Journal
ENGINEERING FRACTURE MECHANICS
Volume 129, Issue -, Pages 14-25Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2014.04.002
Keywords
Experimental stress analysis; Thin wall material; Cohesive zone; J integral; Fracture process zone; Separation energy; Essential fracture work; Aluminum alloy; Digital image correlation; X-ray computed tomography; Ductile metal sheet
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Funding
- Grant Agency of the Czech Republic [GBP105/12/G059]
- European Regional Development Fund, Ministry of Education, Youth and Sports of the Czech Republic [CZ.1.05/1.1.00/02.0060]
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The fracture mechanics of ductile thin wall is different from that of thick wall materials which is standardly used in fracture mechanics testing. An appropriate determination of the fracture toughness of thin wall materials can be provided by the direct calculation of the contour J integral. The experimental evaluation of the energy dissipated by the fracture process zone and the newly developed crack is even more fundamental. For related calculations, knowledge of several physical quantities is necessary such as crack path and processing zone shape, strain-stress field and plastic deformation evolution. Several experimental methods in conjunction with numerical post-processing were employed. (C) 2014 The Authors. Published by Elsevier Ltd.
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