CN100412520C - Amorphous Alloy Strain Gauge - Google Patents

Amorphous Alloy Strain Gauge Download PDF

Info

Publication number
CN100412520C
CN100412520C CNB2006100880632A CN200610088063A CN100412520C CN 100412520 C CN100412520 C CN 100412520C CN B2006100880632 A CNB2006100880632 A CN B2006100880632A CN 200610088063 A CN200610088063 A CN 200610088063A CN 100412520 C CN100412520 C CN 100412520C
Authority
CN
China
Prior art keywords
amorphous alloy
strain gauge
coil
turns
magnetic pole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2006100880632A
Other languages
Chinese (zh)
Other versions
CN1888841A (en
Inventor
石延平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Ocean University
Original Assignee
Jiangsu Ocean University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Ocean University filed Critical Jiangsu Ocean University
Priority to CNB2006100880632A priority Critical patent/CN100412520C/en
Publication of CN1888841A publication Critical patent/CN1888841A/en
Application granted granted Critical
Publication of CN100412520C publication Critical patent/CN100412520C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The middle of amorphous alloy thin strip heaves to one side and forms arch bridge type magnetic pole of a kind of amorphous alloy strain gauge. The bridge of magnetic pole parallel winds along the body of amorphous alloy thin strip and the height of heave is h, 0<h<0.5mm.There are excitation loop and measure loop enlace on the pole side by side and the magnetic field intensity is 0.01-0.05A/mm of the excitation loop. The amorphous alloy strain gauge adheres strongly on surface to measuring material so it takes distortion with measuring work piece along the portrait at the same time. It arouses the change of iron core magnetism conductance and inductance value to finish the test of piece. It utilizes well soft magnetism characteristic and steady temperature capability of amorphous alloy, so it is fit for testing tiny force and displacement with high testing sensitivity. Its temperature error is small and testing circuit is easy to be used in abominable condition with long using life.

Description

非晶态合金应变计 Amorphous Alloy Strain Gauge

技术领域 technical field

本发明涉及一种用于机械应力的测量的装置,特别是一种非晶态合金应变计。The invention relates to a device for measuring mechanical stress, in particular to an amorphous alloy strain gauge.

背景技术 Background technique

测量应力的技术和方法有多种,与非晶态合金应变计相近的是电阻应变计,又称为电阻应变片,电阻应变片的工作原理是基于它的应变效应。使用应变片测量构件应力或应变时,将电阻应变片粘贴于被测构件表面,应变片和零件一起变形,由于片内金属丝尺寸和电阻率都产生变化,金属丝的电阻值也产生变化,通过测量电路(电阻应变仪)测出电阻值的变化即可求得应变或应力的大小。电阻应变计是目前测量应变、荷重、拉力、压力等物理量的常用技术,但也存在一些缺点:常规应变片在大应变状态下,电阻变化率与应变的关系呈现较大的非线性,半导体应变片更为显著。常规应变片输出信号较小,对信号连接导线要进行认真屏蔽.。应变片有一定的尺寸。所以实际测出的是某一面积上的平均应变,不能完全显示应力场中应力梯度的情况。受温度的影响比较大。不适合在恶劣的环境下长期工作。There are many techniques and methods for measuring stress. Similar to amorphous alloy strain gauges are resistance strain gauges, also known as resistance strain gauges. The working principle of resistance strain gauges is based on its strain effect. When using strain gauges to measure component stress or strain, the resistance strain gauge is pasted on the surface of the measured component, and the strain gauge and the part deform together. Since the size and resistivity of the metal wire in the sheet change, the resistance value of the metal wire also changes. The strain or stress can be obtained by measuring the change of the resistance value through the measuring circuit (resistance strain gauge). Resistance strain gauge is a common technology for measuring physical quantities such as strain, load, tension, and pressure at present, but there are also some disadvantages: the relationship between the resistance change rate and strain of conventional strain gauges is relatively nonlinear in the state of large strain, and the semiconductor strain gauge piece is more pronounced. The output signal of conventional strain gauges is small, and the signal connecting wires should be carefully shielded. Strain gauges have a certain size. Therefore, what is actually measured is the average strain on a certain area, which cannot fully display the stress gradient in the stress field. It is greatly affected by temperature. Not suitable for long-term work in harsh environments.

