This report details a tensile testing experiment conducted on four materials: A-36 steel, polymethylmethacrylate (PMMA), polycarbonate, and 6061-T6 steel alloy. The experiment utilized an Instron load frame and BlueHill data acquisition software to measure material properties such as yield strength, modulus of elasticity, ultimate tensile strength, and percentage elongation. The report compares the behavior of each material under tensile stress, analyzing stress-strain curves and calculating key parameters. The findings highlight the superior strength of A-36 steel, the ductility of polycarbonate, and the brittle nature of PMMA. Furthermore, the report explores the differences between engineering stress and true stress, including the application of the Ramberg-Osgood model to describe the plastic behavior of the materials. The results provide valuable insights into material behavior and are essential for engineering design and material selection. The report also details the experimental procedures, including specimen preparation and testing methodology, providing a comprehensive understanding of the tensile testing process.
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