Abstract
In this work, digital image correlation (DIC) is used to investigate the unique banding behaviors of selected steel and aluminium alloy sheets at various temperatures. The materials are deformed in simple tension at different temperatures ranging between −50 and 300 °C. DIC is integrated in the tension testing setup, and the impact of the testing setup (glass and heat) on the accuracy of the measurements is evaluated. DIC reveals the accumulation of localized plastic strains and strain rates, as well as their evolution during testing. Depending on the mechanism of mobility of the material surface during deformation, different dynamic localization bands are noted. Selected examples highlighting a dramatic shift in the dynamic banding behavior in these materials are discussed. The correlations between the bands revealed in DIC measured strain and strain rate maps, and the corresponding macro-mechanical stress-strain behaviors are explored for different types of bands.
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Hu, J., Zhang, N., Abu-Farha, F. (2016). Revealing Dynamic Banding During High Temperature Deformation of Lightweight Materials Using Digital Image Correlation. In: Jin, H., Yoshida, S., Lamberti, L., Lin, MT. (eds) Advancement of Optical Methods in Experimental Mechanics, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-22446-6_34
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DOI: https://doi.org/10.1007/978-3-319-22446-6_34
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-22445-9
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