可靠性验证试验（Reliability verification test）.docVIP

可靠性验证试验（Reliability verification test） Reliability verification test 1 overview 1.1 purpose and classification of test The purpose of reliability verification test is to verify whether the product reliability meets the requirements. The reliability verification test is divided into reliability evaluation test and reliability acceptance test according to the nature of the product. The reliability evaluation test is to verify that the design of the new development product meets the requirements of minimum acceptable reliability. Acceptance test is an experiment to determine whether the product meets reliability and quantitative requirements. 1.2 statistical concepts The reliability indicator is a time representation of the performance of the product, it is a random variable, and cannot be tested with instrument, only by sampling or full life statistics. The reliability index of the product is also the reliability target value, which is also called the regulation value in the contract. The test scheme can be theta 0. The reliability threshold value of the product must be reached, which is called the lowest acceptable value in the contract, and the test plan is theta 1. Reliability verification test plan based on statistics, mathematics, and the individual, general, group, sample, sample, random, distribution and so on related statistical concepts. The failure rate of the electronic product in the random failure period of life is constant, which is in accordance with the exponential distribution. Requirement of 1.3 The test outline must be approved by the relevant parties. The statistical test scheme shall be determined by the ordering party in the contract and selected from the relevant standards. The technical status of the test samples shall be approved. The test section shall represent the actual use of environmental conditions. The test shall be conducted under the supervision of the user representative in the authorized laboratory. 2 reliability verification test