Experimental investigation of dynamic mixed-mode fracture initiation

John M. Lambros; James J. Mason; Ares J. Rosakis

doi:10.1117/12.49481

1 December 1991 Experimental investigation of dynamic mixed-mode fracture initiation

John M. Lambros, James J. Mason, Ares J. Rosakis

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.49481
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The use of a coherent gradient sensing (CGS) apparatus is explored in dynamic fracture mechanics investigations. The ability of the method to accurately quantify mixed-mode crack tip deformation fields is tested under dynamic loading conditions. The specimen geometry and loading follow that of Lee and Freund^1,2 who give the theoretical and numerical mixed mode K values as a function of time for the testing conditions. The CGS system’s measurements of K_I and K_II are compared with the predicted results, and good agreement is found.

Citation Download Citation

John M. Lambros, James J. Mason, and Ares J. Rosakis "Experimental investigation of dynamic mixed-mode fracture initiation", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.49481

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