发明内容 Contents of the invention

本发明要解决的技术问题是针对现有技术的不足,提出了一种测量灵敏度高、温度误差小的非晶态合金应变计。The technical problem to be solved by the invention is to propose an amorphous alloy strain gauge with high measurement sensitivity and small temperature error in view of the deficiencies of the prior art.

本发明要解决的技术问题是通过以下技术方案来实现的,一种非晶态合金应变计,其特点是:非晶态合金薄带的中部向一侧凸起形成拱桥形磁极,磁极的桥面与非晶态合金薄带本体平行设置,磁极凸起的高度为h,0<h<0.5mm,在磁极上并排缠绕有励磁线圈和测量线圈,励磁线圈磁场强度为0.01~0.05A/mm。The technical problem to be solved in the present invention is achieved through the following technical scheme, an amorphous alloy strain gauge, which is characterized in that: the middle part of the amorphous alloy thin strip protrudes to one side to form an arch bridge-shaped magnetic pole, and the bridge of the magnetic pole The surface is set parallel to the main body of the amorphous alloy thin strip, the height of the magnetic pole protrusion is h, 0<h<0.5mm, the excitation coil and the measurement coil are wound side by side on the magnetic pole, and the magnetic field strength of the excitation coil is 0.01~0.05A/mm .

本发明要解决的技术问题还可以通过以下技术方案来进一步实现,励磁线圈的匝数为5~8匝,测量线圈的匝数为8~10匝。The technical problem to be solved by the present invention can be further realized through the following technical solutions, the number of turns of the exciting coil is 5-8 turns, and the number of turns of the measuring coil is 8-10 turns.

使用非晶态合金应变计测量应力时,将非晶态合金应变计牢固地附着在被测材料的表面,使其整体沿纵向与被测工件同时发生变形,从而引起铁芯中磁导率的变化,导致电感值改变,实现工件应变的检测。其工作原理是基于压磁效应,所谓压磁效应是指,当磁化的被测材料受到应力作用时,由于磁致伸缩的各向异性,拉应力将使λs为正的材料磁化方向转向拉应力的平行方向,也即与拉应力平行方向的磁导率增大(磁阻减小),而在与拉应力垂直方向难以磁化,也即与拉应力垂直方向的磁导率减小(磁阻增大);压应力的情况则相反。非晶态合金是一种新型材料,由于其具有独特的性能,在传感器技术中应用的越来越多。本发明利用非晶态合金良好的软磁特性和稳定的温度性能,与传统的电阻应变计相比,它具有一下主要优点:(1)具有较高的测量灵敏度,尤其适合微力或者微小位移的测量;(2)温度误差小;(3)测量电路简单;(4)可以在恶劣环境下工作,使用寿命长。(5)结构简单,制作方便。When using an amorphous alloy strain gauge to measure stress, the amorphous alloy strain gauge is firmly attached to the surface of the measured material, so that the entire body deforms along the longitudinal direction at the same time as the workpiece under test, thereby causing a change in the magnetic permeability in the iron core. The change causes the inductance value to change, and realizes the detection of workpiece strain. Its working principle is based on the piezomagnetic effect. The so-called piezomagnetic effect means that when the magnetized material to be tested is subjected to stress, due to the anisotropy of magnetostriction, the tensile stress will make the magnetization direction of the material whose λs is positive turn to the tensile stress. The parallel direction, that is, the magnetic permeability in the direction parallel to the tensile stress increases (reluctance decreases), and it is difficult to magnetize in the direction perpendicular to the tensile stress, that is, the magnetic permeability in the direction perpendicular to the tensile stress decreases (reluctance increase); the opposite is true for compressive stress. Amorphous alloys are a new class of materials that are increasingly being used in sensor technology due to their unique properties. The invention utilizes the good soft magnetic characteristics and stable temperature performance of the amorphous alloy, and compared with the traditional resistance strain gauge, it has the following main advantages: (1) It has higher measurement sensitivity, especially suitable for micro force or micro displacement (2) The temperature error is small; (3) The measurement circuit is simple; (4) It can work in harsh environments and has a long service life. (5) The structure is simple and easy to manufacture.

