CN114062244A - Experiment measurement device, experiment equipment and experiment measurement method - Google Patents
Experiment measurement device, experiment equipment and experiment measurement method Download PDFInfo
- Publication number
- CN114062244A CN114062244A CN202010766674.8A CN202010766674A CN114062244A CN 114062244 A CN114062244 A CN 114062244A CN 202010766674 A CN202010766674 A CN 202010766674A CN 114062244 A CN114062244 A CN 114062244A
- Authority
- CN
- China
- Prior art keywords
- experimental
- pressure sensor
- force application
- measurement
- pressure
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses an experimental measurement device, experimental equipment and an experimental measurement method, wherein the experimental measurement device comprises: the fixing part is provided with an installation groove, and a first through hole is formed in the bottom of the installation groove; the first force application piece penetrates through the first through hole, and the first end of the first force application piece extends towards the direction far away from the mounting groove; the first surface of the pressure sensor is abutted with the first end of the first force application member, the second surface of the pressure sensor is abutted with the loading rod, and the external part of the loading rod is sleeved with the restraint tube; the second force application piece is arranged at one end, far away from the pressure sensor, of the restraint tube and extends towards the interior of the restraint tube; an accommodating space is arranged between the loading rod and the second force application part inside the constraint pipe. According to the embodiment of the invention, the correlation between the rough surfaces and the applied pressure among the experimental parts is detected, so that the contact area of the rough surfaces among the experimental parts and the rule of the contact gap changing along with the pressure are accurately measured.
Description
Technical Field
The invention relates to the field of mechanical engineering, in particular to an experimental measurement device, experimental equipment and an experimental measurement method.
Background
Contact measurement of rough surfaces is a difficult problem that plagues the study and application of contact mechanics, friction, wear, lubrication, sealing, and surface coatings. The existing contact mechanics experimental measurement methods have great limitations: non-optical measurement methods (thermal resistance, ultrasound, etc.) can only indirectly evaluate the actual contact area, and the accuracy of the measurement result is low and the contact gap cannot be measured; the optical measurement method has high precision and part of the method can also measure the contact gap, but cannot measure the contact behavior between two non-transparent surfaces, which cannot meet the contact measurement requirement of an actual rough surface.
Disclosure of Invention
In order to solve the technical problems, the invention provides an experimental measurement device, experimental equipment and an experimental measurement method, and solves the problem that the existing measurement mode cannot meet the measurement requirement.
According to an aspect of the present invention, there is provided an experimental measurement device comprising:
the fixing part is provided with an installation groove, and a first through hole is formed in the bottom of the installation groove;
the first force application piece penetrates through the first through hole, and a first end of the first force application piece extends towards the direction far away from the mounting groove;
the first surface of the pressure sensor is abutted with the first end of the first force application piece, the second surface of the pressure sensor is abutted with the loading rod, and the exterior of the loading rod is sleeved with a constraint pipe;
the second force application member is arranged at one end, far away from the pressure sensor, of the restraint tube and extends towards the interior of the restraint tube;
and an accommodating space is formed between the loading rod and the second force application part in the restraint tube.
Optionally, the fixing portion includes: the device comprises a base and a cross beam fixedly connected with the base;
the base is provided with a second through hole;
the cross beam is provided with a first groove, and an opening of the first groove faces the base;
the second through hole is communicated with the first groove to form the mounting groove.
Optionally, in a case that an experimental component is installed in the accommodating space, the loading rod abuts against one end of the experimental component, and the second force application member abuts against the other end of the experimental component.
Optionally, the load lever comprises: the bearing part and the rod part are connected with the bearing part;
the force bearing part is in contact connection with the second surface of the pressure sensor, and the rod part and the first force application part are located on the same axis.
Optionally, the area of one side end face of the force bearing part facing the pressure sensor is the same as the area of the cross section of the pressure sensor along the axis vertical direction.
Optionally, the pressure sensor is fixedly connected with the fixing portion.
Optionally, the restraining tube is fixedly connected with the fixing part;
the first end of the first force application part, the pressure sensor and the loading rod are sleeved with the restraint pipe.
