Communications Service (dsrcs) § 90.379 ASTM E2213-03 DSRC Standard ( ASTM-DSRC Standard). 47 Telecommunication 5 false ASTM E2213-03 DSRC Standard ( ASTM-DSRC Standard. The SIF is assumed to reflect the average stress environment near the crack edge.Ĥ7 CFR 90.379 - ASTM E2213-03 DSRC Standard ( ASTM-DSRC Standard). These results were used to assess the requirements of ASTM standards E399-71 and E399-81 on the shape of crack fronts. A thickness average SIF was computed for parabolically applied shear loading. For the higher values of crack front curvatures, the maximum value of the SIF occurs at an interior point located adjacent to the surface. For the purely elastic case, it was found that as the crack front curvature increases, the SIF value at the center of the specimen decreases while increasing at the surface. The stress intensity factors (SIF) are calculated using the method of lines for the compact tension specimen in tensile and shear loading for curved crack fronts. Effect of crack curvature on stress intensity factors for ASTM standard compact tension specimens
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