Abstract
Previous work by the authors has indicated that crack behaviour in PMMA (and thus probably in other materials as well) shows a secondary dependence on the degree of in-plane stress biaxiality, in addition to its established primary dependence on K 1, the elastic stress intensity factor. Data published here shows the crack-length dependence of a parameter expressing the degree of stress biaxiality inherent to a number of standard specimen geometries. This should help to determine to what, if any, extent a given material's sensitivity to stress biaxiality is responsible for K 1-independent variations in crack behaviour between specimens.
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Leevers, P.S., Radon, J.C. Inherent stress biaxiality in various fracture specimen geometries. Int J Fract 19, 311–325 (1982). https://doi.org/10.1007/BF00012486
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DOI: https://doi.org/10.1007/BF00012486