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Thermal Fatigue Life Estimation and Fracture Mechanics Studies of Multilayered MEMS Structures Using a Sub-Domain Approach
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, UK
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, UK
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, UK
- 1 Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, UK
- 2 Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, UK
- 3 Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, UK
World Journal of Mechanics·Volume 02 (2012)·Pages 61–76·Published 26 April 2012·DOI10.4236/wjm.2012.22008
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Abstract
This paper is concerned with the application of a Physics of Failure (PoF) methodology to assessing the reliability of Micro-Electro-Mechanical-System (MEMS) switches. Numerical simulations, based on the finite element method (FEM) using a sub-domain approach, were performed to examine the damage onset (e.g. yielding) due to temperature variations and to simulated the crack propagation different kind of loading conditions and, in particular, thermal fatigue. In this work remeshing techniques were employed in order to understand the evolution of initial flaws due, for instance, to manufacturing processes or originated after thermal fatigue.
KeywordsSub-DomainFEMThermal FatigueAdaptive Remeshing
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