附图说明Description of drawings

附图为本发明的结构简图。Accompanying drawing is the structural diagram of the present invention.

具体实施方式 Detailed ways

一种非晶态合金应变计,非晶态合金薄带1的中部向一侧凸起形成拱桥形磁极2,磁极2的桥面与非晶态合金薄带1本体平行设置,磁极2凸起的高度为h,0<h<0.5mm,此值越小越好,以减小附加弯矩。在磁极2上并排缠绕有励磁线圈4和测量线圈3。此时凸起部分相当于线圈铁芯。应变计的具体的尺寸主要由所选非晶态合金材料的允许应力决定。目前国内安泰科技股份有限公司所提供的非晶态合金薄带的规格为:宽度5~100mm,厚度0.03mm,长度可根据需要裁剪,用户也可以根据需求订做特殊规格。当主要测量拉应力时,可以采用比较薄的非晶态合金薄带;当主要测量压应力时,则可以采用比较厚的非晶态合金薄带。用户可以通过特殊订制,或通过叠加来增加非晶态合金薄带的厚度。An amorphous alloy strain gauge, the middle part of the amorphous alloy thin strip 1 protrudes to one side to form an arch bridge-shaped magnetic pole 2, the bridge surface of the magnetic pole 2 is arranged parallel to the main body of the amorphous alloy thin strip 1, and the magnetic pole 2 protrudes The height is h, 0<h<0.5mm, the smaller the value, the better to reduce the additional bending moment. An exciting coil 4 and a measuring coil 3 are wound side by side on the magnetic pole 2 . At this time, the raised portion corresponds to the coil core. The specific size of the strain gauge is mainly determined by the allowable stress of the selected amorphous alloy material. At present, the specifications of the amorphous alloy thin strips provided by Antai Technology Co., Ltd. in China are: width 5-100mm, thickness 0.03mm, the length can be cut according to needs, and users can also customize special specifications according to needs. When the tensile stress is mainly measured, a relatively thin amorphous alloy strip can be used; when the compressive stress is mainly measured, a relatively thick amorphous alloy strip can be used. Users can increase the thickness of amorphous alloy thin strips by special order or by stacking.

应变计材料选择Strain Gauge Material Selection

根据磁弹性理论,铁磁材料的相对磁导率变化与应力σ之间的关系为According to the theory of magnetoelasticity, the relationship between the relative permeability change of ferromagnetic materials and the stress σ is

&Delta;&mu;&Delta;&mu; &mu;&mu; == 22 &lambda;&lambda; mm BB mm 22 &sigma;&mu;&sigma;&mu;

式中,μ为铁磁材料的磁导率;Bm为饱和磁感应强度。由上式可知,为了保证应变计具有较高的测量灵敏度,所选非晶态合金材料应该具有较大的磁致伸缩系数和磁导率,较小的饱和磁感应强度。在目前技术上得到广泛应用的三类非晶态合金中,具有上述特性的材料,当属TM-M型的Fe基非晶态合金。这种材料具有很高的机电转换效率,经过适当的退火处理,其机电转换效率还可以进一步提高。除此之外,TM-M型非晶态合金具有良好温度稳定性和时效稳定性,可加工性好,价格便宜,很适合制作应变计。目前国内安泰科技股份有限公司生产的Fe基非晶态合金薄带的主要物理性能为:饱和磁感应强度Bs=1.56T;居里温度Tc=410℃;饱和磁致伸缩系数λs=27×10-6;电阻率ρ=130Ωμ-cm;最大导磁率μ>25×104In the formula, μ is the magnetic permeability of the ferromagnetic material; B m is the saturation magnetic induction. It can be seen from the above formula that in order to ensure a high measurement sensitivity of the strain gauge, the selected amorphous alloy material should have a large magnetostriction coefficient and permeability, and a small saturation magnetic induction. Among the three types of amorphous alloys that are widely used in the current technology, the material with the above characteristics is undoubtedly the TM-M type Fe-based amorphous alloy. This material has high electromechanical conversion efficiency, and its electromechanical conversion efficiency can be further improved after proper annealing treatment. In addition, the TM-M type amorphous alloy has good temperature stability and aging stability, good machinability and low price, and is very suitable for making strain gauges. At present, the main physical properties of the Fe-based amorphous alloy ribbon produced by Antai Technology Co., Ltd. in China are: saturation magnetic induction intensity Bs = 1.56T; Curie temperature Tc = 410°C; saturation magnetostriction coefficient λs = 27×10 - 6 ; resistivity ρ=130Ωμ-cm; maximum magnetic permeability μ>25×10 4 .

