Researches on Lifetime Modeling of LED luminaires

摘要

The temperature and vibration have great influence on the properties and materials of LED luminaires. Therefore, the bi-stress accelerate life testing method under temperature and vibration stress was designed and demonstrated. Based on the large amounts of experimentally obtained data and Arrhenius function, life models of LED luminaires were built rapidly by using mathematical reasoning (least square method and unary linear regression method). The results showed that the method we mentioned can sharply reduce the test life test and the life curve of LED luminaires obey to exponential model.