According to another aspect of the present invention, there is provided an experimental facility including the experimental measurement device described above, the experimental facility further including:
the fixed part of the experimental measurement device is arranged on the objective table;
the ray detector is used for receiving the ray emitted by the ray source and transmitting the ray to the accommodating space;
the controller is respectively connected with the objective table, the ray source and the ray detector;
the controller controls the ray source to emit rays, the ray detector receives and measures the rays, and the controller acquires measurement data of the ray detector.
Optionally, the assay component comprises a first component and a second component;
when the experimental component is assembled in the accommodating space of the experimental measuring device, the rough surface of the first component is in contact with the rough surface of the second component.
According to another aspect of the present invention, there is provided an experimental measurement method applied to the above experimental apparatus, including:
an experimental part is arranged in the accommodating space of the experimental measuring device, and the ray source is controlled to emit rays under the condition that the first force application part applies pressure to the pressure sensor;
acquiring measurement data of the rays detected by a ray detector;
and obtaining the measurement result of the experimental part according to the measurement data.
Optionally, the pressure applied by the first force applying member to the pressure sensor increases linearly.
Optionally, after the controlling the radiation source to emit radiation, the method further includes:
controlling the objective table to rotate by a preset angle at preset time intervals;
the acquiring of the measurement data of the ray detected by the ray detector comprises:
and acquiring the measurement data of the ray detector when the objective table rotates to different angles.
Optionally, obtaining a measurement result of the experimental component according to the measurement data includes:
generating three-dimensional models of the experimental part under different pressures according to the measurement data;
processing data according to the three-dimensional model to obtain the incidence relation between the experimental part and pressure change;
wherein, the correlation between the experimental part and the pressure change is as follows: the contact area and the contact gap between the rough surfaces of the first part and the second part in the experimental part are along with the evolution rule of the pressure change.
The embodiment of the invention has the beneficial effects that:
according to the embodiment of the invention, the experiment component is assembled in the accommodating space of the restraint tube, the position of the experiment component can be adjusted through the second force application part, the pressure is applied through the first force application part, the pressure sensor transmits the pressure to the experiment component through the loading rod, and the contact area of the rough surface between the experiment components and the rule that the contact gap changes along with the pressure are accurately measured by detecting the incidence relation between the rough surface between the experiment components and the applied pressure.
Drawings
FIG. 1 shows a schematic structural diagram of an experimental measurement device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an experimental apparatus according to an embodiment of the present invention;
FIG. 3 shows a schematic flow diagram of the experimental measurement method of the present invention.
Wherein in the figure: 1. the device comprises a fixing part, 2, a first force application part, 3, a pressure sensor, 4, a loading rod, 5, a constraint tube, 6, a second force application part, 7, an objective table, 8, a ray source, 9, a ray detector, 10, an experimental part, 11, a mounting groove, 12, a base, 13, a beam, 14, a controller, 101, a first part, 102, a second part, 100 and an experimental measurement device.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides an experimental measurement device, including:
the fixing part 1 is provided with a mounting groove 11, and a first through hole is formed in the bottom of the mounting groove 11;
the first force application part 2 penetrates through the first through hole, and a first end of the first force application part 2 extends towards the direction far away from the installation groove 11;
a first surface of the pressure sensor 3 is abutted with a first end of the first force application member 2, a second surface of the pressure sensor 3 is abutted with a loading rod 4, and a constraint pipe 5 is sleeved outside the loading rod 4;
a second force application member 6 disposed at one end of the restraint tube 5 away from the pressure sensor 3 and extending toward the interior of the restraint tube 5;
an accommodating space is formed between the loading rod 4 and the second force application part 6 inside the constraint tube 5.