应变计主要参数确定Determination of the main parameters of the strain gauge

非晶态合金应变计的主要参数为励磁线圈和测量线圈的匝数N1、N2,励磁电流强度I,磁场强度H,其中磁场强度H对应变计的测量灵敏度影响最大。确定磁场强度H要使非晶态合金应变计工作在最大磁导率和磁化曲线(B-H)的线性段。磁芯材料时通常所施加的磁场强度H值,非晶态合金应变计的励磁磁场强度0.01~0.05A/mm。当磁场强度H确定后,可由下式求其他参数:The main parameters of the amorphous alloy strain gauge are the turns N 1 and N 2 of the exciting coil and the measuring coil, the exciting current I, and the magnetic field H, among which the magnetic field H has the greatest influence on the measurement sensitivity of the strain gauge. Determine the magnetic field strength H to make the amorphous alloy strain gauge work in the linear segment of the maximum permeability and magnetization curve (BH). The magnetic field strength H value usually applied when the magnetic core material is used, and the excitation magnetic field strength of the amorphous alloy strain gauge is 0.01-0.05A/mm. When the magnetic field strength H is determined, other parameters can be calculated by the following formula:

NN 11 == HlHl II

式中,Nl为励磁线圈匝数;l为非晶态合金应变计凸起长度;I为励磁电流强度。励磁线圈的匝数为5~8匝左右,测量线圈的匝数为8~10匝左右。可测力范围为(1~100)×104N。当励磁线圈匝数Nl确定后,励磁电流强度I即可确定。In the formula, N l is the number of turns of the excitation coil; l is the protrusion length of the amorphous alloy strain gauge; I is the excitation current intensity. The number of turns of the exciting coil is about 5 to 8 turns, and the number of turns of the measuring coil is about 8 to 10 turns. The measurable force range is (1~100)×10 4 N. When the number of turns N l of the excitation coil is determined, the intensity of the excitation current I can be determined.

非晶态合金应变计的磁路分析如下。将非晶态合金应变计牢固地附着于被测材料表面时,二者便形成了闭合磁路。当励磁线圈通入具有一定频率的交流电时,便在励磁线圈中产生了交变磁通φ。根据磁路定律,磁路中的瞬时磁通为:The magnetic circuit analysis of the amorphous alloy strain gauge is as follows. When the amorphous alloy strain gauge is firmly attached to the surface of the material under test, the two form a closed magnetic circuit. When the excitation coil is fed with alternating current with a certain frequency, an alternating magnetic flux φ is generated in the excitation coil. According to the law of magnetic circuit, the instantaneous magnetic flux in the magnetic circuit is:

Figure C20061008806300071
Figure C20061008806300071

R AB = l AB &mu; AB hb R CD = l CD &mu; CD ab r 0 = &delta; 0 &mu; 0 b s 0 and R AB = l AB &mu; AB hb R cd = l cd &mu; cd ab r 0 = &delta; 0 &mu; 0 b the s 0

式中,I——励磁电流强度;Nl——励磁线圈匝数;In the formula, I——excitation current intensity; N l ——number of turns of excitation coil;

