NDLI: Fault mechanism analysis and accelerate life testing for pneumatic cylinders

Content Provider	IEEE Xplore Digital Library
Author	Chen Juan Ma Jungong Wu Qiang
Copyright Year	2008
Description	Author affiliation: Sch. of Autom. Sci. & Electron. Eng., Beihang Univ., Beijing (Chen Juan; Ma Jungong)
Abstract	This paper focuses on accelerated life test on cylinders for pneumatic industry which sharply shortens the test time to get the reliability evaluation specification and decreases the cost during products development stage. Accelerated tests are valuable tools to get information quickly on life distribution which is achieved by subjecting the test units to conditions that are more severe than the normal ones. After the accelerated life test results are efficiently feedback to the designer, the design defects are exposed and proper material is selected. Long lifetime pneumatic cylinders are selected as the test object. Section I covers the fault mechanism analysis By the failure mode and effect analysis and fault mechanism analysis, the piston and piston pole parking are the weak units as they are movable parts as well as leakage sources which easily result in the cylinders failure. Liquid temperature and operating frequency are chosen as stresses since their accelerating potentials are available for the specific cylinders, then constant double stress life testing spectrum and tests matrix are scheduled and implemented. The extended Arrhenius model is combined based on a theoretical relationship between chemical and physical reaction rates and stresses. Lastly, the complete ALT data is presented by using Weibull distribution and Bartlett verifying method. Estimation for the parameters of Arrhenius model and other characteristics of cylinders population life distribution are done successfully. From the 3-axis graph plotted, the effects of each stress to cylinders can be seen clearly which provide satisfactory results for cylinders researcher and developer.
Starting Page	1694
Ending Page	1699
File Size	811466
Page Count	6
File Format	PDF
ISBN	9781424421701
ISSN	19354576
DOI	10.1109/INDIN.2008.4618376
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-13
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	dual stress accelerated model Pneumatic Cylinders Constant Stress Accelerate Life Testing (ALT)
Content Type	Text
Resource Type	Article

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