Title :
Tri-stress accelerated life test for cylinders
Author :
Xinxue, Sun ; Yongling, Fu ; Guohui, Han ; Mingwu, Sun
Author_Institution :
Sch. of Autom. Sci. & Electr. Eng., Beijing Univ. of Aeronaut. & Astronaut., Zhangjiakou, China
Abstract :
A life-stress model for cylinders was built based on wear fault mechanism, and the test scheme was optimized using temperature, pressure and velocity as acceleration stresses. An accelerated life test for cylinders was designed and implemented. Life eigenvalues at different stress levels were acquired and analyzed. Undetermined parameters of acceleration model were estimated, and life indices under normal stress condition were extrapolated and compared with those from normal stress test. The feasibility of the optimization scheme and the correctness of the acceleration model were verified. Compared with twin-stress accelerated life test for cylinders, the test period was further shortened.
Keywords :
eigenvalues and eigenfunctions; life testing; optimisation; shapes (structures); stress analysis; wear testing; acceleration model; acceleration stress; cylinders; life eigenvalues; life indices; life-stress model; normal stress condition; normal stress test; optimization scheme; pressure; stress level; temperature; test period; test scheme; tri-stress accelerated life test; twin-stress accelerated life test; velocity; wear fault mechanism; Automatic testing; Electronic equipment testing; Engine cylinders; Failure analysis; Life estimation; Life testing; Mathematical model; Measurement units; Stress; Sun; accelerated life test; accelerated model; component; cylinder; optimism design; weibull distribution;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5535699
