction function.
- the magnetic parameter detection device is used to detect the deformation amount of the giant magnetostrictive element and the magnetic field intensity on the surface of the giant magnetostrictive element, and the detection signal is connected to the corresponding measuring instrument through the wire connector 11 .
- a certain temperature field and pressure field are provided for the giant magnetostrictive material through the temperature control system and the pressure regulation system, and then the prestress applying component is adjusted to apply different bias prestress to the giant magnetostrictive element, Change the current in the drive coil to generate an external magnetic field so that the giant magnetostrictive element in the magnetic field undergoes stretching strain, and the deformation of the giant magnetostrictive element and the magnetic field strength generated on the surface of the giant magnetostrictive element are respectively measured through the detection component.
- the magnetization B-H curve and the magnetostriction S-H curve (the curve between the strain of the rod and the applied magnetic field) of the magnetostrictive material are measured.
- the strain gauge sensor used to detect the deformation of the giant magnetostrictive element is a resistive strain gauge
- the magnetic field sensor used to detect the intensity of the magnetic field generated on the surface of the giant magnetostrictive element is a Hall chip.
- the resistance strain gauge is pasted on the side of the cylindrical rod-type giant magnetostrictive element
- the Hall chip is located on the end face of the giant magnetostrictive element, and is used to measure the surface magnetic field after magnetization of the giant magnetostrictive material.
- the strain gauge pasted on the surface of the giant magnetostrictive element can measure the amount of deformation of the giant magnetostrictive element
- the prestress application component displays the applied bias stress through the pressure gauge
- the Hall chip can Measure the magnetic field intensity generated on the surface of the giant magnetostrictive element.
- the invention also discloses a method for measuring the magnetic parameters of the giant magnetostrictive material.
- the giant magnetostrictive material under the action of different bias prestresses can be realized. Detection of magnetostrictive properties changing with temperature and pressure.
- a method for measuring the magnetic parameters of giant magnetostrictive materials comprising the following steps:
- Step 1 adjusting the magnitude of the applied bias stress through the stress applying component
- Step 2 keep the temperature field and pressure field constant
- Step 3 Supply direct current to the coil assembly to make it generate a stable magnetic field, and the giant magnetostrictive element will stretch and deform when a certain magnetic field strength is applied;
- Step 4 measure the magnetostrictive strain through the strain gauge installed on the side of the giant magnetostrictive element
- Step 5 Keep the pressure field constant, change the temperature field, repeat the above steps 1 to 4 in turn, and measure the variation law of the magnetostriction curve with the temperature field;
- Step 6 Keep the temperature field constant, adjust the pressure field, repeat the above steps 1 to 4 in turn, and measure the change rule of the magnetostriction curve with the pressure field.
- the invention also discloses a method for measuring the magnetic parameters of the giant magnetostrictive material.
- the giant magnetostrictive material under the action of different bias prestresses can be realized. Detection of magnetostrictive properties changing with temperature field and pressure field.
- a method for measuring the magnetic parameters of giant magnetostrictive materials comprising the following steps:
- Step 1 adjusting the magnitude of the applied bias stress through the stress applying component
- Step 2 keep the temperature field and pressure field constant
- Step 3 Supply DC power to the coil assembly to generate a stable magnetic field, and the giant magnetostrictive element is magnetized in the external magnetic field;
- Step 4 measuring the surface magnetic field of the giant magnetostrictive material through a Hall element installed on the end face of the giant magnetostrictive element;
- Step 5 Adjust the current and change the external magnetic field
- Step 6 Keep the pressure field constant, change the temperature field, repeat the above steps 1 to 5 in turn, and measure the variation law of the magnetization curve with the temperature field;
- Step 7 Keep the temperature field constant, adjust the pressure field, and repeat the above steps 1 to 5 in turn, and the change law of the magnetization curve with the pressure field can be measured.
- the present invention can test giant magnetostrictive smart materials, such as iron gallium alloy Galfenol, giant magnetostrictive material Terfenol-D, magnetostrictive shape memory alloy, under different bias stresses etc., measured the variation curves of its magnetic parameters with the temperature field and pressure field, including the relationship between the B-H curve and temperature and pressure (the curve between the magnetic induction of the rod and the applied magnetic field), and the relationship between the S-H curve and temperature and pressure.
- giant magnetostrictive smart materials such as iron gallium alloy Galfenol, giant magnetostrictive material Terfenol-D, magnetostrictive shape memory alloy, under different bias stresses etc.
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Abstract
A device and method for measuring a magnetic parameter of a giant magnetostrictive material. The measurement device comprises an outer magnetic field assembly; the outer magnetic field assembly comprises two magnetic poles (1), and a non-magnetically-conductive pressure container assembly is disposed between the two magnetic poles (1); the non-magnetically-conductive pressure container assembly comprises a sealed non-magnetically-conductive housing (4), constituting a high-temperature and high-pressure container; a giant magnetostrictive element (2) is placed inside the container; a pre-stress application assembly, a temperature control assembly and a pressure control assembly are mounted on the non-magnetically-conductive housing (4), and are respectively used for adjusting pre-stressing force exerted on the giant magnetostrictive element (2), and the temperature and pressure in the high-temperature and high-pressure container; a magnetic parameter detection assembly is mounted on the giant magnetostrictive element (2); the deformation quantity and the surface magnetic field intensity of the giant magnetostrictive element (2) under different external magnetic fields, pre-stressing force, temperatures and pressures are measured, and the measurement for a magnetic parameter of a giant magnetostrictive material having a continuous and adjustable external magnetic field, adjustable bias pre-stressing force, an adjustable temperature field and an adjustable pressure field is realized.
Description
本发明涉及磁测量技术领域,尤其涉及一种超磁致伸缩材料磁学参数的测量装置及测量方法。The invention relates to the technical field of magnetic measurement, in particular to a measuring device and a measuring method for the magnetic parameters of giant magnetostrictive materials.
