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Measurement of Aluminum Edge Stretching Limit Using 3D Digital Image Correlation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2015 by SAE International in United States
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This paper introduces an industrial application of digital image correlation technique on the measurement of aluminum edge stretching limit. In this study, notch-shape aluminum coupons with three different pre-strain conditions are tested. The edge stretching is proceeded by standard MTS machine. A dual-camera 3D Digital Image Correlation (DIC) system is used for the full field measurement of strain distribution in the thickness direction. Selected air brush is utilized to form a random distributed speckle pattern on the edge of sheet metal. A pair of special optical lens systems are used to observe the small measurement edge area. From the test results, it demonstrate that refer to the notched coupon thickness, pre-tension does not affect the fracture limit; refer to the virgin sheet thickness, the average edge stretch thinning limits show a consistent increasing trend as the pre-stretch strain increased. Test plan, experimental setup, and experimental results are shown in detail in this article.
- Xin Xie - Oakland University
- Changqing Du - FCA US LLC
- Xiaona Li - Oakland University
- Yi-Hsin Chen - Oakland University
- Guobiao Yang - Oakland University
- Yongjun Zhou - FCA US LLC
- Dajun Zhou - FCA US LLC
- Yaqian Zheng - Oakland University
- Bernard Sia - Oakland University
- Christina Phillips - Oakland University
- Lianxiang Yang - Oakland University
CitationXie, X., Du, C., Li, X., Chen, Y. et al., "Measurement of Aluminum Edge Stretching Limit Using 3D Digital Image Correlation," SAE Technical Paper 2015-01-0594, 2015, https://doi.org/10.4271/2015-01-0594.
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