Crack stability in fracture toughness testing

Abstract The significance of crack stability in fracture toughness testing is discussed and the roles played by testing machine stiffness, testpiece geometry and material rate dependence are described. A compilation of the stability factors for more than twenty testpiece geometries under different loading conditions is given and compared with experimental results. Supplementary experimental methods of promoting crack stability for inherently unstable materials are discussed and illustrated with examples.

[1]  Yiu-Wing Mai,et al.  Stability of cracking , 1972 .

[2]  Robert J. Young,et al.  Stability of crack propagation in epoxy resins , 1977 .

[3]  A. Atkins,et al.  Time-temperature dependent fracture toughness of PMMA , 1975 .

[4]  C. E Turner.  Fracture toughness and specific fracture energy: A re-analysis of results , 1973 .

[5]  C. Gurney,et al.  Quasistatic crack propagation in nonlinear structures , 1971, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[6]  G. T. Hahn,et al.  Mechanisms of fast fracture and arrest in steels , 1972 .

[7]  J. G. Williams,et al.  Temperature effects in the fracture of PMMA , 1974 .

[8]  W T Evans,et al.  Experimental evaluation of the fracture toughness (K1c) of an epoxy resin , 1974 .

[9]  Cracking in layered composites , 1978 .

[10]  Determination of valid R-curves for materials with large fracture toughness to yield strength ratios , 1976, International Journal of Fracture.

[11]  C. Gurney,et al.  Quasi-static crack propagation , 1967, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[12]  A. G. Evans,et al.  Fracture Mechanics Determinations , 1974 .

[13]  F. C. Roesler,et al.  Brittle Fractures near Equilibrium , 1956 .

[14]  D. Clausing.  Crack stability in linear elastic fracture mechanics , 1969 .

[15]  Its Applicaions.  Fracture toughness testing and its applications : a symposium presented at the sixty-seventh annual meeting, American Society for Testing and Materials, Chicago, Ill., June 21-26, 1964 , 1965 .

[16]  Robert M. Caddell,et al.  On the stability of cracking in tapered DCB testpieces , 1975, International Journal of Fracture.

[17]  A. Kinloch,et al.  Relationship between mechanical properties of and crack progogation in epoxy resin adhesives , 1978 .

[18]  A. Atkins,et al.  Effect of water and ice on strength and fracture toughness of intermittently bonded boron-epoxy composites , 1976 .

[19]  J. Glucklich.  On crack stability in some fracture tests , 1971 .

[20]  G. Irwin.  ANALYSIS OF STRESS AND STRAINS NEAR THE END OF A CRACK TRAVERSING A PLATE , 1957 .

[21]  C. Chow,et al.  Stability Conditions in Quasi-Static Crack Propagation for Constant Strain Energy Release Rate , 1974 .

[22]  J. G. Williams,et al.  Fracture toughness and absorbed energy measurements in impact tests on brittle materials , 1973 .

[23]  Y. Mai,et al.  Quasistatic cracking of materials with high fracture toughness and low yield stress , 1974, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[24]  A. Atkins,et al.  On the velocity-dependent fracture toughness of epoxy resins , 1975 .

[25]  D. Rooke,et al.  The compendium of stress intensity factors , 1978, International Journal of Fracture.