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本文对MTBF保证试验的内涵和作用及适用性进行了研究,提出该试验适应于批量产品的可靠性验收,也适应在一定前提条件下小子样产品的可靠性验收。在经过环境应力筛选及精确的可靠性预计并满足要求的条件下,该试验使用方风险不大于可靠性鉴定试验使用方风险值。现场统计数据分析表明,通过MTBF保证试验的产品现场使用可靠性水平满足MTBF保证试验所验证的可靠性。
In this paper, the connotation, function and applicability of the MTBF assurance test are studied. It is proposed that the test adapts to the reliability acceptance of the batch products and also meets the reliability acceptance of the small sample products under certain preconditions. After environmental stress screening and accurate reliability prediction and meet the requirements of the test, the use of party risk is not greater than the value of the reliability appraisal test user risk. Analysis of field statistics shows that the reliability of the field use reliability of the MTBF assurance test satisfies the reliability verified by the MTBF assurance test.