By Mr. Muhammad Iman Sufi Bin Suliman, Universiti Teknologi Mara
| 1 | Question from Dr. Hamdi Muhyuddin Barra | In your methodology, why must the sample be modelled into a dog bone shape? | Answer from presenter | The dog bone shape is commonly used in materials testing for tensile properties because it offers several advantages that contribute to accurate measurements. The narrow waist of the dog bone shape ensures a consistent cross-sectional area along the gauge length. This is essential for accurate tensile testing because it helps distribute the stress evenly across the specimen. The gradual tapering of the specimen at both ends helps reduce stress concentrations that can occur at abrupt transitions or notches in the material. Minimizing stress concentrations is important for obtaining reliable tensile test results. |
| 2 | Question from Dr. Hamdi Muhyuddin Barra | In the figures under Simulation on Deformation and Displacement Contour and Simulated Stress Contour (both in the Ogden Model and Neo-Hookean Model), what do the colors mean or represent? | Answer from presenter | In deformation and displacement contour plots, the color scheme is used to represent the magnitude of deformation or displacement in the material being tested. The color bar shows the range of deformation or displacement values, and the colors in the plot represent the deformation or displacement values at each point in the model. For the simulated stress contour, the color scheme is used to represent the magnitude of stress in the material being tested. The color bar shows the range of stress values, and the colors in the plot represent the stress values at each point in the model. |