超磁致伸缩材料(GMM)是一类具有磁致伸缩特性的材料,自超磁致伸缩材料出现以来,以其磁场下较大的磁致伸缩应变得到广泛关注。超磁致伸缩材料(GMM)在工程上具有将电能转换成机械能或将机械能转换成电能的特性,研究人员利用其磁—力转化原理,研制出了磁控执行器、磁场传感器、能量转换等高精度、高能量密度元器件。Giant magnetostrictive materials (GMM) are a class of materials with magnetostrictive properties. Since the emergence of giant magnetostrictive materials, they have attracted widespread attention due to their large magnetostrictive strain under a magnetic field. Giant magnetostrictive materials (GMM) have the characteristics of converting electrical energy into mechanical energy or converting mechanical energy into electrical energy in engineering. Researchers have developed magnetic control actuators, magnetic field sensors, energy conversion, etc. by using its magnetic-force conversion principle. High precision, high energy density components.
超磁致伸缩材料的工作特性为:在交变磁场的作用下,材料产生与交变磁场频率相同的机械振动,因其具有优于压电陶瓷PZT的性能被广泛应用于制作低频大功率换能器。例如,在随钻测量数据声波遥传技术的开发过程中,产生沿钻柱传播的低频弹性载波就需要利用超磁致伸缩材料换能器来激发。The working characteristics of giant magnetostrictive materials are: under the action of alternating magnetic field, the material produces mechanical vibration at the same frequency as the alternating magnetic field. energy device. For example, in the development process of acoustic wave remote transmission technology for measurement while drilling, the generation of low-frequency elastic carrier waves propagating along the drill string requires the use of giant magnetostrictive material transducers to excite.
常温常压下,超磁致伸缩材料的力学、磁学特性非常优越,为了实现超磁致伸缩材料在不同应用场景中的应用,因而需要更好的掌握超磁致伸缩材料换能器在温度场及压力场下的工作性能,而这必须对换能器设计过程中有关超磁致伸缩材料的磁学参数与温度场、压力场之间的关系进行实验测量。因此设计一种外磁场连续可调、偏置预应力可调、温度场可调、压力场可调的超磁致伸缩材料磁学参数测量装置及测量方法,对于研究磁致伸缩材料的磁学特性以及随钻数据声波遥传技术的开发都十分重要。Under normal temperature and pressure, the mechanical and magnetic properties of giant magnetostrictive materials are very superior. In order to realize the application of giant magnetostrictive materials in different application scenarios, it is necessary to better grasp the temperature of giant magnetostrictive material transducers. field and pressure field, and this must be experimentally measured on the relationship between the magnetic parameters of the giant magnetostrictive material and the temperature field and pressure field in the process of transducer design. Therefore, a device and method for measuring the magnetic parameters of giant magnetostrictive materials with continuously adjustable external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field is designed, which is useful for studying the magnetism of magnetostrictive materials. The characteristics and the development of acoustic telemetry technology for data while drilling are very important.
发明内容Contents of the invention
为解决上述问题,本发明提供了一种超磁致伸缩材料磁学参数的测量 装置及测量方法,能够实现外磁场连续可调、偏置预应力可调、温度场可调、压力场可调的超磁致伸缩材料磁学参数测量,能够测得超磁致伸缩材料在不同偏置预应力的作用下超磁致伸缩材料磁学参数随温度、压力的变化规律。In order to solve the above problems, the present invention provides a measuring device and measuring method for the magnetic parameters of giant magnetostrictive materials, which can realize continuous adjustment of the external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field The measurement of the magnetic parameters of the giant magnetostrictive material can measure the change law of the magnetic parameter of the giant magnetostrictive material with temperature and pressure under the action of different bias prestress.
为了实现上述的目的,本发明提供了如下的技术方案:In order to achieve the above object, the present invention provides the following technical solutions:
一种超磁致伸缩材料磁学参数的测量装置,包括:外磁场组件、不导磁压力容器组件、预应力施加组件、磁学参数检测组件、温度控制组件、压力控制组件和超磁致伸缩元件;A device for measuring magnetic parameters of giant magnetostrictive materials, comprising: an external magnetic field component, a non-magnetic pressure vessel component, a prestress application component, a magnetic parameter detection component, a temperature control component, a pressure control component and a giant magnetostrictive element;
所述外磁场组件包括两个磁极,两个磁极之间设有不导磁压力容器组件,所述不导磁压力容器组件包括不导磁外壳,所述不导磁外壳密封,构成高温高压容器,容器内部放置所述超磁致伸缩元件;The external magnetic field assembly includes two magnetic poles, and a non-magnetic pressure vessel assembly is arranged between the two magnetic poles. The non-magnetic pressure container assembly includes a non-magnetic shell, and the non-magnetic shell is sealed to form a high-temperature and high-pressure container. , placing the giant magnetostrictive element inside the container;
所述不导磁外壳上安装预应力施加组件、温度控制组件和压力控制组件,所述预应力施加组件与所述超磁致伸缩元件接触,调节施加在所述超磁致伸缩元件上的预应力;所述温度控制组件和所述压力控制组件分别用于调节高温高压容器内的温度和压力;A prestress application assembly, a temperature control assembly and a pressure control assembly are installed on the non-magnetic shell, and the prestress application assembly is in contact with the giant magnetostrictive element to adjust the prestress applied to the giant magnetostrictive element. Stress; the temperature control assembly and the pressure control assembly are respectively used to adjust the temperature and pressure in the high temperature and high pressure container;
所述磁学参数检测组件安装在所述超磁致伸缩元件上,用于检测所述超磁致伸缩元件在不同外磁场、预应力、温度、压力下的变形量和表面磁场强度。The magnetic parameter detection component is installed on the giant magnetostrictive element, and is used to detect the deformation amount and surface magnetic field strength of the giant magnetostrictive element under different external magnetic fields, prestress, temperature, and pressure.
进一步的技术方案,所述外磁场组件还包括恒流源、线圈和磁极间距调节组件,通过所述恒流源向所述线圈供电,产生外加磁场。In a further technical solution, the external magnetic field component further includes a constant current source, a coil, and a magnetic pole spacing adjustment component, and the constant current source supplies power to the coil to generate an external magnetic field.
进一步的技术方案,所述超磁致伸缩元件在所述外磁场作用下发生磁致伸缩。In a further technical solution, the giant magnetostrictive element undergoes magnetostriction under the action of the external magnetic field.
进一步的技术方案,所述外磁场组件通过改变恒流源输入线圈的电流的大小以及通过磁极间距调节组件调节磁极之间的距离,实现外磁场大小的精确调节。In a further technical solution, the external magnetic field assembly realizes the precise adjustment of the external magnetic field by changing the magnitude of the current input to the coil by the constant current source and adjusting the distance between the magnetic poles through the magnetic pole spacing adjustment assembly.
