Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.engfracmech.2012.06.018
Title: Initiation of ductile fracture in mixed-mode I and II aluminum alloy specimens
Authors: Qian, X. 
Yang, W.
Keywords: Ductile fracture
Energy release rate
Fracture initiation
Mixed mode
Strain detection
Issue Date: Oct-2012
Source: 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. https://doi.org/10.1016/j.engfracmech.2012.06.018
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
DOI: 10.1016/j.engfracmech.2012.06.018
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