发光学报Issue(9)：1143-1153,11.DOI:10.3788/fgxb20143509.1143
基于加速性能退化的 LED 灯具可靠性评估
Reliability Assessment of LED Lamp Based on Acceleration Degradation Test
摘要
Abstract
A rapid reliability evaluation method of LED lamp was proposed based on the acceleration degradation test. In order to evaluate the service life of lamps, the accelerated degradation test (ADT)was conducted under the integrated stress of temperature-electrical, and a general procedure for an accelerated degradation test was used to analyze the useful lifetime of LED lamps under oper-ating conditions through analyzing the lumen maintenance data collected from ADT. The reliability of a type of LED tube was evaluated implementing the approach proposed in this article. The failure criterion was defined as the 70% decrease of the emitted optical power compared with the initial level. The results show that the failure time of a LED tube under operating conditions is about 31 571 h. This designed procedure can evaluate the reliability of LED lamps quickly and effectively. It not only can save the experiment time, but also provide the foundation for evaluating reliability and managing product quality.关键词
LED/加速退化试验/可靠性评估/加速模型Key words
LED/acceleration degradation test/reliability assessment/accelerated model分类
信息技术与安全科学引用本文复制引用
肖承地,刘春军,刘卫东,赵志伟,刘桂平..基于加速性能退化的 LED 灯具可靠性评估[J].发光学报,2014,(9):1143-1153,11.基金项目
广东省科技厅产学研合作项目(2012B091100175) （2012B091100175）
江西省教育厅科学技术研究项目(12717)资助 （12717）
