What are the testing methods for automotive wiring harnesses What are the testing indicators for automotive wiring harnesses?

In today's increasingly intelligent automobiles, automobile wiring harness is the key to the electrical system of the whole vehicle. Because of the connection of the automobile wiring harness, all kinds of electronic instruments on the automobile can operate normally and realize their respective functions. Automotive wiring harness is a multi-component cluster product. The components that need to be tested include: wires, sheaths, terminals, fastening tapes, heat shrinkable tubes, sub-sensitive tapes, copper braided wires and sealing rings, etc. So what are the testing methods and testing indicators of automotive wiring harness?

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1. What are the detection methods of automobile wiring harness? 1. Automobile wiring harness tensile test If the connection between the transmission line and the wiring harness terminals is not tight enough due to its own quality problems, the wiring harness will break; Secondly, the appearance of the wiring harness transmission line is intact, but the internal copper core has been disconnected from the terminal block. Both of these situations will lead to the functional failure of the automobile wiring, so it is necessary to conduct tensile test on the automobile wiring harness. During the test, if the insulation layer of the transmission line cable gradually becomes thinner, it can be determined that the transmission line has been broken; If the internal circuit is open, it is necessary to further judge the internal state by X-ray imaging. 2. X-ray inspection of automotive wiring harness. The X-ray inspection image of automotive wiring harness can more intuitively observe the process defects of the solder joints inside the wiring harness, such as missing solder, tin slag, etc. These defects will directly lead to the short circuit of the wiring harness and endanger the safety of the overall performance of the automobile. 3. Automotive wiring harness touch test Under normal circumstances, when the wiring harness is in poor contact, it is likely to be caused by the connector. After the connector is connected, the electrical equipment suddenly works normally or abnormally, indicating that the connector is faulty and needs to be repaired. 2. What are the testing indicators of automotive wiring harness? 1. Electrical performance: rated voltage, rated current, temperature rise, contact resistance, insulation resistance, electrical strength, current cycle resistance, etc. 2. Mechanical properties: insertion force, pull-out force, terminal retention force, hitch strength, unlocking force, mechanical impact resistance, etc. 3. Environmental performance: air tightness, waterproofing, salt spray resistance, heat aging resistance, oil resistance, etc.

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