... | ... | @@ -21,6 +21,7 @@ Cutting samples out of a sheet |
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The first historical method consists in cutting the sample out of a sheet of photoelastic material. This can be simply a plate of plexiglass or a rubber pad that you cut with a milling machine, a cookie cutter or waterjet. You pick the material whose deformability is compatible with the load you want to apply and you cut it using different methods listed in [this tutorial](https://git-xen.lmgc.univ-montp2.fr/PhotoElasticity/Main/wikis/cutting-sample). This is convenient to get 2D samples. However, most of the time cutting methods induce residual stresses so machining the pads can be tricky. Also, it can be quite expensive depending on the material you use. All the details are available [here](https://git-xen.lmgc.univ-montp2.fr/PhotoElasticity/Main/wikis/cutting-sample).
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![101_0001](uploads/b1e808c9692743c459716af008e60974/101_0001.JPG)
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The sample on the left (cross) is cut using a milling machine, while one on the left (cylinder) is cut with a rotating cookie cutter.
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