进一步的技术方案,所述不导磁压力容器组件还包括不导磁样品支架, 所述不导磁样品支架固定在所述不导磁外壳的内部,用于承托所述磁学参数检测组件以及所述超磁致伸缩元件。In a further technical solution, the non-magnetic pressure vessel assembly further includes a non-magnetic sample holder, and the non-magnetic sample holder is fixed inside the non-magnetic shell for supporting the magnetic parameter detection assembly And the giant magnetostrictive element.
进一步的技术方案,所述预应力施加组件包括预应力螺杆和预应力显示仪表,通过泵压调节预应力大小,用于给超磁致伸缩元件提供数值大小可调的偏置预应力。In a further technical solution, the prestressing assembly includes a prestressing screw and a prestressing display instrument, and the size of the prestress is adjusted by pump pressure, so as to provide the giant magnetostrictive element with an adjustable bias prestress.
进一步的技术方案,所述温度控制组件包括加热装置,用于给超磁致伸缩材料元件提供温度可调的温度场。In a further technical solution, the temperature control assembly includes a heating device for providing an adjustable temperature field for the giant magnetostrictive material element.
进一步的技术方案,所述压力控制组件包括加压装置,用于给磁致伸缩材料元件提供压力大小可调的压力场。In a further technical solution, the pressure control assembly includes a pressurizing device for providing an adjustable pressure field to the magnetostrictive material element.
进一步的技术方案,所述磁学参数检测装置包括应变片传感器和磁场传感器;所述应变片传感器安装在超磁致伸缩元件的侧面,用于检测超磁致伸缩元件的变形量;所述磁场传感器安装在超磁致伸缩元件和预应力螺杆之间,用于测量超磁致伸缩元件表面磁场强度。In a further technical solution, the magnetic parameter detection device includes a strain gauge sensor and a magnetic field sensor; the strain gauge sensor is installed on the side of the giant magnetostrictive element for detecting the deformation of the giant magnetostrictive element; the magnetic field The sensor is installed between the giant magnetostrictive element and the prestressed screw rod, and is used for measuring the surface magnetic field intensity of the giant magnetostrictive element.
本发明还公开了一种超磁致伸缩材料磁学参数的测量方法,在上述超磁致伸缩材料磁学参数的测量装置的基础上实现,该方法包括如下步骤:The present invention also discloses a method for measuring the magnetic parameters of giant magnetostrictive materials, which is implemented on the basis of the above-mentioned measuring device for magnetic parameters of giant magnetostrictive materials. The method includes the following steps:
步骤1:通过预应力施加组件,调节泵压大小来调节施加在超磁致伸缩材料上的预应力大小,并通过预应力及压力显示仪表显示预应力的大小;Step 1: Adjust the pump pressure to adjust the prestress applied to the giant magnetostrictive material through the prestress applying component, and display the prestress through the prestress and pressure display instrument;
步骤2:利用恒流源给外磁场组件供应直流电,使其产生外磁场,给超磁致伸缩元件施加一定的磁场强度而使超磁致伸缩元件发生伸缩变形,记录此时的外磁场B;Step 2: Use a constant current source to supply direct current to the external magnetic field component to make it generate an external magnetic field, apply a certain magnetic field strength to the giant magnetostrictive element to make the giant magnetostrictive element stretch and deform, and record the external magnetic field B at this time;
步骤3:通过安装在磁致伸缩材料表面的磁场传感器测得超磁致伸缩元件表面的磁感应强度H;Step 3: Measure the magnetic induction intensity H on the surface of the giant magnetostrictive element through a magnetic field sensor installed on the surface of the magnetostrictive material;
步骤4:将安装在超磁致伸缩元件侧面的应变片传感器连接到应变仪上,通过应变片传感器测得超磁致伸缩元件的变形量;Step 4: Connect the strain gauge sensor installed on the side of the giant magnetostrictive element to the strain gauge, and measure the deformation of the giant magnetostrictive element through the strain gauge sensor;
步骤5:分别记录上述测得的偏置应力大小、外磁场B、超磁致伸缩元件表面磁场强度H以及应变仪上测得的数据;Step 5: Record the above-mentioned measured bias stress, external magnetic field B, surface magnetic field strength H of the giant magnetostrictive element, and the data measured on the strain gauge;
步骤6:改变直流电的电流大小,依次重复步上述步骤1至步骤5。Step 6: Change the current magnitude of the direct current, and repeat the above steps 1 to 5 in sequence.
与现有技术相比,本发明所述技术方案存在以下有益效果:Compared with the prior art, the technical solution of the present invention has the following beneficial effects:
本发明提供了一种超磁致伸缩材料磁学参数的温度特性、压力特性测试装置,该装置具有外磁场连续可调、偏置预应力可调、温度场可调、压力场可调的优点,能够测得超磁致伸缩材料在不同偏置预应力的作用下超磁致伸缩材料磁学参数随温度、压力的变化规律。The invention provides a temperature characteristic and pressure characteristic test device for the magnetic parameters of giant magnetostrictive materials. The device has the advantages of continuously adjustable external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field. , can measure giant magnetostrictive material under the action of different bias prestressing magnetic parameters of giant magnetostrictive material change law with temperature and pressure.
本发明能够实现在不同的偏置应力作用下,测试超磁致伸缩类智能材料的磁学参数随温度场、压力场的变化曲线,其中包括B-H曲线与温度和压力的关系、S-H曲线与温度和压力的关系;在一定的偏置磁场下,施加不同应力,测得磁致伸缩材料棒的磁感应强度,得到B-T曲线与温度和压力的关系。The invention can realize the change curve of the magnetic parameters of the giant magnetostrictive smart material with the temperature field and the pressure field under different bias stresses, including the relationship between the B-H curve and temperature and pressure, and the relationship between the S-H curve and the temperature The relationship between pressure and pressure; under a certain bias magnetic field, different stresses are applied to measure the magnetic induction of the magnetostrictive material rod, and the relationship between the B-T curve and temperature and pressure is obtained.
构成本发明的一部分的说明书附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention.
图1为本发明实施例一中超磁致伸缩材料磁学参数测量装置的结构示意图。FIG. 1 is a schematic structural diagram of a device for measuring magnetic parameters of giant magnetostrictive materials in Embodiment 1 of the present invention.
