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Measurement of Crack Tip Displacement Fields in Mixed Mode I–Mode III Fracture
Author(s) -
Tossel David A.,
Ashbee Kenneth H. G.
Publication year - 1988
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1988.tb05035.x
Subject(s) - borosilicate glass , optical glass , soda lime , fracture toughness , materials science , silicate glass , displacement (psychology) , mode (computer interface) , displacement field , silicate , composite material , fracture (geology) , mineralogy , soda lime glass , optics , chemistry , thermodynamics , physics , psychology , organic chemistry , finite element method , computer science , psychotherapist , operating system
A new method has been devised to propagate stable subcritical mixed mode I–mode III cracks in soda–lime–silicate and borosilicate glasses. The mode I content was measured using an original optical tunneling technique and mode III content via multiple‐beam interferometry. Measurement of the mode III displacement field allows values of mode III fracture toughness, K III , to be derived. K III vs crack velocity (v) diagrams have been constructed for both glasses, and, in the case of the soda–lime–silicate glass, v vs K III relationships have been determined for a variety of humidities. Comparison has been made with published K I vs v data for this glass.