This study has successfully demonstrated a novel tensile testing approach to mount a thin film test specimen onto a MEMS instrument using microfabrication processes. The MEMS instrument consists of a thermal actuator, differential capacitance sensor, and supporting spring. The thermal actuator applies a tensile load on the test specimen to characterize the Young’s modulus and the residual stress of the thin film. As compare with the existing approaches, the problems and difficulties resulting from the alignment and assembly of a thin film test specimen with the testing instrument can be prevented. Furthermore, the parylene passivation technique with the MEMS fabrication process allows the user to change the test materials easily. In application, the present approach has been employed to determine the Young’s modulus and the residual stress of Au and Al films.
- Design Engineering Division and Computers in Engineering Division
A Novel Micro Tensile Testing Instrument With Replaceable Testing Specimen of Gold and Aluminum by Parylene Passivation Technique
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Lau, Y, Hocheng, H, Chen, R, & Fang, W. "A Novel Micro Tensile Testing Instrument With Replaceable Testing Specimen of Gold and Aluminum by Parylene Passivation Technique." Proceedings of the ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 4: 20th International Conference on Design Theory and Methodology; Second International Conference on Micro- and Nanosystems. Brooklyn, New York, USA. August 3–6, 2008. pp. 743-747. ASME. https://doi.org/10.1115/DETC2008-49846
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