6433 Final Crack Length

It is still debatable whether uMMCs fail due to conditions of fracture toughness or conditions of general yielding. This is basically because the contribution of the toughening mechanisms in a fiber-reinforced composite, namely interfacial debonding, fiber bridging, and fiber pull-out, decreases with loading cycles [9, 11]. Additionally, the possibility for an accurate analytical determination of the fracture toughness is getting even thinner if we take into account that

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