A technique for experimental evaluation of mixed mode stress intensity factors |
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| Authors: | P. McA. MacKenzie C. A. Walker R. Giannettoni |
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| Affiliation: | (1) Department of Mechanical & Manufacturing Engineering, University of Paisley, PA1 2BE Paisley, U.K.;(2) Department of Mechanical Engineering, University of Strathclyde, G1 1XJ Glasgow, U.K. |
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| Abstract: | ![]()
High sensitivity moiré interferometry was used to obtain whole-field orthogonal components of displacement in the vicinity of cracks in centre-cracked plates of aluminium 6082. The plates had been prepared in such a way as to enable the application of load at angles of 75° and 60° to the planes of the fatigue pre-cracks. The form of the moiré fringe data enables convenient separation of the components of stress intensity factor KI and KII. The results are compared with analytical predictions. The method is, in principle, suitable for use with specimens of arbitrary geometry and loading. |
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