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�������պ����ѧѧ�� 2009, Vol. 35 Issue (4) :407-410    DOI:
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1. �������պ����ѧ ����ϵͳ����ϵ, ���� 100191;
2. ������ѧ ��е�������Զ���ѧԺ, ���� 110004
Failure rate model of components under random repeated load
Wang Zheng1, Kang Rui1, Xie Liyang2*
1. Dept. of System Engineering of Engineering Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110004, China

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Abstract�� The models for calculating the reliability and failure rate of components were developed with the order statistic theory and load-stress interference model when the life of components was measured by the times of random load action. The failure mechanism of components when random load acts for multiple times was analyzed and from the statistic meaning of random load action, the reliability model of components under random repeated load was built with the order statistic. Further, the model for calculating the failure rate of a component was derived, and the relationship between reliability and times of load action and that between failure rate and times of load action were studied. The model proposed can be applied to direct ESS (environmental stress screening test) and other reliability experiments for products.
Keywords�� times of load action   order statistic   reliability   failure rate   load-strength interference     
Received 2008-04-24;
About author: �� ��(1981-),��,ɽ��������,��ʿ��,wzneu@126.com.
�� ��, �� ��, л����.����غɶ�������µ����ʧЧ�ʼ���ģ��[J]  �������պ����ѧѧ��, 2009,V35(4): 407-410
Wang Zheng, Kang Rui, Xie Liyang.Failure rate model of components under random repeated load[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(4): 407-410
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2009/V35/I4/407
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