其中,1磁极,2超磁致伸缩元件,3预应力螺杆,4不导磁外壳,5不导磁样品支架,6应变片传感器,7磁场传感器,8测温装置,9加压装置,10加热装置,11导线连接器,12恒流源,13线圈,14压力显示仪表,15预应力显示仪表,16磁极间距调节组件。Among them, 1 magnetic pole, 2 giant magnetostrictive element, 3 prestressed screw, 4 non-magnetic shell, 5 non-magnetic sample holder, 6 strain gauge sensor, 7 magnetic field sensor, 8 temperature measuring device, 9 pressurizing device, 10 Heating device, 11 wire connector, 12 constant current source, 13 coil, 14 pressure display instrument, 15 prestress display instrument, 16 magnetic pole spacing adjustment component.
下面结合附图与实施例对本公开作进一步说明。The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.
应该指出,以下详细说明都是例示性的,旨在对本公开提供进一步的说明。除非另有指明,本公开使用的所有技术和科学术语具有与本公开所属技术领域的普通技术人员通常理解的相同含义。It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
需要注意的是,这里所使用的术语仅是为了描述具体实施方式,而非意图限制根据本申请的示例性实施方式。如在这里所使用的,除非上下文另外明确指出,否则单数形式也意图包括复数形式,此外,还应当理解的是,当在本说明书中使用术语“包含”和/或“包括”时,其指明存在特征、步骤、操作、器件、组件和/或它们的组合。It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.
实施例一Embodiment one
本发明公开了一种超磁致伸缩材料磁学参数的测量装置,该装置具有外磁场连续可调、偏置预应力可调、温度场可调、压力场可调的优点,可以测得超磁致伸缩材料在不同偏置预应力的作用下超磁致伸缩材料磁学参数随温度、压力的变化规律。The invention discloses a device for measuring magnetic parameters of giant magnetostrictive materials. The device has the advantages of continuously adjustable external magnetic field, adjustable bias prestress, adjustable temperature field, and adjustable pressure field, and can measure super Variation of magnetic parameters of giant magnetostrictive materials with temperature and pressure under different bias prestress.
图1是本发明的一种超磁致伸缩材料磁学参数的测量装置的结构示意图。如图1所示,本实施例公开了一种超磁致伸缩材料磁学参数的测量装置,包括:外磁场组件、不导磁压力容器组件、预应力施加组件、磁学参数检测组件、温度控制组件、压力控制组件和超磁致伸缩元件。Fig. 1 is a structural schematic diagram of a measuring device for magnetic parameters of a giant magnetostrictive material according to the present invention. As shown in Figure 1, this embodiment discloses a device for measuring the magnetic parameters of giant magnetostrictive materials, including: an external magnetic field assembly, a non-magnetic pressure vessel assembly, a prestress application assembly, a magnetic parameter detection assembly, a temperature Control components, pressure control components and giant magnetostrictive elements.
所述外磁场组件包括两个磁极1,两个磁极1之间设有不导磁压力容器组件,所述不导磁压力容器组件包括不导磁外壳4,所述不导磁外壳4密封,构成高温高压容器,维持实验所需压力及温度,同时减小容器材料对样品中磁场的影响,该容器内部放置所述超磁致伸缩元件2。The external magnetic field assembly includes two magnetic poles 1, a non-magnetic pressure vessel assembly is arranged between the two magnetic poles 1, the non-magnetic pressure vessel assembly includes a non-magnetic shell 4, and the non-magnetic shell 4 is sealed, A high-temperature and high-pressure container is formed to maintain the pressure and temperature required for the experiment while reducing the influence of the container material on the magnetic field in the sample. The giant magnetostrictive element 2 is placed inside the container.
所述不导磁外壳4上安装预应力施加组件、温度控制组件和压力控制组件,所述预应力施加组件与所述超磁致伸缩元件2接触,调节施加在所述超磁致伸缩元件2上的预应力;所述温度控制组件和所述压力控制组件分别用于调节高温高压容器内的温度和压力。A prestressing assembly, a temperature control assembly and a pressure control assembly are installed on the non-magnetic shell 4, and the prestressing assembly is in contact with the giant magnetostrictive element 2, and the adjustment is applied to the giant magnetostrictive element 2. The prestress on the upper; the temperature control assembly and the pressure control assembly are used to adjust the temperature and pressure in the high-temperature and high-pressure container respectively.
所述磁学参数检测组件安装在所述超磁致伸缩元件2上,用于检测所述超磁致伸缩元件在不同外磁场、预应力、温度、压力下的变形量和表面磁场强度。The magnetic parameter detection component is installed on the giant magnetostrictive element 2, and is used to detect the deformation and surface magnetic field strength of the giant magnetostrictive element under different external magnetic fields, prestress, temperature, and pressure.
所述外磁场组件还包括恒流源12、线圈13和磁极间距调节组件16, 通过所述恒流源12向所述线圈13供电,产生外加磁场。The external magnetic field component also includes a constant current source 12 , a coil 13 and a magnetic pole spacing adjustment component 16 , and the coil 13 is powered by the constant current source 12 to generate an external magnetic field.
在本实施例中,所述线圈13分别缠绕在所述两个磁极1上,所述恒流源12向线圈13供电,产生外加磁场。In this embodiment, the coils 13 are respectively wound on the two magnetic poles 1 , and the constant current source 12 supplies power to the coils 13 to generate an external magnetic field.
所述磁极间距调节组件16包括旋钮,所述旋钮安装在磁极1的一端,通过转动旋钮实现两个磁极1之间距离的调节。The magnetic pole spacing adjustment assembly 16 includes a knob, which is installed at one end of the magnetic pole 1, and the distance between the two magnetic poles 1 can be adjusted by turning the knob.
所述外磁场组件通过改变恒流源12输入线圈13的电流的大小,实现外磁场大小的精确调节。The external magnetic field component realizes precise adjustment of the external magnetic field by changing the magnitude of the current input from the constant current source 12 to the coil 13 .
进一步的,所述外磁场组件通过改变恒流源12输入线圈13的电流的大小,以及通过磁极间距调节组件16调节磁极之间的距离,实现外磁场大小的精确调节。Further, the external magnetic field assembly realizes precise adjustment of the external magnetic field by changing the magnitude of the current input by the constant current source 12 to the coil 13 and by adjusting the distance between the magnetic poles through the magnetic pole spacing adjustment assembly 16 .
