Strain measurement on a 3 point bending testTwo polymer plates are glued together and loaded in a 3 point bending test. The surface strain is measured with the Q400 DIC system The images show the horizontal surface strain and the strain along the vertical line 1. The left image gives compression strain (blue) and tension strain (red) as a gradient over the whole specimen. After the failure of the glue the strain distribution is separated for each plate. This application example clearly shows how the strain is distributed on the component surface during a 3-point bending test. Bending tests are carried out to characterize the bending strength, stiffness and deformability of materials or structures. Overall, bending tests are an important tool for understanding the bending properties of materials and ensuring that they meet the requirements of different applications. |
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