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Abstract
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Accelerated life testing (ALT) has become an important method for rapid assessment of product reliability, reduction of test time and cost. In this paper, a multi-parameter coupling simulation ALT method is proposed. It is applied to study the synchronization belt of the blood cell analyzer. First, the acceleration factor of each parameter is determined by the accelerated life theory. Next, velocity and friction are analyzed by dynamic simulation. These analysis results are added as boundary conditions to the analysis of environmental variables of temperature and velocity in the synchronous zone. The multi-parameter coupling accelerated life analysis is realized and the operation data are obtained. Then, a fatigue wear ALT rig is built to do the fatigue life test for verifying the feasibility and accuracy of the method. Finally, the Improved-First Order Reliability Method (I-FORM) algorithm is used to assess the reliability of data from coupling simulation test and fatigue wear ALT and do a comparative analysis of these data. It verifies the effectiveness of this method. This method will reduce the time and economic cost of reliability analysis of new production equipment, and provide ideas for multi-parameter variable ALT of equipment.
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