Abstract
In this paper, a method of evaluating the static strength of a V-shaped notch based on the singular stress field at the notch tip is studied. The singular stress field is defined by two parameters, K1, λ1 and K11, λ2, which correspond to the intensities of the symmetric stress field and the skewsymmetric field, respectively. Four kinds of fracture criteria are considered ; two of them are based on the tensile strength δB and the other two are based on the fracture toughness K1C. The usefullness of the criteria is investigated through the experiment results carried out on plane speciments of acrylic resin having a sharp notch for various notch configurations such as the opening angle, the inclined angle and the notch depth.
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