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High-frequency fretting wear tester

A fretting wear and testing device technology, applied in the field of testing and wear testing, can solve problems such as cracks and their propagation trend hazards

Inactive Publication Date: 2012-05-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cracks left by it and its expansion tendency will bring greater harm

Method used

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  • High-frequency fretting wear tester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0017] Embodiment 1: The high-frequency micro-motion wear test device described in this embodiment includes an electric vibration table, a micro-motion clamping mechanism, a wear mechanism, a laser displacement sensor 10, and a signal conditioning and acquisition circuit.

[0018] The electric vibration table is used to provide the micro-amplitude vibration required for testing fretting wear, and the micro-amplitude vibration refers to the sinusoidal vibration with an amplitude of micron level and a frequency of less than 2000Hz;

[0019] The vibrating table surface 12 of the electric vibrating table is fixedly connected with a micro-moving clamping mechanical structure, and the micro-moving clamping mechanical structure is used to clamp the first tested sample 8 to realize micro-amplitude vibration. The micro-moving clamping mechanical structure includes: a pre-pressure structure and a pressure sensor 5, the pre-pressure structure is used to provide a pre-compression force to ...

Embodiment approach 2

[0029] Embodiment 2: This embodiment is a further limitation of the micro-movement clamping mechanical structure in the high-frequency micro-motion wear test device described in the specific embodiment 1. The micro-motion clamping mechanical structure described in this It includes a support plate 1 and a sensor support frame 4, one end of the support plate 1 is fixedly connected with the vibration table surface 12 of the electric vibration table, and the other end of the support plate 1 is away from the vibration table surface 12 of the electric vibration table, and is connected with the pre-vibration table. The pressure structure is fixedly connected. The pre-pressure structure includes a sample slider 7, a sample clamping structure, a spring and a top wire 6. The other end of the support plate 1 is fixedly connected to the sample slider 7. The lower part of the sensor support frame 4 Fixed on the sample slider 7, the vertical through hole of the sample slider 7, the pressure ...

Embodiment approach 3

[0033] Embodiment 3: This embodiment is a further limitation of the wear mechanical structure in the high-frequency fretting wear test device described in the specific embodiment 1. The wear mechanical structure in this embodiment also includes a support angle piece 2, a sample holder Holder, corner piece support block 11 and wear mechanism support plate 13, the bottom of the wear mechanism support plate 13 is fixedly connected with the table body of the electric vibration table, and the top of the wear mechanism support plate 13 is connected with the corner piece support block 11. The bottom is fixedly connected, the top of the corner piece support block 11 is fixedly connected with the support corner piece 2, the installation plane of the support corner piece 2 is parallel to the vibration table surface 12 of the electric vibration table, and the support corner piece 2 is fixed with The laser displacement sensor 10 and the sample holder, one end of the sample holder is the sa...

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PUM

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Abstract

The invention which relates to the technical field of test and concretely relates to the technical field of wear test provides a high-frequency fretting wear tester. According to the tester, an electric vibration table is adopted to provide the fretting needed by the fretting wear test, the vibration table surface of the electric vibration table is fixedly connected with a fretting clamping mechanism for clamping a first test sample to realize the fretting, a precompaction structure is adopted to provide precompaction force for the first test sample, and a pressure sensor is adopted to measure the precompaction force; a wear mechanism is fixedly connected with the table body of the electric vibration table to provide a wear structure which can generate friction with test samples, the upper end surface of a second test sample on the wear mechanism tightly contact the lower end surface of the first test sample, and a frictional force sensor is adopted to measure the frictional force born by the second test sample; a laser displacement sensor is adopted to measure the displacement of the first test sample; and a signal conditioning and acquiring circuit acquires pressure signals and frictional force signals and measures output signals of four electrodes of above two test samples.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to the technical field of wear testing. Background technique [0002] The electrical connector is easily affected by the external environment and working conditions. The mechanical vibration acts on the position of the pin jack through the structural components in the electrical connector, causing friction and relative displacement of the contact part, and the resulting contact fretting. Wear, fretting corrosion, and fretting fatigue will lead to gradual degradation of electrical contact performance or even functional failure. Therefore, products such as electrical connectors for automobiles, aerospace, and electronic equipment must meet the requirements of reliable operation under mechanical environment. [0003] Fretting wear refers to the wear phenomenon caused by periodic micro-amplitude relative motion at the contact interface between two solids under the action of structural ...

Claims

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Application Information

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IPC IPC(8): G01N3/56
Inventor 任万滨马松君王鹏马晓明
Owner HARBIN INST OF TECH
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