CRACK INTERACTION, COALESCENCE AND MIXED MODE FRACTURE MECHANICS

Multiple cracks are often observed in engineering structures; and their interaction and coalescence may significantly affect the lifetime of component or structure. In this paper, the general features associated with crack interaction and coalescence are presented, and the conditions for coalescence in various forms are reviewed. A model has been developed based on the principles of mixed mode fracture mechanics, to provide a rational explanation for the phenomenon of crack interaction and to predict the coalescence conditions. The latter is found to agree reasonably with the experimental observations.

[1]  Z. G. Wang,et al.  Mixed-Mode I and II fatigue threshold and crack closure in dual-phase steels , 1994 .

[2]  J. Hutchinson,et al.  Kinking of A Crack Out of AN Interface , 1989 .

[3]  P. Forsyth.  A unified description of micro and macroscopic fatigue crack behaviour , 1983 .

[4]  R. N. Parkins,et al.  Stress Corrosion Cracking Characteristics of a Range of Pipeline Steels in Carbonate-Bicarbonate Solution ✫ , 1993 .

[5]  Y. G. Kang,et al.  A SIMULATION OF THE FATIGUE CRACK PROCESS IN TYPE 304 STAINLESS STEEL AT 538°C , 1992 .

[6]  M. W. Brown,et al.  A REVIEW OF FATIGUE CRACK GROWTH IN STEELS UNDER MIXED MODE I AND II LOADING , 1992 .

[7]  M. Kachanov,et al.  Three-dimensional problems of strongly interacting arbitrarily located penny-shaped cracks , 1989 .

[8]  F. Erdogan,et al.  On the Crack Extension in Plates Under Plane Loading and Transverse Shear , 1963 .

[9]  K. Lam,et al.  Multiple crack interaction and its effect on stress intensity factor , 1991 .

[10]  C. Shih,et al.  Small-Scale Yielding Analysis of Mixed Mode Plane-Strain Crack Problems , 1974 .

[11]  H. Kitagawa,et al.  Small Randomly Distributed Cracks in Corrosion Fatigue , 1978 .

[12]  G. Sih.  Strain-energy-density factor applied to mixed mode crack problems , 1974 .

[13]  D. Davidson.  Plasticity Induced Fatigue Crack Closure , 1988 .

[14]  R. N. Parkins,et al.  Stress Corrosion Crack Coalescence , 1990 .

[15]  Wole Soboyejo,et al.  THE PROPAGATION OF NON‐COPLANAR SEMI‐ELLIPTICAL FATIGUE CRACKS , 1991 .

[16]  R. N. Parkins,et al.  The behaviour of multiple stress corrosion cracks in a Mn-Cr and a Ni-Cr-Mo-V steel: III—Monte Carlo simulation , 1995 .

[17]  D. V. Rooyen.  Stress Corrosion Cracking , 1960 .

[18]  C. Shih,et al.  Plastic near-tip fields for branched cracks , 1986 .

[19]  W. G. Knauss,et al.  II – On the Problem of Crack Extension in Brittle Solids Under General Loading , 1978 .

[20]  James C. Newman,et al.  Three-dimensional aspects of plasticity-induced fatigue crack closure , 1989 .

[21]  Yasuo Ochi,et al.  AN EXPERIMENTAL AND STATISTICAL INVESTIGATION OF SURFACE FATIGUE CRACK INITIATION AND GROWTH , 1985 .

[22]  K. J. Miller,et al.  MIXED‐MODE FATIGUE THRESHOLDS , 1982 .

[23]  Noel P. O’Dowd,et al.  Mixed-mode fracture toughness of ceramic materials , 1990 .

[24]  Joseph Padovan,et al.  Influence of mixed-mode loading on fatigue-crack propagation , 1994 .

[25]  R. N. Parkins,et al.  Transgranular Stress Corrosion Cracking of High-Pressure Pipelines in Contact with Solutions of Near Neutral pH , 1994 .

[26]  Hussain,et al.  Strain Energy Release Rate for a Crack Under Combined Mode I and Mode II , 1974 .

[27]  Angelika Brückner-Foit,et al.  STATISTICAL CHARACTERIZATION OF RANDOM CRACK PATTERNS CAUSED BY THERMAL FATIGUE , 1992 .

[28]  Brian N. Leis,et al.  Mixed-mode stress intensity factors for interacting semi-elliptical surface cracks in a plate , 1993 .

[29]  S. Suresh.  Fatigue of materials , 1991 .

[30]  E. R. Rios,et al.  INTERACTIVE EFFECT OF TWO COPLANAR CRACKS ON PLASTIC YIELDING AND COALESCENCE , 1994 .

[31]  Mark Kachanov,et al.  Three-dimensional interactions of a crack front with arrays of penny-shaped microcracks , 1991 .