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applied fracture mechanics

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372Applied Fracture Mechanics32.82.62.4b/a = 2.5Brown & Strawley (1966)Present (ct1)Present (ct2)Jiang et al. (1990)IntersectionpointCrack interaction factor, γ I2.221.81.61.41.21Intersection point I , in , Jif I , ref , BS ( , )I , in, D I , in, D, ct1 I , in, D, ct20.80.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5Crack to width ratio , a/WFigure 4. Variation of I , in,D against a/W for b/ a 2.532.82.62.4b/a = 2.0Brown & Strawley (1966)Present (ct1)Present (ct2)Jiang et al. (1990)IntersectionpointCrack interaction factor, γ I2.221.81.61.41.21Intersectionpoint I , in , Ji0.80.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5Crack to width ratio , a/WFigure 5. Variation of I , in,D against a/W for b/ a 2.0f I , ref , BS ( , )IinD , , IinDct , , , 1 IinDct , , , 2

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