所述超磁致伸缩元件2在所述外磁场作用下发生磁致伸缩。The giant magnetostrictive element 2 undergoes magnetostriction under the action of the external magnetic field.
所述不导磁压力容器组件还包括不导磁样品支架5,所述不导磁样品支架5固定在所述不导磁外壳4的内部,用于承托磁学参数检测组件以及超磁致伸缩元件2。The non-magnetic pressure vessel assembly also includes a non-magnetic sample holder 5, which is fixed inside the non-magnetic shell 4 for supporting the magnetic parameter detection component and the supermagnetic Telescopic element 2.
所述不导磁外壳4的一端开口,便于安装或卸载超磁致伸缩元件实验样品、磁场传感器和应变片传感器,通过将盖板固定在不导磁外壳的开口端,实现密封。One end opening of the non-magnetic shell 4 is convenient for installing or unloading giant magnetostrictive element experimental samples, magnetic field sensors and strain gauge sensors, and sealing is realized by fixing the cover plate on the open end of the non-magnetic shell 4 .
所述不导磁外壳4的侧面上密封安装导线连接器11,便于将不导磁外壳4内部的传感器信号及测量信号引出。 Wire connectors 11 are hermetically installed on the side of the non-magnetic shell 4 to facilitate the extraction of sensor signals and measurement signals inside the non-magnetic shell 4 .
所述预应力施加组件包括预应力螺杆3和预应力显示仪表15,通过泵压调节预应力大小,用于给超磁致伸缩元件提供数值大小可调的偏置预应力。所述超磁致伸缩元件位于驱动线圈组件中,即,所述超磁致伸缩元件位于外磁场中,且在偏置预应力作用下沿着支架发生轴向磁致伸缩应变。The prestressing assembly includes a prestressing screw 3 and a prestressing display instrument 15, which can adjust the size of the prestress by pump pressure, and is used to provide the giant magnetostrictive element with an adjustable bias prestress. The giant magnetostrictive element is located in the driving coil assembly, that is, the giant magnetostrictive element is located in an external magnetic field, and under the action of bias prestress, axial magnetostrictive strain occurs along the bracket.
在本实施例中,所述预应力螺杆3穿过法兰固定在不导磁壳体4的盖板上。优选的,所述法兰设有O型密封圈,保证不导磁外壳的密封。In this embodiment, the prestressed screw 3 is fixed on the cover plate of the non-magnetic shell 4 through the flange. Preferably, the flange is provided with an O-ring to ensure the sealing of the non-magnetic shell.
所述预应力螺杆3一侧与所述超磁致伸缩元件2接触,所述预应力螺 杆3的另一侧通过管线连接压力泵,通过压力泵施加压力到预应力螺杆3上,使得预应力螺杆3向左移动,进而通过预应力螺杆3对超磁致伸缩元件2施加预应力,所述预应力的大小可通过调节压力泵的泵压进行控制。One side of the prestressed screw 3 is in contact with the giant magnetostrictive element 2, the other side of the prestressed screw 3 is connected to a pressure pump through a pipeline, and the pressure is applied to the prestressed screw 3 by the pressure pump, so that the prestressed The screw 3 moves to the left, and then applies prestress to the giant magnetostrictive element 2 through the prestress screw 3, and the size of the prestress can be controlled by adjusting the pump pressure of the pressure pump.
所述预应力显示仪表15和所述预应力螺杆3连接,用于显示压力泵施加的预应力大小。在本实施例中,所述预应力显示仪表15通过管线连接所述预应力螺杆3。The prestress display instrument 15 is connected to the prestress screw 3 for displaying the magnitude of the prestress applied by the pressure pump. In this embodiment, the prestressing indicator 15 is connected to the prestressing screw 3 through a pipeline.
所述温度控制组件包括加热装置10,用于给超磁致伸缩材料元件提供温度可调的温度场;所述温度控制组件还包括测温装置8,用于检测不导磁外壳内部的温度。The temperature control assembly includes a heating device 10 for providing an adjustable temperature field for the giant magnetostrictive material element; the temperature control assembly also includes a temperature measuring device 8 for detecting the temperature inside the non-magnetic shell.
在本实施例中,所述加热装置10外接220V交流电源,实现密封的不导磁外壳4内部的温度调节。In this embodiment, the heating device 10 is externally connected to a 220V AC power source to realize temperature regulation inside the sealed non-magnetic shell 4 .
所述测温装置8为温度传感器,所述温度传感器密封安装在不导磁外壳4上;所述温度传感器在不导磁外壳4的内部通过导线与所述导线连接器11连接,所述导线连接器11外接温度显示仪,实现不导磁外壳4内部温度的实时显示。The temperature measuring device 8 is a temperature sensor, and the temperature sensor is sealed and installed on the non-magnetic shell 4; the temperature sensor is connected to the wire connector 11 through a wire inside the non-magnetic shell 4, and the wire The connector 11 is externally connected with a temperature display instrument to realize real-time display of the internal temperature of the non-magnetic shell 4 .
所述压力控制组件包括加压装置9,用于给超磁致伸缩材料元件提供压力可调的压力场;所述加压装置包括压力泵,通过调节泵压实现密封的不导磁外壳4内部的压力调节。The pressure control assembly includes a pressurizing device 9, which is used to provide an adjustable pressure field for the giant magnetostrictive material element; the pressurizing device includes a pressure pump, and the inside of the sealed non-magnetic shell 4 is realized by adjusting the pump pressure pressure regulation.
在本实施例中,所述压力泵通过管线连接不导磁外壳4,通过压力泵施加压力到不导磁外壳4的内部,调节高温高压容器内部的压力。In this embodiment, the pressure pump is connected to the non-magnetic shell 4 through a pipeline, and the pressure pump applies pressure to the inside of the non-magnetic shell 4 to adjust the pressure inside the high-temperature and high-pressure container.
所述压力控制组件还包括压力显示仪表14,所述压力显示仪表14与所述加压装置连接,通过压力显示仪表14显示密封的不导磁外壳4内部的压力大小。The pressure control assembly also includes a pressure display instrument 14 , which is connected to the pressurizing device, and the pressure display instrument 14 displays the pressure inside the sealed non-magnetic shell 4 .
