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Inventions 2016, 1(1), 4; doi:10.3390/inventions1010004

Residual Strain Measurement Using Wire EDM and DIC in Aluminum

1
Graduate Institute of Manufacturing Technology and Department of Mechanical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
2
Department of Mechanical Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan
3
Iron and Steel Research and Development Department, China Steel, Kaohsiung 81233, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Chien-Hung Liu
Received: 17 December 2015 / Revised: 24 February 2016 / Accepted: 29 February 2016 / Published: 4 March 2016
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Abstract

In this paper, a technique that combines digital image correlation and wire electrical discharge machining for the measurement of the residual strain is presented. The significant potential benefits of this work include noncontact, high-speed, and online measurement. A ring-core-based groove in the surface of the specimen is cut to release the residual stresses present inside the core. The deformation due to these stresses can be measured by digital image correlation to measure the relieved strains. Moreover, the sizes of the reference areas on the specimens and the tracks of these areas after wire electrical discharge machining are investigated. The proposed method is applied to six different specimens to characterize their relieved strains. View Full-Text
Keywords: wire electrical discharge machining; residual strain measurement; digital image correlation; ring-core method wire electrical discharge machining; residual strain measurement; digital image correlation; ring-core method
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ho, C.-C.; Chang, Y.-J.; Hsu, J.-C.; Kuo, C.-L.; Kuo, S.-K.; Lee, G.-H. Residual Strain Measurement Using Wire EDM and DIC in Aluminum. Inventions 2016, 1, 4.

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