Temperature Depression/Reliability Testing

6. Temperature and low pressure test:
Temperature / high altitude (low pressure) composite test (low pressure test (rapid pressure test, height test, high altitude test, rapid pressure change)) main purpose to simulate no pressure control air transport environment, avionics, products have high pressure, motor or air tightness considerations and product use installed in high latitude countries area environment. Temperature and low pressure test is to put the test sample into the test box (chamber), and then reduce the air pressure in the box (chamber) to the value specified by the relevant standard, and maintain the specified duration of the test. Its purpose is mainly to determine the adaptability of components, equipment or other products to low pressure environment in storage, transportation and use. The test is suitable for the products transported in the aircraft cargo compartment, the products used on the plateau and the air products where the pressure drops rapidly after the aircraft injury. The purpose of the test is to test the performance of the product in the low pressure environment and the impact of the rapid pressure decline on the product performance. In the test application, it is usually divided into transportation test and operation test environment test. The transportation environment usually takes low temperature air pressure reduction as the verification condition, and the operating environment takes high / low temperature air pressure reduction as the verification condition. Temperature / air pressure common effect: the air pressure decreases the air or insulation material insulation strength decreases, produce the discharge, the dielectric loss increase, ionization, local overheating caused by material deformation or electrical