在本实施例中,通过在不导磁外壳4构成的高温高压容器中,利用所述温度控制组件和所述压力控制组件提供不同温度场和不同压力场。In this embodiment, the temperature control component and the pressure control component are used to provide different temperature fields and different pressure fields in the high-temperature and high-pressure container constituted by the non-magnetic shell 4 .
所述磁学参数检测装置包括应变片传感器6和磁场传感器7;所述应变 片传感器6安装在超磁致伸缩元件2的侧面,用于检测超磁致伸缩元件2的变形量;所述磁场传感器7安装在超磁致伸缩元件2和预应力螺杆3之间,用于测量超磁致伸缩元件2表面磁场强度。Described magnetic parameter detecting device comprises strain gauge sensor 6 and magnetic field sensor 7; Described strain gauge sensor 6 is installed on the side of giant magnetostrictive element 2, is used for detecting the amount of deformation of giant magnetostrictive element 2; The magnetic field The sensor 7 is installed between the giant magnetostrictive element 2 and the prestressed screw 3 for measuring the surface magnetic field intensity of the giant magnetostrictive element 2 .
优选的,所述磁场传感器7具有自动温度修正功能。Preferably, the magnetic field sensor 7 has an automatic temperature correction function.
所述磁学参数检测装置,用于检测超磁致伸缩元件的变形量和超磁致伸缩元件表面的磁场强度,检测信号通过导线连接器11连接相应的测量仪表。The magnetic parameter detection device is used to detect the deformation amount of the giant magnetostrictive element and the magnetic field intensity on the surface of the giant magnetostrictive element, and the detection signal is connected to the corresponding measuring instrument through the wire connector 11 .
在本实施例中,通过温度控制系统和压力调节系统,为超磁致伸缩材料提供一定的温度场和压力场,然后调节预应力施加组件给超磁致伸缩元件施加不同的偏置预应力,改变驱动线圈中电流,产生外磁场使得位于该磁场中的超磁致伸缩元件发生伸缩应变,通过检测组件分别测得超磁致伸缩远的变形量和超磁致伸缩元件表面产生的磁场强度,从而测得磁致伸缩材料的磁化B-H曲线及磁致伸缩S-H曲线(棒的应变与施加磁场之间的曲线)。In this embodiment, a certain temperature field and pressure field are provided for the giant magnetostrictive material through the temperature control system and the pressure regulation system, and then the prestress applying component is adjusted to apply different bias prestress to the giant magnetostrictive element, Change the current in the drive coil to generate an external magnetic field so that the giant magnetostrictive element in the magnetic field undergoes stretching strain, and the deformation of the giant magnetostrictive element and the magnetic field strength generated on the surface of the giant magnetostrictive element are respectively measured through the detection component. Thus the magnetization B-H curve and the magnetostriction S-H curve (the curve between the strain of the rod and the applied magnetic field) of the magnetostrictive material are measured.
在本实施例中,用于检测超磁致伸缩元件变形量的应变片传感器为电阻型应变片,用于检测超磁致伸缩元件表面产生的磁场强度的磁场传感器为霍尔芯片。所述电阻型应变片粘贴在圆柱棒型超磁致伸缩元件的侧面,所述霍尔芯片位于超磁致伸缩元件端面,用于测量超磁致伸缩材料磁化后表面磁场。In this embodiment, the strain gauge sensor used to detect the deformation of the giant magnetostrictive element is a resistive strain gauge, and the magnetic field sensor used to detect the intensity of the magnetic field generated on the surface of the giant magnetostrictive element is a Hall chip. The resistance strain gauge is pasted on the side of the cylindrical rod-type giant magnetostrictive element, and the Hall chip is located on the end face of the giant magnetostrictive element, and is used to measure the surface magnetic field after magnetization of the giant magnetostrictive material.
在本实施例中,粘贴在超磁致伸缩元件表面的应变片可以测得超磁致伸缩元件的变形量,预应力施加组件通过压力表显示所施加的偏置应力大小,霍尔芯片则能测得超磁致伸缩元件表面产生的磁场强度。通过上述装置,可以对超磁致伸缩元件进行静态测量,即在一定的偏置磁场下,施加不同应力,测得不同温度、不同压力下磁致伸缩材料棒的磁感应强度,得到一定温度、压力下的磁感应强度与施加应力、磁致伸缩之间的曲线。In this embodiment, the strain gauge pasted on the surface of the giant magnetostrictive element can measure the amount of deformation of the giant magnetostrictive element, the prestress application component displays the applied bias stress through the pressure gauge, and the Hall chip can Measure the magnetic field intensity generated on the surface of the giant magnetostrictive element. Through the above device, the giant magnetostrictive element can be statically measured, that is, under a certain bias magnetic field, different stresses are applied, and the magnetic induction intensity of the magnetostrictive material rod at different temperatures and pressures is measured, and a certain temperature and pressure are obtained. The curve between the magnetic induction intensity, the applied stress and the magnetostriction.
实施例二Embodiment two
本发明还公开了一种超磁致伸缩材料磁学参数的测量方法,在上述超磁致伸缩材料磁学参数的测量装置的基础上,实现不同偏置预应力作用下的超磁致伸缩材料磁致伸缩特性随温度、压力变化规律的检测。The invention also discloses a method for measuring the magnetic parameters of the giant magnetostrictive material. On the basis of the above-mentioned measuring device for the magnetic parameter of the giant magnetostrictive material, the giant magnetostrictive material under the action of different bias prestresses can be realized. Detection of magnetostrictive properties changing with temperature and pressure.
一种超磁致伸缩材料磁学参数的测量方法,包括以下步骤:A method for measuring the magnetic parameters of giant magnetostrictive materials, comprising the following steps:
步骤1:通过应力施加组件调节施加的偏置应力大小;Step 1: adjusting the magnitude of the applied bias stress through the stress applying component;
步骤2:保持温度场、压力场恒定;Step 2: keep the temperature field and pressure field constant;
步骤3:给线圈组件供应直流电,使其产生稳恒磁场,超磁致伸缩元件在施加了一定的磁场强度而发生伸缩变形;Step 3: Supply direct current to the coil assembly to make it generate a stable magnetic field, and the giant magnetostrictive element will stretch and deform when a certain magnetic field strength is applied;
步骤4:通过安装在超磁致伸缩元件侧面上的应变片测量磁致伸缩应变量;Step 4: measure the magnetostrictive strain through the strain gauge installed on the side of the giant magnetostrictive element;
步骤5:保持压力场恒定,改变温度场,依次重复上述步骤1到步骤4,测量得到磁致伸缩曲线随温度场的变化规律;Step 5: Keep the pressure field constant, change the temperature field, repeat the above steps 1 to 4 in turn, and measure the variation law of the magnetostriction curve with the temperature field;
步骤6:保持温度场恒定,调节压力场,依次重复上述步骤1到步骤4,测量得到磁致伸缩曲线随压力场的变化规律。Step 6: Keep the temperature field constant, adjust the pressure field, repeat the above steps 1 to 4 in turn, and measure the change rule of the magnetostriction curve with the pressure field.