RAB——非晶态合金应变计凸起部分的磁阻;R AB ——Reluctance of convex part of amorphous alloy strain gauge;

RCD——被测材料表面CD段磁阻;R CD ——CD segment magnetoresistance on the surface of the tested material;

r0——应变计与被测材料之间气隙磁阻,如果二者附着紧密牢固,气隙磁阻可忽略。r 0 ——air gap reluctance between the strain gauge and the material to be tested. If the two are tightly attached, the air gap reluctance can be ignored.

lAB——应变计凸起部分的长度;μAB——非晶态合金绝对磁导率;l AB - the length of the raised part of the strain gauge; μ AB - the absolute magnetic permeability of the amorphous alloy;

h——非晶态合金应变计的厚度;h—thickness of amorphous alloy strain gauge;

b——非晶态合金应变计凸起部分的宽度;b——the width of the convex part of the amorphous alloy strain gauge;

lCD——被测材料表面CD间的长度;l CD - the length between CDs on the surface of the material to be tested;

μCD——被测材料的绝对磁导率;μ CD ——absolute magnetic permeability of the tested material;

α——磁力线在被测材料表面的渗透深度;α——The penetration depth of the magnetic field line on the surface of the material to be tested;

δ0——非晶态合金应变计与被测材料表面间的气隙厚度;δ 0 ——The thickness of the air gap between the amorphous alloy strain gauge and the surface of the tested material;

μ0——空气磁导率;μ 0 ——air magnetic permeability;

s0——非晶态合金应变计与被测材料表面间的附着长度。s 0 ——the attachment length between the amorphous alloy strain gauge and the surface of the tested material.

根据法拉第电磁感应定律知,测量线圈中的感应电压为According to Faraday's law of electromagnetic induction, the induced voltage in the measuring coil is

Uu == 44 &pi;f&pi;f ININ 11 NN 22 (( ll ABAB &mu;&mu; ABAB hbhb ++ ll CDcd &mu;&mu; CDcd abab ++ &delta;&delta; 00 &mu;&mu; 00 bb sthe s 00 ))

式中f——励磁电流频率;M2——测量线圈匝数。In the formula, f——exciting current frequency; M 2 ——number of turns of measuring coil.

根据压磁效应,当被测材料表面有应力作用时,对于λs>0的铁磁材料,应力为拉应力时,磁导率μ提高,即μAB变为μAB+ΔμAB,μCD变为μCD+ΔμCD,则磁阻降低;当应力为压应力时,即μAB变为μAB-ΔμAB,μCD变为μCD-ΔμCD,则磁阻增加。磁阻的变化引起磁通量变化,测量线圈中的感应电压U也会变化。According to the piezomagnetic effect, when there is stress on the surface of the material to be tested, for ferromagnetic materials with λ s > 0, when the stress is tensile stress, the magnetic permeability μ increases, that is, μ AB becomes μ AB + Δμ AB , μ CD When the stress becomes μ CD +Δμ CD , the magnetoresistance decreases; when the stress is compressive stress, that is, μ AB becomes μ AB -Δμ AB , and μ CD becomes μ CD -Δμ CD , the magnetoresistance increases. The change of reluctance causes the magnetic flux to change, and the induced voltage U in the measuring coil also changes.

由于非晶态合金的磁导率远大于普通铁磁测量的磁导率,另外,如果能严格保证气隙厚度δ0为零,则上式变为Since the magnetic permeability of amorphous alloys is much larger than that measured by ordinary ferromagnetic, in addition, if the air gap thickness δ 0 can be strictly guaranteed to be zero, the above formula becomes

Uu == 44 &mu;&mu; ABAB hb&pi;fIhb&pi;fI NN 11 NN 22 ll ABAB

即测量线圈中的输出感应电压与被测材料的表面磁特性无关。That is, the output induced voltage in the measuring coil has nothing to do with the surface magnetic properties of the measured material.

