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Electrical connector fretting wear detection system and method based on infrared thermography technology

An electrical connector, infrared thermal imaging technology, applied in the direction of optical testing flaws/defects, etc., can solve problems such as inability to perform real-time detection, sample damage, etc., and achieve the effect of saving sample consumption, fast speed, and continuous testing and testing.

Pending Publication Date: 2018-09-14
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this detection method is used to observe the distribution of wear debris, it needs to be carried out after each wear test is completed, and because the sample is prepared by slicing, the sample will be destroyed after each test, and the test on the same sample cannot be continued, that is Each sample can only be tested for wear once, and real-time testing is not possible

Method used

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  • Electrical connector fretting wear detection system and method based on infrared thermography technology
  • Electrical connector fretting wear detection system and method based on infrared thermography technology
  • Electrical connector fretting wear detection system and method based on infrared thermography technology

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Experimental program
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Effect test

preparation example Construction

[0047] 1) Preparation of the tested part: Remove the metal shell of the electrical connector, saw off the black insulator outside one of the sockets of the electrical connector to expose a complete contact reed, and then in the contact reed that needs to be photographed Coat the surface with a layer of black ink and dry it or paste black tape, or put the thermal imaging camera and the electrical connector in the same dark box; weld the wires on the electrical connector after the above treatment, and confirm that the electrical connector has reached After the thermal equilibrium state, install the electrical connector on the plug-in device for plug-in test;

[0048] 2) Place the electrical connector being plugged and unplugged horizontally in front of the infrared thermal imager, connect the circuit, adjust the output current of the DC stabilized current source, and make the electrical connector reach a normal working state;

[0049] 3) During detection, set the parameters of t...

Embodiment 1

[0053] In this embodiment, the model of the thermal imaging camera is Shanghai Juge MAG13, and the thermal imaging processing software installed on the computer is ThermoX.

[0054] This embodiment provides a system and method for detecting fretting wear of electrical connectors based on infrared thermal imaging technology, and the specific implementation steps are as follows:

[0055] 1) Preparation of the tested part: The metal shell needs to be removed from the electrical connector, and about one-third of the black insulator outside one of the electrical connector jacks is sawed off to expose a complete contact reed, and then photographed when needed The surface of the contact reed is coated with a layer of black ink and dried; the electrical connector after the above treatment is welded to the wire, and after confirming that the electrical connector has reached a thermal equilibrium state, the electrical connector is installed on the plugging device for plugging. Pulling o...

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Abstract

The invention relates to an electrical connector fretting wear detection system and method based on an infrared thermography technology. The system comprises an insertion and extraction device used for making a to-be-detected electrical connector generate wear debris through an insertion and extraction test and a detection device used for obtaining an infrared thermogram in the insertion and extraction test of the to-be-detected electrical connector; the insertion and extraction device comprises a clamping unit; the clamping unit comprises a pin clamp used for clamping a pin without shell of the electrical connector and a jack clamp used for clamping a jack of the electrical connector, and the jack clamp and the pin clamp are installed in an aligned mode; the jack clamp is installed at thefront end of a mobile platform; the detection device comprises a direct current voltage and current stabilization source, a thermal infrared imager used for shooting the infrared thermogram in the insertion and extraction test of the to-be-detected electrical connector and a computer, the thermal infrared imager is connected with the computer, and the thermal infrared imager right faces the to-be-detected electrical connector. By means of the detection system, nondestructive real-time detection can be conducted on contact elements, and the wear debris distributing condition between the contact elements of the electrical connector can be visually, fast and accurately positioned.

Description

technical field [0001] The invention relates to the technical field of electrical connector state detection, in particular to a system and method for detecting fretting wear of an electrical connector based on infrared thermal imaging technology. Background technique [0002] Electrical connectors are one of the important electromechanical components used to realize electrical and signal on-off. Due to the characteristics of high quality and high reliability, electrical connectors are widely used in aerospace, national defense, electronic communication and other fields. In addition to meeting the general performance requirements of electrical connectors, the particularly important requirement is that electrical connectors must achieve good contact, reliable operation, and easy maintenance. Their reliability directly affects the normal operation of electrical and electronic equipment. When the electrical connector is stored, transported and operated, it will be accompanied b...

Claims

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Application Information

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IPC IPC(8): G01N21/88
CPCG01N21/88
Inventor 骆燕燕马旋
Owner HEBEI UNIV OF TECH
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