实施例三Embodiment Three
本发明还公开了一种超磁致伸缩材料磁学参数的测量方法,在上述超磁致伸缩材料磁学参数的测量装置的基础上,实现不同偏置预应力作用下的超磁致伸缩材料磁致伸缩特性随温度场、压力场变化规律的检测。The invention also discloses a method for measuring the magnetic parameters of the giant magnetostrictive material. On the basis of the above-mentioned measuring device for the magnetic parameter of the giant magnetostrictive material, the giant magnetostrictive material under the action of different bias prestresses can be realized. Detection of magnetostrictive properties changing with temperature field and pressure field.
一种超磁致伸缩材料磁学参数的测量方法,包括以下步骤:A method for measuring the magnetic parameters of giant magnetostrictive materials, comprising the following steps:
步骤1:通过应力施加组件调节施加的偏置应力大小;Step 1: adjusting the magnitude of the applied bias stress through the stress applying component;
步骤2:保持温度场、压力场恒定;Step 2: keep the temperature field and pressure field constant;
步骤3:给线圈组件供应直流电,使其产生稳恒磁场,超磁致伸缩元件外磁场中被磁化;Step 3: Supply DC power to the coil assembly to generate a stable magnetic field, and the giant magnetostrictive element is magnetized in the external magnetic field;
步骤4:通过安装在超磁致伸缩元件端面上的霍尔元件测量超磁致伸缩材料的表面磁场;Step 4: measuring the surface magnetic field of the giant magnetostrictive material through a Hall element installed on the end face of the giant magnetostrictive element;
步骤5:调节电流大小,改变外磁场;Step 5: Adjust the current and change the external magnetic field;
步骤6:保持压力场恒定,改变温度场,依次重复上述步骤1到步骤5,测量得到磁化曲线随温度场的变化规律;Step 6: Keep the pressure field constant, change the temperature field, repeat the above steps 1 to 5 in turn, and measure the variation law of the magnetization curve with the temperature field;
步骤7:保持温度场恒定,调节压力场,依次重复上述步骤1到步骤5,可测量得到磁化曲线随压力场的变化规律。Step 7: Keep the temperature field constant, adjust the pressure field, and repeat the above steps 1 to 5 in turn, and the change law of the magnetization curve with the pressure field can be measured.
采用上述测量装置和测量方法,本发明可以在不同的偏置应力作用下,测试超磁致伸缩类智能材料,如铁镓合金Galfenol、超磁致伸缩材料Terfenol-D、磁致伸缩形状记忆合金等,测得其磁学参数随温度场、压力场的变化曲线,其中,包括B-H曲线与温度、压力的关系(棒的磁感应强度与施加磁场之间的曲线)、S-H曲线与温度、压力的关系(棒的应变与施加磁场之间的曲线);在一定的偏置磁场下,施加不同应力,测得磁致伸缩材料棒的磁感应强度,得到B-T曲线与温度、压力的关系(磁感应强度与施加应力之间的曲线)。Using the above-mentioned measuring device and measuring method, the present invention can test giant magnetostrictive smart materials, such as iron gallium alloy Galfenol, giant magnetostrictive material Terfenol-D, magnetostrictive shape memory alloy, under different bias stresses etc., measured the variation curves of its magnetic parameters with the temperature field and pressure field, including the relationship between the B-H curve and temperature and pressure (the curve between the magnetic induction of the rod and the applied magnetic field), and the relationship between the S-H curve and temperature and pressure. relationship (the curve between the strain of the rod and the applied magnetic field); under a certain bias magnetic field, different stresses are applied to measure the magnetic induction of the magnetostrictive material rod, and the relationship between the B-T curve and temperature and pressure (the magnetic induction and curves between applied stresses).
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
上述虽然结合附图对本发明的具体实施方式进行了描述,但并非对本发明保护范围的限制,所属领域技术人员应该明白,在本发明的技术方案的基础上,本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围以内。Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.
Claims (10)
- 一种超磁致伸缩材料磁学参数的测量装置,其特征在于,包括:外磁场组件、不导磁压力容器组件、预应力施加组件、磁学参数检测组件、温度控制组件、压力控制组件和超磁致伸缩元件;A device for measuring magnetic parameters of giant magnetostrictive materials, characterized in that it includes: an external magnetic field component, a non-magnetic pressure vessel component, a prestress application component, a magnetic parameter detection component, a temperature control component, a pressure control component and giant magnetostrictive element;所述外磁场组件包括两个磁极,两个磁极之间设有不导磁压力容器组件,所述不导磁压力容器组件包括不导磁外壳,所述不导磁外壳密封,构成高温高压容器,容器内部放置所述超磁致伸缩元件;The external magnetic field assembly includes two magnetic poles, and a non-magnetic pressure vessel assembly is arranged between the two magnetic poles. The non-magnetic pressure container assembly includes a non-magnetic shell, and the non-magnetic shell is sealed to form a high-temperature and high-pressure container. , placing the giant magnetostrictive element inside the container;所述不导磁外壳上安装预应力施加组件、温度控制组件和压力控制组件,所述预应力施加组件与所述超磁致伸缩元件接触,调节施加在所述超磁致伸缩元件上的预应力;所述温度控制组件和所述压力控制组件分别用于调节高温高压容器内的温度和压力;A prestress application assembly, a temperature control assembly and a pressure control assembly are installed on the non-magnetic shell, and the prestress application assembly is in contact with the giant magnetostrictive element to adjust the prestress applied to the giant magnetostrictive element. Stress; the temperature control assembly and the pressure control assembly are respectively used to adjust the temperature and pressure in the high temperature and high pressure container;所述磁学参数检测组件安装在所述超磁致伸缩元件上,用于检测所述超磁致伸缩元件在不同外磁场、预应力、温度、压力下的变形量和表面磁场强度。The magnetic parameter detection component is installed on the giant magnetostrictive element, and is used to detect the deformation amount and surface magnetic field strength of the giant magnetostrictive element under different external magnetic fields, prestress, temperature, and pressure.
