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Compound stress environment testing system of contact point material

A technology that integrates stress and environmental experiments, applied in the direction of testing wear resistance, etc., can solve the problems of inability to complete the detection of fretting wear performance, failure of electrical connectors, etc., to achieve the effect of stable work and improved detection accuracy

Inactive Publication Date: 2014-02-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problem that in the existing detection process of fretting wear performance, because the electrical connector needs to withstand long-term high-frequency vibration and repeated impact of comprehensive stress, the electrical connector fails, and the detection of fretting wear performance cannot be completed. , a comprehensive stress environment experiment system for contact materials is proposed

Method used

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  • Compound stress environment testing system of contact point material
  • Compound stress environment testing system of contact point material
  • Compound stress environment testing system of contact point material

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Experimental program
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specific Embodiment approach 1

[0029] Specific implementation mode one, combination figure 1 , figure 2 with image 3 To illustrate this specific embodiment, the contact material comprehensive stress environment experiment system described in this specific embodiment includes a vacuum chamber, a micro-movement clamping mechanism, a fixed clamping mechanism and a control circuit,

[0030] The vacuum chamber is composed of a chassis 11 and a vacuum cover 20. The vacuum cover 20 is fixedly connected to the chassis 11 and forms a closed space with the chassis 11, the space being a vacuum chamber; the chassis 11 is provided with a sealed aviation plug-in 18. Pressure transmitter installation through hole, air valve installation through hole and fixed clamping mechanism installation through hole;

[0031] The micro-movement clamping mechanism is located in the vacuum chamber, and the micro-movement clamping mechanism is fixed at the center of the chassis 11. The micro-movement clamping mechanism is composed of a lower...

specific Embodiment approach 2

[0043] Specific embodiment two, the difference between this specific embodiment and the contact material comprehensive stress environment experiment system described in specific embodiment one is that the chassis 11 and the vacuum cover 20 are sealed by a silicone gasket, and the chassis 11 and the vacuum cover 20 is fixedly connected by a plurality of C-type clamps 21.

specific Embodiment approach 3

[0044] Embodiment 3 The difference between this embodiment and the contact material comprehensive stress environment experiment system described in embodiment 1 is that it also includes a gas valve 17 fixedly installed in the valve installation through hole One end of the air valve 17 is connected to the vacuum chamber, and the other end of the air valve 17 is connected to the suction port of the vacuum pump 38.

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Abstract

The invention discloses a compound stress environment testing system of a contact point material, relating to the technical field of abrasion testing, and solving the problems that an electric connector fails and further the detection of fretting wear performance can not be completed because the electric connector needs to bear long-term high-frequency vibration and repeated impaction of a compound stress in an existing process of detecting the fretting wear performance. The compound stress environment testing system comprises a vacuum chamber, a jogging clamping mechanism, a fixed clamping mechanism and a control circuit, wherein the jogging clamping mechanism is arranged in the vacuum chamber, a friction is formed between the jogging clamping mechanism and the fixed clamping mechanism through high-frequency vibration, and a control circuit respectively detects a friction force between samples, a static pressure, a temperature and a gas pressure in the vacuum chamber. The compound stress environment testing system is suitable for detecting the fretting wear performance.

Description

Technical field [0001] The invention relates to the technical field of wear testing. Background technique [0002] Electrical connectors are susceptible to the external environment and working conditions. Mechanical vibration acts on the pin jack positions in the electrical connector through the structural components of the electrical connector, causing friction and relative displacement of the contact parts, resulting in contact fretting The phenomenon of wear, fretting corrosion, and fretting fatigue will lead to the gradual degradation of electrical contact performance and even functional failure. Therefore, products such as electrical connectors for automobiles, aerospace and electronic equipment need to meet the requirements of reliable operation in a mechanical environment. [0003] Fretting wear refers to the wear phenomenon caused by the relative movement of periodic small amplitude under the action of structural vibration or alternating stress on the contact interface of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56
Inventor 任万滨满思达董宝旭潘存发王鹏翟国富
Owner HARBIN INST OF TECH
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