ACCELERATED TESTING IN HYDRAULIC COMPONENT OPERATIONAL LIFE TEST

抄録

To conduct the reliability test or functional life test for hydraulic components usually takes more time than one can predict and consumes more resource than one can image, especially for those with higher reliability and simpler components. This paper is presented to discuss the theory and method of accelerated testing, which has been widely used in electronics field, and to discuss the factors that affect the functional life of hydraulic components as well as the failure mode. The advantage and disadvantage of accelerating testing will be discussed. The author also intends to point out the importance of failure definition and accelerating model in the accelerated tests. Several accelerating models such as Arrhenius model and Inverse Power model will be discussed. The degradation process of metering edge is taken as the research subject to propose the applicable accelerating model. The possibility of using contaminated hydraulic fluid as an accelerating factor is discussed.