In this embodiment, the experimental measurement device is used for fixing the experimental part 10 when measuring the contact behavior of the rough surface, and the experimental part 10 is installed in the accommodating space of the restraint tube 5. The fixed part 1 is used for connecting, fixing and restraining all parts, and when experimental measurement is carried out, the fixed part 1 is fixed on an objective table of experimental equipment; as shown in fig. 1, a mounting groove 11 with a downward buckle is formed at the bottom end of the fixing portion 1, the first through hole is formed at the bottom of the mounting groove 11, and the first through hole communicates the bottom of the mounting groove and the upper surface of the fixing portion 1; the first force application member 2 is arranged in the first through hole from bottom to top in a penetrating manner, namely, the first end of the first force application member 2 extends out of the first through hole; a first end of the first force applying member 2 extends out of the first through hole and then abuts against a first surface of the pressure sensor 3, and the first force applying member 2 is used for applying pressure to the pressure sensor 3; pressure sensor 3 with the relative second surface of first surface and loading pole 4 butt, pressure sensor 3 will receive the power through loading pole 4 transmits extremely experimental part 10 in the accommodation space, through detecting the incidence relation of the rough surface of experimental part 10 and the pressure of exerting, the accurate contact area and the contact gap along with the rule of pressure variation of the rough surface between the measurement experimental part.
A constraint tube 5 is sleeved outside the loading rod 4, the constraint tube 5 is used for constraining the loading rod 4 and the experimental component, a second force application member 6 is arranged at one end, far away from the loading rod 4, of the constraint tube 5, and the second force application member 6 extends from one end of the constraint tube 5 and abuts against the experimental component 10; the experimental part 10 is assembled between the loading rod 4 and the second force application member 6, and two ends of the experimental part 10 are respectively abutted against the loading rod 4 and the second force application member 6.
In the experiment process, a pressure load is applied to a first surface of a pressure sensor 3 through the first force applying member 2, a loading rod 4 is positioned on a second surface of the pressure sensor 3, and the pressure sensor 3 transmits the pressure load to an experiment part 10 through the loading rod 4 to apply a contact pressure load to the experiment part 10.
As shown in FIG. 1, the assay part 10 comprises a first part 101 and a second part 102, and the material of the assay part may be non-transparent, e.g. a metallic material. In the experimental process, the rough surface of first part 101 with the rough surface of second part 102 sets up relatively, through the position of experimental part can be adjusted to second application of force piece 6, through first application of force piece 2 applys pressure, can realize under different pressure first part 101 with the actual area of contact and the accurate measurement of contact gap of the rough surface of second part 102 obtain area of contact and contact gap along with the evolution law of contact pressure, provide more effective and accurate measuring device for the research in fields such as friction, wearing and tearing, lubrication, sealing and the rough surface contact behavior experimental detection in the actual production.
As shown in fig. 1, the first force application member 2 may be a loading bolt, a screw of the loading bolt passes through the first through hole and extends out of the first through hole, and the pressure applied to the pressure sensor 3 may be adjusted by adjusting the loading bolt. The second force application part 6 can be an adjusting bolt, the screw rod of the adjusting bolt extends into the restraint pipe 5 from one end thereof and is used for being abutted against the experimental part 10, and the adjusting bolt can be adjusted up and down to the setting position of the experimental part. It should be noted that the first force application member 2 and the second force application member 6 include, but are not limited to, the above-mentioned bolt structures, and may also be configured as other adjustable loading components according to the requirement.
Specifically, the fixing part 1 may include: a base 12 and a beam 13 fixedly connected with the base 12; the base 12 is provided with a second through hole; the cross beam 13 is provided with a first groove, and an opening of the first groove faces the base 12; the second through hole is communicated with the first groove to form the mounting groove 11.
The base 12 is used for fixing other components and is fixed on a stage of experimental equipment in an experiment; the beam 13 is assembled on the base 12, a first groove is formed in the beam 13, the first groove and a second through hole in the base 12 are formed as the mounting groove 11, and the first force application part 2 is assembled in the first through hole in the bottom of the first groove.
As shown in fig. 1, when the test piece 10 is set in the housing space, the loading rod 4 abuts against one end of the test piece 10, and the second biasing member 6 abuts against the other end of the test piece 10. The assembly of experiment part 10 is in load bar 4 with in the accommodation space between the second application of force piece 6, just the both ends of experiment part 10 respectively with load bar 4 with second application of force piece 6 butt is located like this experiment part 10 top second application of force piece 6 can be adjusted the upper and lower position of experiment part 10 is located the experiment part 10 below load bar 4 can be with the pressure transmission that pressure sensor 3 received extremely experiment part 10 realizes the clamp of experiment part 10. The rough surfaces of the first part 101 and the second part 102 in the experimental part 10 are arranged oppositely, so that the contact area of the rough surfaces between the two parts and the rule that the contact gap changes along with the pressure are measured.