非晶态合金应变计与被测材料之间结合质量对应力测量精度有很大的影响。采用粘贴的方法将非晶态合金应变计附着于被测构件表面,简单、方便,便于现场操作,但要合理选择粘结剂,高质量地对结合面进行处理。所选粘结剂既要有很高的粘度,固化时又不应该产生较大的体积收缩,另外,与非晶态合金应变计材料,以及与被测构件材料之间的热膨胀悉数要一致,否则在应变计内部会产生不均匀应力,影响测量稳定性。参考目前常采用的金属粘结工艺,要先对应变计粘贴处用砂轮打磨,然后用一定浓度的硅酸钠溶液清洗浸泡数分钟,然后进行粘贴。The quality of bonding between the amorphous alloy strain gauge and the measured material has a great influence on the accuracy of stress measurement. Attaching the amorphous alloy strain gauge to the surface of the measured component by pasting is simple, convenient, and convenient for on-site operation, but it is necessary to choose a reasonable adhesive and treat the joint surface with high quality. The selected binder should not only have a high viscosity, but also should not produce a large volume shrinkage during curing. In addition, the thermal expansion between the amorphous alloy strain gauge material and the measured component material must be consistent. Otherwise, uneven stress will be generated inside the strain gauge, which will affect the measurement stability. Referring to the metal bonding process commonly used at present, the sticking part of the strain gauge should be polished with a grinding wheel, then cleaned and soaked with a certain concentration of sodium silicate solution for several minutes, and then pasted.

在测量应力之前,要对非晶态合金应变计灵敏度系数进行标定,即对同一类型材料制成的应变计,只选其中一个进行标定。Before measuring the stress, the sensitivity coefficient of the amorphous alloy strain gauge should be calibrated, that is, only one of the strain gauges made of the same type of material should be selected for calibration.

Claims (2)

1. 一种非晶态合金应变计,其特征在于:非晶态合金薄带(1)的中部向一侧凸起形成拱桥形磁极(2),磁极(2)的桥面与非晶态合金薄带(1)本体平行设置,磁极(2)凸起的高度为h,0<h<0.5mm,在磁极(2)上并排缠绕有励磁线圈(4)和测量线圈(3),励磁线圈(4)磁场强度为0.01~2.05A/mm。1. An amorphous alloy strain gauge is characterized in that: the middle part of the amorphous alloy strip (1) bulges to one side to form an arch bridge-shaped magnetic pole (2), and the bridge surface of the magnetic pole (2) is in contact with the amorphous state Alloy thin strip (1) body is arranged in parallel, the height of the pole (2) protrusion is h, 0<h<0.5mm, the excitation coil (4) and the measurement coil (3) are wound side by side on the pole (2), the excitation The magnetic field strength of the coil (4) is 0.01-2.05A/mm. 2. 根据权利要求1所述的非晶态合金应变计,其特征在于:励磁线圈(4)的匝数为5~8匝,测量线圈(3)的匝数为8~10匝。2. The amorphous alloy strain gauge according to claim 1, characterized in that: the number of turns of the exciting coil (4) is 5 to 8 turns, and the number of turns of the measuring coil (3) is 8 to 10 turns.
CNB2006100880632A 2006-06-20 2006-06-20 Amorphous Alloy Strain Gauge Expired - Fee Related CN100412520C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100880632A CN100412520C (en) 2006-06-20 2006-06-20 Amorphous Alloy Strain Gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100880632A CN100412520C (en) 2006-06-20 2006-06-20 Amorphous Alloy Strain Gauge

Publications (2)

Publication Number Publication Date
CN1888841A CN1888841A (en) 2007-01-03
CN100412520C true CN100412520C (en) 2008-08-20

Family

ID=37578130

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006100880632A Expired - Fee Related CN100412520C (en) 2006-06-20 2006-06-20 Amorphous Alloy Strain Gauge

Country Status (1)

