4/4/2023 0 Comments Road rash 95 crack download![]() ![]() The measurements demonstrate the existence of a cohesive fracture process zone ahead of the crack tip, which is a characteristic of quasi-brittle materials. ![]() The DVC-measured displacement field was used to measure and map the crack opening displacements in 3D the experimentally calculated crack opening displacements were consistent with the FE-predicted values. Tomographic absorption contrast images were obtained from the specimen before and after crack propagation, whilst loaded. A three-dimensional linear elastic finite element simulation of the specimen obtained the relations between crack length, opening displacement and stress intensity factor along the crack front. ![]() This paper reports a study of the fracture behaviour of a short-bar chevron notch crack propagation specimen fabricated from polygranular nuclear graphite - a quasi-brittle material. X-ray computed tomography (XCT) provides valuable insights into the structures within materials: when XCT is combined with digital volume correlation (DVC) the response to applied loads can be measured with high precision in the form of the three-dimensional displacement field within the material. ![]() Observations of fracture are generally restricted to the surface of test specimens yet the fracture process occurs within the material. ![]()
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