Optionally, the loading lever 4 comprises: the bearing part and the rod part are connected with the bearing part; the force bearing part is in contact connection with the second surface of the pressure sensor 3, and the rod part and the first force application part 2 are located on the same axis.
As shown in fig. 1, the portion of the loading rod 4 abutting against the pressure sensor 3 is a force-bearing portion having the same or similar shape as the pressure sensor 3, the area of the force-bearing portion facing the end surface of one side of the pressure sensor 3 is the same as the area of the cross section of the pressure sensor 3 in the direction perpendicular to the axis, so that the force-bearing area of the force-bearing portion can be maximized, the pressure sensor can transmit the pressure from the first force application member 2 to the force-bearing portion to the maximum extent, and the force-bearing portion transmits the pressure to the experimental part through the rod portion, thereby reducing the loss of the pressure during transmission and improving the measurement accuracy.
The pressure sensor 3 is fixedly connected with the fixing part 1. The first force applying member 2 abutting on the first surface of the pressure sensor 3 is rod-shaped, and the pressure sensor 3 and the fixing portion 1 are fixedly connected to each other in order to secure the fixing firmness of the pressure sensor 3.
The restraint tube 5 is fixedly connected with the fixing part 1; the first end of the first force application member 2, the pressure sensor 3 and the loading rod 4 are sleeved with the restriction pipe 5. Wherein, the restraining tube 5 can be made of low-density high-strength material, such as high-strength plastic, high-strength aluminum alloy, and the like, and is designed to be elongated so as to reduce the influence on the measurement precision as much as possible; the restraint tube 5 is mounted to the fixing portion 1 for restraining the loading rod 4 and the test sample.
The embodiment of this application, the experiment part assembly can adjust the position of experiment part through second application of force piece in the accommodation space of about pipe, exerts pressure through first application of force piece, and pressure sensor passes through the load lever and transmits pressure to the experiment part, through the incidence relation of the rough surface that detects between the experiment part and the pressure of exerting, the contact area and the contact gap of the rough surface of accurate measurement between the experiment part along with pressure variation's law.
As shown in fig. 2, an experimental apparatus is further provided in the embodiment of the present application, including the above experimental measurement device 100, and the experimental apparatus further includes:
a stage 7 on which the fixed part 1 of the experimental measurement device 100 is mounted;
the device comprises a ray source 8 and a ray detector 9, wherein rays emitted by the ray source 8 pass through an experimental part 10 in the accommodating space and are transmitted to the ray detector 9;
a controller 14 connected to the stage 7, the radiation source 8, and the radiation detector 9, respectively;
the controller 14 controls the radiation source 8 to emit radiation, the radiation detector 9 receives and measures the radiation, and the controller 14 obtains measurement data of the radiation detector 9.
The experimental device may be an x-ray Computed Tomography (CT) device, the controller 14 may be a computer, and the x-ray source emits x-rays, and in the embodiment of the present application, the contact mechanics experiment measurement is performed on the experimental part 10 installed in the experiment measurement apparatus 100 by using an x-ray CT detection technology. The detection precision of the x-ray CT apparatus is limited by the density of the experimental component 10 and the distance between the experimental component 10 and the radiation source 8, the smaller the density of the experimental component 10 to be detected is, and the closer the distance between the experimental component 10 and the radiation source is, the smaller the energy attenuation of the x-ray after penetrating through the experimental component 10 is, and the higher the detection precision is; in the embodiment of the present application, in order to apply a sufficient contact pressure load to the contact pair formed by the experimental components, the experimental components are assembled in the experimental measurement device shown in fig. 1, and a sufficiently high contact pressure load is provided for the rough surface between the measured experimental components without largely affecting the measurement accuracy as much as possible.
The experimental part comprises a first part 101 and a second part 102; when the experimental part 10 is fitted into the receiving space of the experimental measuring device 100, the rough surface of the first part 101 is in contact with the rough surface of the second part 102.
