Assessing Material Properties of Commercial Magnesium Alloy with Digital Image Correlation (DIC) Technique for Forming Applications

Abstract:

The engineering field's main issues are often identified to be estimating the deformation and the strain measurements of the working material. Gauging displacements until the fracture more accurately is crucial in experimental procedures for assessing the chosen material properties. This research paper investigates the commercial magnesium alloy (AZ31B) material using digital images, often called Digital Image Correlation (DIC), which provides complete displacement and strain data information at each timestep rather than utilizing an extensometer. This method provides images taken during the deformation, and subsequently, the material properties computed using correlation software for tested samples. The plastic anisotropy coefficients are computed for test samples that cut down at angles of 0, 45, and 90 to the rolling direction. Also, the tensile test finite element model until the necking region was used to verify the fitted models such as Hollomon power-law and Ramberg–Osgood relationships to define the non-linear relationship between stress and strain. Hence, real models and numerical simulations of incremental forming are created to depict this research work's usefulness to the forming applications.

• Periodical: Materials Science Forum (Volume 1033)
• Pages: 8-12
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1033.8
• Online since: June 2021
• Authors: Mohanraj Murugesan, Muhammad Sajjad, Dong Won Jung*
• Keywords: Deformation, Digital Image Correlation, Finite Element Model, Incremental Forming, Plastic Anisotropy Coefficient, Strain Measurements, Tensile Test

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