Abstract
Unit brackets attached on a cross member and subjected to random loads often fail due to self-vibration. To prevent such failures, it is necessary to understand the fatigue failure mode and to evaluate the fatigue life using test or analysis techniques. The objective of this study is to develop test specifications for components, which are applicable to predict fatigue life at the stage of initial product design, for the unit brackets by using a vibration fatigue technique. For this objective, the necessity of a fatigue analysis considering resonant effect was reviewed. Also, a series of vibration fatigue analyses were carried out by changing the acceleration’s direction and magnitude. Then, a methodology was proposed to determine the optimum vibration fatigue test specification of the component, which gives an equivalent failure mode with the vehicle test condition.
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This paper was recommended for publication in revised form by Associate Editor Jeonghoon Yoo
Seong In Moon received his B.S., M.S. and Ph. D. degrees in mechanical design in 1999, 2001 and 2005, respectively from Sungkyunkwan University, Korea. He worked for Hyundai Motors as a senior researcher from 2005 to 2009. He is currently a senior researcher in Korea Atomic Energy Research Institute. His research interests are durability evaluation of mechanical system and nuclear fuel cycle facility design.
Il Je Cho received his B.S. and M.S. degrees in nuclear engineering in 1996, 1998 from Hanyang University, Korea. He is currently a senior researcher in Korea Atomic Energy Research Institute. His research interests are nuclear fuel cycle facility design (hot-cell), management of spent fuel, and safety issues of nuclear fuel cycle.
David Yoon (aka. Sung Sik Yoon) received his B.S from Busan National University in 1995. He worked as an expert in the Data Acquisition and Signal Analysis at a company himself and his associates established. He is currently runs Famtech, a CAT/CAE durability solution provider in Korea, as CEO and Director of the Technical Division.
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Moon, SI., Cho, IJ. & Yoon, D. Fatigue life evaluation of mechanical components using vibration fatigue analysis technique. J Mech Sci Technol 25, 631–637 (2011). https://doi.org/10.1007/s12206-011-0124-6
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DOI: https://doi.org/10.1007/s12206-011-0124-6