When measuring the contact area of the rough surfaces of the first part 101 and the second part 102 and the evolution law between the contact gap and the pressure, taking the experimental device as an x-ray CT device as an example, the main steps of the experimental method are as follows:
the method comprises the following steps: detaching an adjusting bolt (namely, the second force application member 6) of the experimental measurement device 100, sequentially installing a first component 101 and a second component 102 to be detected into the restraint tube 5 from the upper surface of the experimental tool, and when a sample is installed, taking care that the detected rough surface of the first component 101 faces upwards, the detected rough surface of the second component 102 faces downwards, and the two rough surfaces jointly form a detected contact pair;
step two: the adjusting bolt (namely the second force application member 6) is arranged, and the contact pair to be measured is adjusted to an experimental measurement area;
step three: fixedly mounting the experimental measurement device 100 with the experimental component 10 mounted thereon on a stage 7 of an x-ray CT apparatus, and defining i to be 0;
step four: applying a pressure load F to the contact interface by tightening the loading bolt (i.e. said first force applying member 2)i+1；(F1<F2<F3<F4<…)；
Step five: the controller 14 is operated to control the radiation source 8 to emit x-rays, and the x-rays penetrate through a sample to be measured and are measured and recorded by the radiation detector 9;
step six: the controller 14 is operated to control the object stage 7 to rotate to a new position by a preset angle;
step seven: repeating the fifth step and the sixth step until the object stage 7 rotates for one circle;
step eight: the measured signals of all the angular positions are processed by the controller 14, and the pressure load F of the experimental part 10 is accurately reconstructed1A three-dimensional model under influence;
step nine: repeating the fifth step and the eighth step until a three-dimensional model of the experimental part 10 under the action of all pressure loads is measured;
step ten: and (3) obtaining the evolution rule of the contact area and the contact gap between the two non-transparent rough surfaces along with the contact pressure through data processing.
The experimental equipment of the embodiment can be an x-ray CT (computed tomography) equipment, can realize observation of the contact process between two surfaces on the basis of an x-ray computed tomography technology, can measure and reconstruct the three-dimensional morphology of the rough surface in a contact state by utilizing the experimental equipment, and accurately and clearly observes the contact area and the size and the distribution of the contact gap between two interfaces. The method can accurately measure the evolution rule of the contact area and the contact gap between two non-transparent rough surfaces along with the contact pressure, and provides a more effective method for scientific research in the fields of friction, abrasion, lubrication, sealing and the like and experimental detection of the contact behavior of the rough surfaces in actual production.
As shown in fig. 3, an experimental measurement method applied to the above experimental apparatus is further provided in the embodiment of the present application, including:
The experimental component comprises a first component and a second component, when the experimental component is installed, the second force application piece of the experimental measurement device needs to be detached, and the first component and the second component to be detected are sequentially installed from the end part of the restraint tube of the experimental measurement device, wherein the measured rough surface of the first component faces upwards, the measured rough surface of the second component faces downwards, and the two rough surfaces jointly form a measured contact pair; and adjusting the position of the experimental part to an experimental measurement area through a second force application member for emitting rays from the ray source. After the experimental part is assembled, the experimental measurement device is assembled on an objective table of the experimental equipment, and the pressure sensor is pressurized by utilizing the first force application piece of the experimental measurement device, so that the experimental part is subjected to the pressure transmitted by the loading rod, and the ray source is controlled to emit rays.
and measuring and recording the rays emitted by the ray source by the ray detector after penetrating through the experimental part to obtain measurement data.
And 303, obtaining the measurement result of the experimental part according to the measurement data.
And the controller processes the measurement data to obtain the evolution rule of the contact area and the contact gap between the two non-transparent rough surfaces along with the contact pressure.
Wherein, the pressure applied by the first force applying part to the pressure sensor is increased linearly. For example: the pressure applied to the experimental part by the first force applying part is as follows: fi +1, F1< F2< F3< F4< …; wherein i is 0.
By measuring the contact area and the contact clearance of the rough surfaces of the first component and the second component under different pressures, the evolution rule of the contact area and the contact clearance along with the contact pressure can be obtained.
Optionally, after the controlling the radiation source to emit radiation, the method further includes: controlling the objective table to rotate by a preset angle at preset time intervals; the acquiring of the measurement data of the ray detected by the ray detector comprises: and acquiring the measurement data of the ray detector when the objective table rotates to different angles.
