Life test is a method to study the life characteristics of products. This method can be carried out by simulating . Life test is one of the most important and basic items in reliability test. It is to put the product under specific test conditions to investigate its failure (damage) change over time. Through the life test, we can understand the product's life characteristics, failure rules, failure rate, average life and various failure . If combined with failure analysis, the main failure mechanism leading to product failure can be further clarified, which can be used as the basis for reliability design, reliability prediction, improvement of new product quality, and determination of reasonable screening and routine (batch guarantee) test conditions. If the test can be carried out by increasing the stress without changing the failure mechanism in order to shorten the test time, this is the accelerated life test. The reliability level of the product can be evaluated , and the reliability level of the new product can be improved through the quality feedback.
