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Journal of the American Ceramic Society, Vol.83, No.8, 2109-2111, 2000
Subcritical crack growth in soda-lime glass under mixed-mode loading
Subcritical crack growth in glasses and ceramics has been studied extensively under Mode I loading, In this study, subcritical crack growth in soda-lime glass under mixed-mode loading has been determined, using the double cleavage drilled compression (DCDC) specimens with a hole offset from the center line. With this test configuration, cracks are nucleated at the pole of the hole and propagated parallel to the centerline of the specimen under mixed-mode loading. Under mixed-mode loading, subcritical-crark-growth rates are significantly less than those under Mode I loading at the same energy-release rates. Possible mechanisms for this increased resistance to subcritical crack growth under mixed-mode loading are discussed.