The preset angle is set according to the requirement, the smaller the preset angle is, the more the measurement times are, and the higher the accuracy of the obtained measurement result is. And the ray detector obtains one measurement data every time the objective table rotates once until the objective table rotates for a circle.
Specifically, obtaining a measurement result of the experimental part from the measurement data includes: generating three-dimensional models of the experimental part under different pressures according to the measurement data; processing data according to the three-dimensional model to obtain the incidence relation between the experimental part and pressure change; wherein, the correlation between the experimental part and the pressure change is as follows: the contact area and the contact gap between the rough surfaces of the first part and the second part in the experimental part are along with the evolution rule of the pressure change.
After the objective table rotates for one circle, the controller obtains a plurality of measurement data, and the measurement signals of all angle positions are processed according to the measurement data, so that the pressure load F of the experimental component can be accurately reconstructed1A three-dimensional model under influence; repeating the above steps for the experimental partAnd applying different pressure loads, and obtaining the three-dimensional model of the experimental part under the action of different pressures by the controller. The controller processes data of the three-dimensional model, observation of a contact process between two rough surfaces can be achieved, the three-dimensional appearance of the rough surfaces in a contact state can be measured and reconstructed, and the size and distribution of the contact area and the contact gap between the two rough surfaces can be accurately and clearly observed, so that the evolution rule of the contact area and the contact gap between the two non-transparent rough surfaces along with the contact pressure is obtained.
The embodiment of the invention can realize the observation of the contact process between the two surfaces, measure and reconstruct the three-dimensional morphology of the rough surface in the contact state, and accurately and clearly observe the contact area between the two interfaces and the size and the distribution of the contact gap. The method can accurately measure the evolution rule of the contact area and the contact gap between two non-transparent rough surfaces along with the contact pressure, and provides a more effective method for scientific research in the fields of friction, abrasion, lubrication, sealing and the like and experimental detection of the contact behavior of the rough surfaces in actual production.
It should be noted that the method is an experimental measurement method applied to the experimental equipment, and all implementation manners of the experimental equipment are applicable to the embodiment of the method, and the same technical effect can be achieved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (13)
1. An experimental measurement device, comprising:
the fixing part (1) is provided with a mounting groove (11), and a first through hole is formed in the bottom of the mounting groove (11);
the first force application piece (2) penetrates through the first through hole, and the first end of the first force application piece (2) extends towards the direction far away from the installation groove (11);
a first surface of the pressure sensor (3) is abutted with a first end of the first force application member (2), a second surface of the pressure sensor (3) is abutted with a loading rod (4), and a constraint pipe (5) is sleeved outside the loading rod (4);
the second force application piece (6) is arranged at one end, away from the pressure sensor (3), of the restraint tube (5) and extends towards the interior of the restraint tube (5);
an accommodating space is formed between the loading rod (4) and the second force application part (6) in the restraint tube (5).
2. The experimental measuring device according to claim 1, characterized in that said fixed part (1) comprises: the device comprises a base (12) and a cross beam (13) fixedly connected with the base (12);
the base (12) is provided with a second through hole;
the cross beam (13) is provided with a first groove, and the opening of the first groove faces the base (12);
the second through hole is communicated with the first groove to form the mounting groove (11).
3. The experimental measuring device according to claim 1, wherein, in a case where an experimental component (10) is installed in the accommodating space, the loading rod (4) abuts against one end of the experimental component (10), and the second force application member (6) abuts against the other end of the experimental component (10).
4. The experimental measuring device according to claim 1, characterized in that the loading rod (4) comprises: the bearing part and the rod part are connected with the bearing part;
the force bearing part is in contact connection with the second surface of the pressure sensor (3), and the rod part and the first force application part (2) are located on the same axis.
5. The experimental measuring device according to claim 4, characterized in that the area of the end surface of one side of the force bearing part facing the pressure sensor (3) is the same as the area of the cross section of the pressure sensor (3) in the direction perpendicular to the axis.
6. The experimental measuring device according to claim 1, characterized in that the pressure sensor (3) is fixedly connected with the fixing part (1).