Country Link
CN (1) CN100412520C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937705B (en) * 2012-11-20 2015-07-08 重庆大学 Direct-current magnetic sensor with composite structure
CN104122324B (en) * 2014-08-06 2016-09-07 淮海工学院 A kind of steel wire rope Stress On-Line sensor
CN113008419A (en) * 2021-02-20 2021-06-22 浙江驰拓科技有限公司 Magneto-resistance type integrated stress sensor and preparation method and application thereof
CN113156349B (en) * 2021-05-18 2023-10-31 厦门理工学院 Method and device for measuring magneto-mechanical characteristics of material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950337A (en) * 1989-04-14 1990-08-21 China Steel Corporation Magnetic and mechanical properties of amorphous alloys by pulse high current

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950337A (en) * 1989-04-14 1990-08-21 China Steel Corporation Magnetic and mechanical properties of amorphous alloys by pulse high current

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
利用非晶态合金进行平面应力测试法的研究. 石延平,张永忠.机械强度,第26卷第2期. 2004
利用非晶态合金进行平面应力测试法的研究. 石延平,张永忠.机械强度,第26卷第2期. 2004 *
基于非晶态合金的应力测量方法的研究. 石延平,刘成文,张永忠.仪器仪表学报,第26卷第6期. 2005
基于非晶态合金的应力测量方法的研究. 石延平,刘成文,张永忠.仪器仪表学报,第26卷第6期. 2005 *
基于非晶态合金的逆磁致伸缩效应应变计的研究. 石延平,张永忠.中国机械工程,第15卷第10期. 2004
基于非晶态合金的逆磁致伸缩效应应变计的研究. 石延平,张永忠.中国机械工程,第15卷第10期. 2004 *
磁致伸缩传感器技术应用的发展. 文西芹,宁晓明,张永忠,刘成文.传感器技术,第22卷第2期. 2003
磁致伸缩传感器技术应用的发展. 文西芹,宁晓明,张永忠,刘成文.传感器技术,第22卷第2期. 2003 *

Also Published As

Publication number Publication date
CN1888841A (en) 2007-01-03

Similar Documents

Publication Publication Date Title
CN101430369B (en) Self-generating broadband laminated magneto-inducible piezoelectric effect AC magnetic field sensor and manufacturing method
CN100397059C (en) A Mechanical Stress Measuring Instrument
CN100412520C (en) Amorphous Alloy Strain Gauge
CN106225961B (en) Touch sensor for robot
CN103439034B (en) Multifunctional force cell sensor
Liang et al. Experimental researches on magneto-thermo-mechanical characterization of Terfenol-D
CN101153824A (en) A giant magnetostrictive pressure sensor
CN103197263B (en) There is the small-sized alternating magnetoelectric sensor of adjustable bias magnetic circuit
CN103542975B (en) A kind of highly sensitive magnetic-liquid micro differential pressure sensor
CN202329889U (en) Torque sensor based on magnetostrictive effect
CN102401708A (en) Torque sensor based on magnetostriction effect and torque measuring method
CN103454024B (en) Based on the concrete-bridge tendon tension measuring method of converse magnetostriction
CN104407311A (en) Sheet type giant magnetostrictive magnetic field sensor based on fiber Bragg grating
CN109782047A (en) A direct discharge current sensor based on amorphous nanocrystalline special-shaped magnetic core
JP6151863B2 (en) Mechanical stress sensor
Lo Compositional dependence of the magnetomechanical effect in substituted cobalt ferrite for magnetoelastic stress sensors
CN205808596U (en) A kind of touch sensor for robot
CN104931899B (en) A kind of method for improving magnetic field sensor probe head sensitivity
JP2001056266A (en) Method and device for determining time characteristic of shock wave in ferromagnetic body subject to impact load
CN204575096U (en) A kind of flexible magnetic turns round type magnetoelectric transducer
CN104375099A (en) Material detection probe based on initial permeability method
CN101701790B (en) Novel inductive strain rosette
CN115452204A (en) A Force Sensing Measurement Method Based on Inverse Magnetostrictive Effect
CN203037385U (en) Suspender tension sensor with by-path excitation
CN102692287A (en) Novel stress sensor based on magnetoresistance effect

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080820

Termination date: 20110620