- 如权利要求1所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述外磁场组件还包括恒流源、线圈和磁极间距调节组件,通过所述恒流源向所述线圈供电,产生外加磁场。The measuring device of the magnetic parameter of giant magnetostrictive material as claimed in claim 1, it is characterized in that, described external magnetic field assembly also comprises constant current source, coil and magnetic pole pitch adjustment assembly, through described constant current source to described The coil is powered and an applied magnetic field is generated.
- 如权利要求2所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述超磁致伸缩元件在所述外磁场作用下发生磁致伸缩。The device for measuring magnetic parameters of a giant magnetostrictive material according to claim 2, wherein the giant magnetostrictive element undergoes magnetostriction under the action of the external magnetic field.
- 如权利要求2所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述外磁场组件通过改变恒流源输入线圈的电流的大小以及通过磁极间距调节组件调节磁极之间的距离,实现外磁场大小的精确调节。The measuring device of the magnetic parameter of giant magnetostrictive material as claimed in claim 2, it is characterized in that, described external magnetic field component is by changing the size of the electric current that constant current source inputs coil and adjusts the distance between magnetic poles by magnetic pole spacing adjusting component distance to achieve precise adjustment of the size of the external magnetic field.
- 如权利要求1所述的超磁致伸缩材料磁学参数的测量装置,其特征 在于,所述不导磁压力容器组件还包括不导磁样品支架,所述不导磁样品支架固定在所述不导磁外壳的内部,用于承托所述磁学参数检测组件以及所述超磁致伸缩元件。The device for measuring the magnetic parameters of giant magnetostrictive materials according to claim 1, wherein the non-magnetic pressure vessel assembly also includes a non-magnetic sample holder, and the non-magnetic sample holder is fixed on the The inside of the non-magnetic shell is used to support the magnetic parameter detection assembly and the giant magnetostrictive element.
- 如权利要求1所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述预应力施加组件包括预应力螺杆和预应力显示仪表,通过泵压调节预应力大小,用于给超磁致伸缩元件提供数值大小可调的偏置预应力。The device for measuring the magnetic parameters of giant magnetostrictive materials as claimed in claim 1, wherein the prestress application assembly includes a prestress screw and a prestress display instrument, and the prestress size is adjusted by pump pressure for giving The giant magnetostrictive element provides an adjustable bias prestress.
- 如权利要求1所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述温度控制组件包括加热装置,用于给超磁致伸缩材料元件提供温度可调的温度场。The device for measuring the magnetic parameters of the giant magnetostrictive material according to claim 1, wherein the temperature control component includes a heating device for providing a temperature-adjustable temperature field for the giant magnetostrictive material element.
- 如权利要求1所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述压力控制组件包括加压装置,用于给磁致伸缩材料元件提供压力大小可调的压力场。The device for measuring magnetic parameters of giant magnetostrictive materials according to claim 1, wherein the pressure control assembly includes a pressurizing device for providing a pressure field with adjustable pressure to the magnetostrictive material element.
- 如权利要求1所述的超磁致伸缩材料磁学参数的测量装置,其特征在于,所述磁学参数检测装置包括应变片传感器和磁场传感器;The measuring device of the magnetic parameter of giant magnetostrictive material as claimed in claim 1, is characterized in that, described magnetic parameter detecting device comprises strain gauge sensor and magnetic field sensor;所述应变片传感器安装在超磁致伸缩元件的侧面,用于检测超磁致伸缩元件的变形量;The strain gauge sensor is installed on the side of the giant magnetostrictive element for detecting the amount of deformation of the giant magnetostrictive element;所述磁场传感器安装在超磁致伸缩元件和预应力螺杆之间,用于测量超磁致伸缩元件表面磁场强度。The magnetic field sensor is installed between the giant magnetostrictive element and the prestressed screw rod, and is used for measuring the surface magnetic field intensity of the giant magnetostrictive element.
- 一种超磁致伸缩材料磁学参数的测量方法,其特征在于,包括以下步骤:A method for measuring the magnetic parameters of a giant magnetostrictive material, characterized in that it comprises the following steps:步骤1:通过预应力施加组件,调节泵压大小来调节施加在超磁致伸缩材料上的预应力大小,并通过预应力及压力显示仪表显示预应力的大小;Step 1: Adjust the pump pressure to adjust the prestress applied to the giant magnetostrictive material through the prestress applying component, and display the prestress through the prestress and pressure display instrument;步骤2:利用恒流源给外磁场组件供应直流电,使其产生稳恒磁场,给超磁致伸缩元件施加一定的磁场强度而使超磁致伸缩元件发生伸缩变形,记录此时的外磁场B;Step 2: Use a constant current source to supply direct current to the external magnetic field components to make it generate a stable magnetic field, apply a certain magnetic field strength to the giant magnetostrictive element to make the giant magnetostrictive element stretch and deform, and record the external magnetic field B at this time ;步骤3:通过安装在磁致伸缩材料表面的磁场传感器测得超磁致伸缩元件表面的磁感应强度H;Step 3: Measure the magnetic induction intensity H on the surface of the giant magnetostrictive element through a magnetic field sensor installed on the surface of the magnetostrictive material;步骤4:将安装在超磁致伸缩元件侧面的应变片传感器连接到应变仪上,通过应变片传感器测得超磁致伸缩元件的变形量;Step 4: Connect the strain gauge sensor installed on the side of the giant magnetostrictive element to the strain gauge, and measure the deformation of the giant magnetostrictive element through the strain gauge sensor;步骤5:分别记录上述测得的偏置应力大小、外磁场B、超磁致伸缩元件表面磁场强度H以及应变仪上测得的数据;Step 5: Record the above-mentioned measured bias stress, external magnetic field B, surface magnetic field strength H of the giant magnetostrictive element, and the data measured on the strain gauge;步骤6:改变直流电的电流大小,依次重复步上述步骤1至步骤5。Step 6: Change the current magnitude of the direct current, and repeat the above steps 1 to 5 in sequence.
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