Fracture Mechanics of Ceramics: Volume 5 Surface Flaws, Statistics, and Microcracking

ISBN-13: 9781461334903 / Angielski / Miękka / 2012 / 706 str.

R. C. Bradt; A. G. Evans; D. P. H. Hasselman

Opis

These volumes, 5 and 6, of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at The Pennsylvania State University, University Park, PA on July 15, 16, and 17, 1981. These proceedings constitute the third pair of volumes of a con- tinuing series of conferences. Volumes 1 and 2 were from the 1973 symposium and volumes 3 and 4 from a 1977 symposium, both of which were also held at Penn State. The theme of this conference, as the previous two, focused on the mechanical behavior of ceramic materials in terms of the characteristics of cracks, particularly the roles which they assume in the fracture process. The 78 contributed papers by over 100 authors and co-authors represent the current state of the field. They address many of the theoretical and practical problems of interest to those concerned with brittle fracture. The program chairmen gratefully acknowledge the financial assistance for the Symposium provided by the Army Research Office, the National Science Foundation, and the Office of Naval Research. Without their support, the magnitude and quality of this conference simply would not have been possible.

Spis treści

of Volume 5.- The Indentation Crack as a Model Surface Flaw.- Analysis of Water Impacts on Zinc Sulfide.- Interface Crack Extension with Friction.- Contact Damage and Residual Stresses Induced During Single Point Grinding of Various Ceramics.- Shear Flow and Fracture Beneath Sharp Indentations in Soda-lime Glass.- Impact Damage Resistance of Flat Glass/Cellular Glass Solar Mirror Experimental Panels.- Indentation Fracture Toughness of Brittle Materials for Palmquist Cracks.- Surface and Subsurface Fracture in Single Crystals of ?-SiC.- Deformation and Cracking During High Temperature Scratching of Some Brittle Materials.- Effect of Crystallites on Size of Flaws Introduced During Surface Damage in Glass-Ceramics.- Analytical and Experimental Evaluation of Biaxial Contact Stress.- Effects of Surface Conditions on Stress-Rate Dependence of Mechanical Strength of High Silica Glass.- A Probabilistic Framework for Structural Design.- Assessment of Reliability of Ceramic Materials.- A Crack as a Crystal Defect with Implications for the Fracture Resistance.- The Stress Corrosion Limit: Its Measurement and Implications.- Examination of the Tensile Strength of E-Glass Fiber in the Context of Slow Crack Growth.- Critical and Subcritical Crack Extension in Al2O3and SiC as Functions of Temperature, Environment and Loading Rate.- A Universal Materials Function for Subcritical Crack Extension.- Slow Crack Growth Studies in Silicon.- Electric Field Effects on Subcritical Crack Growth in PZT.- Fracture of Piezoelectric Materials.- Fracture Statistics of Multiple Flaw Distributions.- Examination of Size Effects in the Failure Prediction of Ceramic Material.- Effects of Oxidation on the Reliability of Silicon Nitride.- Improving the Reliability of Hot-Pressed Silicon Nitride.- Implication of Time Dependent and Environmental Response of Structural Ceramics in Life Estimating Procedures.- Microcracking Mechanisms in Ceramics.- Numerical Modeling of Microcracking in Two-Phase Ceramics.- Statistical Aspects of Grain Boundary Cracking in Ceramics and Rocks.- Microcrack Healing During the Temperature Cycling of Single Phase Ceramics.- Biaxial Stress State Effects on Strengths of Ceramics Failing from Pores.- Mode I Stress Intensity Factor Estimates for Various Configurations Involving Single and Multiple Cracked Spherical Voids.- A Microcracking Model for the Effect of Grain Size on Slow Crack Growth in Polycrystalline Al2O3.- Relationship Between Microcrack Zones and Toughness of Fine Grained Alumina and Coarse Grained Graphites.- Fracture Behavior of Glass Matrix/Glass Particle Composites.- The Role of Subcritical Tensile Microfracture Processes in Compression Failure of Ceramics.- Elastic Creep by Crack Growth During Residual Stress Relaxation in a Polycrystalline Aluminum Oxide.- Limitation and Challenges in Applying Fracture Mechanics to Ceramics.- Contributors.- Index to Volume 5.- Index to Volume.