Abstract
Highly accelerated life testing (HALT) is a critical method that combines thermal loadings and a series of vibration step stresses in testing the reliability of electronic products. HALT typically utilizes multiple hammers as the driving force of vibration excitations. In this study, we investigated an existing HALT system and the improved design of the hammer system. We also examined the responses of each table to a variety of effects, such as different combinations of hammers and variations in the impact force angles from the hammers to the table. The investigation begins with a theoretical analysis of the forces of impact exerted by the hammers on the table of the HALT system. Thereafter, ANSYS Workbench software is used to build the simulation model that will verify the accuracy of the theoretical results. Finally, the accelerations of the table in an actual HALT system are measured and analyzed for comparison with the foregoing results.
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Recommended by Editor Yeon June Kang
Y. S. Chen is an Associate Professor at the Department of Mechanical Engineering, Yuan-Ze University, Taoyuan, Taiwan. He received his Ph.D. in mechanical engineering from the University of Maryland, College Park. He has worked closely with the industry in areas related to the mechanical reliability assessment of electronic products, including vibration analysis, structural analysis, packaging design, and material properties investigation.
Le Hong Chuong received his B.S. and M.S. degrees in Mechanical Engineering from the National University of Civil Engineering, Vietnam, in 2000 and 2006, respectively. He is currently pursuing his Ph.D. at the Department of Mechanical Engineering, Yuan-Ze University, Taiwan. His current research interests include electronic packaging analysis, computer-aided engineering analysis, mechanical system design, and automotive engineering.
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Chen, YS., Chuong, L.H. Efficiency improvement of the highly accelerated life testing system by using multiple hammers. J Mech Sci Technol 28, 4815–4831 (2014). https://doi.org/10.1007/s12206-014-1102-6
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DOI: https://doi.org/10.1007/s12206-014-1102-6