Journal
ENGINEERING FRACTURE MECHANICS
Volume 79, Issue -, Pages 126-137Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2011.10.008
Keywords
Fracture toughness; Ball indentation; High strength low alloy steel (HSLA); Continuum damage mechanics; Finite element modeling (FEM)
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Funding
- Fast Track Young Scientist Project of Department of Science & Technology, New Delhi [SR/FTNETA-11/06]
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The effect of pre-strain on indentation fracture toughness of copper strengthened high strength low alloy structural steel has been studied with the help of a model based on continuum damage mechanics developed by J.-S. Lee et al. To examine the basic assumption of the model, finite element simulation of ball indentation has been done and which feasibility has been checked by comparing the load depth curve with the experimental data. With pre-straining, continuous decrement of indentation fracture toughness values of the materials has been observed which showed good agreement with the initiation fracture toughness values from the conventional test technique. (C) 2011 Elsevier Ltd. All rights reserved.
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