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|Title:||Initiation of ductile fracture in mixed-mode I and II aluminum alloy specimens||Authors:||Qian, X.
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|Issue Date:||Oct-2012||Citation:||Qian, X., Yang, W. (2012-10). Initiation of ductile fracture in mixed-mode I and II aluminum alloy specimens. Engineering Fracture Mechanics 93 : 189-203. ScholarBank@NUS Repository.||Abstract:||This study investigates the initiation of mixed-mode crack extensions in four-point bend and shear specimens fabricated from aluminum alloys. The determination of fracture initiation utilizes a new strain detection method, which provides a uniform criterion for specimens over the complete mixed-mode I-II loading range. The 0.2. mm offset method for mode I specimens and the physical features on the fracture surface of mode II dominant specimens validate this method. The total measured fracture toughness shows a minimum value for the pure mode I case, a maximum for the pure mode II case and an oscillated trend over the mixed-mode I-II loads. © 2012 Elsevier Ltd.||Source Title:||Engineering Fracture Mechanics||URI:||http://scholarbank.nus.edu.sg/handle/10635/59095||ISSN:||00137944|
|Appears in Collections:||Staff Publications|
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