7. Laboratory measuring device according to claim 1, characterized in that the restraining tube (5) is fixedly connected with the fixing part (1);
the first end of the first force application part (2), the pressure sensor (3) and the loading rod (4) are sleeved on the restriction pipe (5).
8. An experimental setup characterized in that it comprises an experimental measurement device according to any one of claims 1-7, the experimental setup further comprising:
an object stage (7) on which a fixed portion (1) of the experimental measurement device (100) is mounted;
the device comprises a ray source (8) and a ray detector (9), wherein rays emitted by the ray source (8) penetrate through an experimental part (10) in the accommodating space and are transmitted to the ray detector (9);
the controller (14) is respectively connected with the objective table (7), the ray source (8) and the ray detector (9);
the controller (14) controls the radiation source (8) to emit radiation, the radiation detector (9) receives and measures the radiation, and the controller (14) acquires measurement data of the radiation detector (9).
9. Laboratory apparatus according to claim 8, characterized in that the laboratory part (10) comprises a first part (101) and a second part (102);
when the experimental part (10) is assembled to the accommodating space of the experimental measuring device (100), the rough surface of the first part (101) is in contact with the rough surface of the second part (102).
10. An experimental measurement method applied to the experimental equipment of any one of claims 8 to 9, comprising:
an experimental part is arranged in the accommodating space of the experimental measuring device, and the ray source is controlled to emit rays under the condition that the first force application part applies pressure to the pressure sensor;
acquiring measurement data of the rays detected by a ray detector;
and obtaining the measurement result of the experimental part according to the measurement data.
11. The experimental measurement method of claim 10, wherein the first force applying member applies a linear increase in pressure to the pressure sensor.
12. The experimental measurement method of claim 10, wherein after controlling the radiation source to emit radiation, further comprising:
controlling the objective table to rotate by a preset angle at preset time intervals;
the acquiring of the measurement data of the ray detected by the ray detector comprises:
and acquiring the measurement data of the ray detector when the objective table rotates to different angles.
13. The experimental measurement method of claim 10, wherein obtaining the measurement of the experimental component from the measurement data comprises:
generating three-dimensional models of the experimental part under different pressures according to the measurement data;
processing data according to the three-dimensional model to obtain the incidence relation between the experimental part and pressure change;
wherein, the correlation between the experimental part and the pressure change is as follows: the contact area and the contact gap between the rough surfaces of the first part and the second part in the experimental part are along with the evolution rule of the pressure change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010766674.8A CN114062244A (en) | 2020-08-03 | 2020-08-03 | Experiment measurement device, experiment equipment and experiment measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010766674.8A CN114062244A (en) | 2020-08-03 | 2020-08-03 | Experiment measurement device, experiment equipment and experiment measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114062244A true CN114062244A (en) | 2022-02-18 |
Family
ID=80231532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010766674.8A Pending CN114062244A (en) | 2020-08-03 | 2020-08-03 | Experiment measurement device, experiment equipment and experiment measurement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114062244A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073917A (en) * | 1989-11-22 | 1991-12-17 | U.S. Philips Corporation | X-ray examination apparatus |
| CN101738403A (en) * | 2009-12-25 | 2010-06-16 | 中国矿业大学(北京) | Automatic loading system for industrial CT experiment table |
| CN201876396U (en) * | 2010-12-03 | 2011-06-22 | 西安交通大学 | Measuring device of static normal direction contact stiffness of junction plane |
| CN103913385A (en) * | 2014-04-02 | 2014-07-09 | 西安交通大学 | Comprehensive experiment table for measuring normal and tangential contact rigidity of mechanical junction surface |
