FATIGUE CRACK GROWTH ANALYSIS OF FIBER REINFORCED CONCRETE WITH EFFECT OF INTERFACIAL BOND DEGRADATION

Abstract This paper presents an analytic model for fatigue crack life prediction in fiber reinforced concrete (FRC). The model elucidates fatigue crack growth in cementitious matrix material under the influence of external cyclic load and fiber and aggregate bridging. It is shown that fiber-matrix interface damage must be accounted for in order to properly simulate the three experimentally observed stages of matrix crack growth, involving a decelerated stage, a steady state stage, and an accelerated stage towards final fracture failure. This model, which explicitly accounts for the positive role of fibers on fatigue life, predicts the existence of the well-known fatigue limit load in standard S-N curve tests of FRCs. The basic framework of this analysis can be used to address fatigue life of FRC structures subjected to high cycle fatigue loading, as well as providing a basis for material design of fatigue resistant FRC at the microstructure level.

[1]  R. Ritchie,et al.  Cyclic Fatigue‐Crack Propagation in Magnesia‐Partially‐Stabilized Zirconia Ceramics , 1990 .

[2]  Stanley T. Rolfe,et al.  Fracture and Fatigue Control in Structures: Applications of Fracture Mechanics , 1976 .

[3]  V. Li,et al.  Buckling of bridging fibres in composites , 1994 .

[4]  Brian N. Cox,et al.  Stable and unstable solutions for bridged cracks in various specimens , 1991 .

[5]  V. Li,et al.  Micromechanics of crack bridging in fibre-reinforced concrete , 1993 .

[6]  Anthony M. Calomino,et al.  Kinetics of Crack Growth in Plain Concrete , 1989 .

[7]  A. Chudnovsky,et al.  Effect of Fatigue on Fracture Toughness of Concrete , 1986 .

[8]  Zdenek P. Bazant,et al.  Fatigue Fracture of High-Strength Concrete and Size Effect , 1993 .

[9]  G. Bao,et al.  Mode I fatigue cracking in a fiber reinforced metal matrix composite , 1993 .

[10]  H. W. Reinhardt,et al.  Growth of Discrete Cracks in Concrete under Fatigue Loading , 1991 .

[11]  Mohammed H. Baluch,et al.  Fatigue Crack Propagation in Plain Concrete , 1989 .

[12]  Victor C. Li,et al.  Postcrack Scaling Relations for Fiber Reinforced Cementitious Composites , 1992 .

[13]  Zdenek P. Bazant,et al.  Size Effect in Fatigue Fracture of Concrete , 1991 .

[14]  R. Dauskardt.  Cyclic Fatigue-Crack Growth in Grain Bridging Ceramics , 1993 .

[15]  Zhang Jun,et al.  Fatigue Performance in Flexure of Fiber Reinforced Concrete , 1998 .

[16]  P. C. Paris,et al.  A Critical Analysis of Crack Propagation Laws , 1963 .

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

[18]  Hideyuki Horii,et al.  Mechanism of fatigue crack growth in concrete , 1992 .

[19]  Victor C. Li,et al.  Effect of inclining angle, bundling and surface treatment on synthetic fibre pull-out from a cement matrix , 1990 .

[20]  Robert O. Ritchie,et al.  Cyclic Fatigue‐Crack Growth in a SiC‐Whisker‐Reinforced Alumina Ceramic Composite: Long‐ and Small‐Crack Behavior , 1992 .

[21]  Hidehiro Kishimoto,et al.  Cyclic Fatigue in Ceramics , 1995 .

[22]  Hiroshi Tada,et al.  The stress analysis of cracks handbook , 2000 .

[23]  R. Dauskardt,et al.  Cyclic fatigue-crack propagation in a silicon carbide whisker-reinforced alumina composite: role of load ratio , 1993 .

[24]  W. Keru,et al.  Fatigue Rupture of Plain Concrete Analysed by Fracture Mechanics , 1989 .

[25]  Subra Suresh,et al.  High‐Temperature Failure of an Alumina‐Silicon Carbide Composite under Cyclic loads: Mechanisms of Fatigue Crack‐Tip Damage , 1989 .

[26]  B. Cox.  Extrinsic factors in the mechanics of bridged cracks , 1991 .