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This paper discusses the interference effects of stress intensity factor K<SUB>I</SUB> in the case of a strip plate with three edged cracks under a uniform tension by the caustic method. The material of specimens used is the epoxy resin and DAP resin, which have already been used for the stress analysis by photoelastic method, caustic method and so on. Next, the validity of the experimental result is estimated by simulation of J-integral. Two kinds of simulation model shape are prepared: one is the same model shape as experimental model and the other is for simulation. Though the values by simulation are a little larger than the ones obtained by experiments, both values do not show so much difference; rather comparatively both values are close. And, from the above result, our experiments have led interference effects of K<SUB>I</SUB>.
日本実験力学会の論文