| CN104122276A (en) * | 2014-07-28 | 2014-10-29 | 重庆大学 | Loadable industrial CT (computed tomography) detection device |
| CN107228878A (en) * | 2017-06-15 | 2017-10-03 | 天津大学 | A kind of measuring method of fixed combinating surface thermal contact resistance |
| CN109580365A (en) * | 2018-10-19 | 2019-04-05 | 中国科学院地质与地球物理研究所 | High energy acclerator CT rock mechanics testing system |
| CN111351703A (en) * | 2020-03-23 | 2020-06-30 | 北京工业大学 | Skeletal mechanics loading tester capable of synchronous CT imaging |
-
2020
- 2020-08-03 CN CN202010766674.8A patent/CN114062244A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073917A (en) * | 1989-11-22 | 1991-12-17 | U.S. Philips Corporation | X-ray examination apparatus |
| CN101738403A (en) * | 2009-12-25 | 2010-06-16 | 中国矿业大学(北京) | Automatic loading system for industrial CT experiment table |
| CN201876396U (en) * | 2010-12-03 | 2011-06-22 | 西安交通大学 | Measuring device of static normal direction contact stiffness of junction plane |
| CN103913385A (en) * | 2014-04-02 | 2014-07-09 | 西安交通大学 | Comprehensive experiment table for measuring normal and tangential contact rigidity of mechanical junction surface |
| CN104122276A (en) * | 2014-07-28 | 2014-10-29 | 重庆大学 | Loadable industrial CT (computed tomography) detection device |
| CN107228878A (en) * | 2017-06-15 | 2017-10-03 | 天津大学 | A kind of measuring method of fixed combinating surface thermal contact resistance |
| CN109580365A (en) * | 2018-10-19 | 2019-04-05 | 中国科学院地质与地球物理研究所 | High energy acclerator CT rock mechanics testing system |
| CN111351703A (en) * | 2020-03-23 | 2020-06-30 | 北京工业大学 | Skeletal mechanics loading tester capable of synchronous CT imaging |
Non-Patent Citations (2)
| Title |
|---|
| FEIKAI ZHANG ET AL.: "A discussion on the capability of X-ray computed tomography for contact mechanics investigations", 《TRIBOLOGY INTERNATIONAL》, pages 1 - 9 * |
| 任万滨 等: "接触面原位光学观测方法的初步研究", 《电工材料》, pages 35 - 38 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6718820B2 (en) | Apparatus for indentation test and method for measuring mechanical properties using it | |
| KR100418700B1 (en) | Ball indenter based on FEA solutions for property evaluation | |
| CN108204876B (en) | Device and method for detecting pretightening force in real time in bolt assembly process | |
| US6721667B2 (en) | Method and system for measuring properties of deformable material specimens | |
| CN109374659B (en) | Positioning method of short-wavelength X-ray diffraction test sample | |
| EP0251698A2 (en) | Boresonic inspection system | |
| Croft et al. | Strain field and scattered intensity profiling with energy dispersive x-ray scattering | |
| CN109099972A (en) | Bottom sediment in situ environment monitors system | |
| CN108592731A (en) | A kind of micrometer Intelligent calibration system and detection method | |
| Fila et al. | Utilization of dual-source X-ray tomography for reduction of scanning time of wooden samples | |
| CN102608144A (en) | Device and method for measuring three-dimensional distribution of residual stress in metal microstructure | |
| Kourra et al. | Metrological study of CFRP drilled holes with x-ray computed tomography | |
| EP0657621B1 (en) | System for measuring three-dimensional displacement | |
| CN114062244A (en) | Experiment measurement device, experiment equipment and experiment measurement method | |
| CN207662557U (en) | Pretightning force real-time detection apparatus during a kind of bolts assemblies | |
| US6289595B1 (en) | Method and device for measuring workpieces having internal and/or external screw thread or similar grooves | |
| Valentini et al. | An automatic system for measuring residual stresses by Ring-core method | |
| KR102257004B1 (en) | Assessment system of stress directionality and residual stress based on indentation surface displacement | |
| CN108195671B (en) | In-situ tension and compression device based on computed tomography | |
| KR101284375B1 (en) | X-ray rotation device for wood examination | |
| KR102185481B1 (en) | Measuring method of non-destructive type concrete strength or crack using ultrasonic method | |
| Ayoubi et al. | Determination of the stress distribution in timber elements reinforced with self-tapping screws using an optical metrology system | |
| CN111006812A (en) | Stress test precision calibration method and device | |
| RU2210755C2 (en) | Procedure determining parameters of indentation made in surface of metal tested for hardness and facility for its implementation | |
| US20230314346A1 (en) | A device for testing a flat plate-shaped material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |