Abstract
Many engineering materials are tough and ductile, and the thicknesses of the structures are often thinner than that which necessitates a plane strain analysis. This paper summarizes briefly our studies on the thickness effects on the characteristics of crack tip stresses and crack tip deformation. Near tip stresses, near tip strains, the relative opening displacements between the upper and the lower crack surfaces, and those between the upper and the lower boundaries of the crack tip strip necking zone have been investigated both theoretically and experimentally. The results suggest that the thickness contractions of the fracture surfaces measured from broken specimens, crack opening displacements, and plane stress characterization can be used to correlate with fracture toughness. The choice of a specific fracture criterion depends upon the value of the necking parameter, (K/σY)2/t. t is plate thickness.
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References
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© 1981 Martinus Nijhoff Publishers, The Hague
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Liu, H.W. (1981). Thickness Effects on Fracture Criteria. In: Liu, H.W., Kunio, T., Weiss, V., Okamura, H. (eds) Fracture Mechanics of Ductile and Tough Materials and its Applications to Energy Related Structures. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7479-1_18
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DOI: https://doi.org/10.1007/978-94-009-7479-1_18
Publisher Name: Springer, Dordrecht
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