4. Conclusion
Fracture mechanics provides values for toughness, intrinsic critical parameters which, once determined using tests on specimens, enable us to predict the behavior of a crack in a part under load. In linear elasticity, this transposition of results is rigorously exact. Knowing (figure 1 ) the location and dimensions of a defect in the part and the material toughness K Ic enables us to calculate the critical load, by determining K I and equating it to K I c (or, knowing the load, to determine the size of the critical defect). However, this application...
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