论文信息 - Some effects of microcracks on the mechanical properties of brittle solids—I. Stress, strain relations

Some effects of microcracks on the mechanical properties of brittle solids—I. Stress, strain relations

Abstract An analysis of microcracking in a brittle polycrystalline aggregate is presented. The analysis is based on the combined influence of the residual stress and the applied loads. Microcrack densities are predicted as a function of load and correlated with acoustic emission measurements. The nonlinear characteristics of the stress-strain curves of microcracking materials are calculated, as required for subsequent evaluation of microcrack toughening in brittle materials.

Anthony G. Evans | A. Evans | Y. Fu | Y. Fu | Y. Fu

[1] E. Case,et al. Grain-size dependence of microcrack initiation in brittle materials , 1980 .

[2] A. Evans. Microfracture from thermal expansion anisotropy—I. Single phase systems , 1978 .

[3] A. Evans,et al. Crack deflection processes—II. Experiment , 1983 .

[4] J. A. Pask,et al. Role of “Adherence Oxides” in the Development of Chemical Bonding at Glass‐Metal Interfaces , 1966 .

[5] B. E. Walker,et al. Effect of Internal Stress on the Strength of BaTiO3 , 1976 .

[6] A. Evans,et al. Some effects of microcracks on the mechanical properties of brittle solids—II. Microcrack toughening , 1985 .

[7] R. Bradt,et al. Influence of Grain Size on Effects of Thermal Expansion Anisotropy in MgTi2O5 , 1973 .

[8] R. Honeycombe,et al. Thermal Fatigue of Metals , 1944, Nature.

[9] B. Budiansky,et al. Elastic moduli of a cracked solid , 1976 .

[10] R. Davidge. Cracking at grain boundaries in polycrystalline brittle materials , 1981 .

[11] L. Russell,et al. Acoustic emission and crack propagation in polycrystalline alumina , 1974 .