Journal
JOURNAL OF FAILURE ANALYSIS AND PREVENTION
Volume 13, Issue 2, Pages 217-226Publisher
SPRINGER
DOI: 10.1007/s11668-013-9659-4
Keywords
Mixed mode fracture; Stress intensity factor; Biaxial load; Crack angle
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Determination of stress intensity factors KI, KII, and constant stress term, rox is investigated. A theory of determining the stress intensity factors using photo-elastic method is formulated taking three stress terms. Three-parameter method of fracture analysis for determining the mixed mode stress intensity factors under biaxial loading conditions from photo-elastic isochromatic fringe data is used. A special biaxial test rig is designed and fabricated for loading the specimen biaxially. A simplified and accurate method is proposed to collect the data from isochromatic fringes. Taking specimen geometry and boundary conditions into account, regression models are developed for estimation of fracture parameters.
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