Fracture Mechanics of Ceramics : Volume 7 Composites, Impact, Statistics, and High-Temperature Phenomena

These volumes, 7 and 8, of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at Virginia Polytechnic Institute and State University, Blacksburg, Virginia on June 19, 20 and 21, 1985. These proceedings constitute the fourth pair of volumes of a continuing series of conferences. The theme of this conference, as the previous three, 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 EXXON Foundation, the Army Research Office, the Natio~al Science Foundation, and the Office of Naval Research. Without their support, this conference simply would not have been possible. The suggestions of Drs. J. C. Hurt, R. C. Pohanka, and L. Toth were particularly helpful in assuring the success of this symposium. Special appreciation is extended to Professor J. I. Robertson, C. P. Miles Professor of History. whose presentation following the banquet on the American Civil War was very well received by the audience. Finally, we wish to also thank our joint secretaries, especially Karen Snider, for their patience and help in finally bringing these proceedings to press. Front Matter....Pages i-ix The Tensile Strength of Uniaxially Reinforced Ceramic Fiber Composites....Pages 1-15 Applicability of Fracture Mechanics to Fiber-Reinforced CVD-Ceramic Composites....Pages 17-32 Fracture of Sic Fiber/Glass-Ceramic Composites as a Function of Temperature....Pages 33-51 Strength and Toughness Measurements of Ceramic Fiber Composites....Pages 53-60 Toughening of Ceramics by Whisker Reinforcement....Pages 61-73 Mechanical Properties of SiC-Whisker — Reinforced TZP....Pages 75-86 Fracture Behavior of Brittle Matrix, Particulate Composites with Thermal Expansion Mismatch....Pages 87-102 High-Temperature Mechanical Properties of Al 2 O 3 -SiC Composites....Pages 103-116 Particulate Toughening in the MgAl 2 O 4 -xTiO 2 System....Pages 117-126 Graphical Methods for Determining the Nonlinear Fracture Parameters of Silica and Graphite Refractory Composites....Pages 127-142 Fiber-Matrix Bonding in Steel Fiber-Reinforced Cement-Based Composites....Pages 143-155 Fracture Mechanics and Failure Processes in Polymer Modified and Blended Hydraulic Cements....Pages 157-174 Fracture of Brittle Rock under Dynamic Loading Conditions....Pages 175-186 An Impact Damage Model of Ceramic Coatings....Pages 187-196 Hertzian Impact Fracture Test for Helicopter Windshields....Pages 197-209 Numerical Approximating Forms for the Dynamic Stress Intensity Factor....Pages 211-222 On the Statistical Theory of Fracture Location Combined with Competing Risk Theory....Pages 223-225 The Use of Exploratory Data Analysis for the Safety Evaluation of Structural Ceramics....Pages 237-253 Proof Testing to Assure Reliability of Structural Ceramics....Pages 255-264 Assessment of Flaws in Ceramic Materials on the Basis of Non-Destructive Evaluation....Pages 265-283 Mechanical Properties and Dependence with Temperature of Tetragonal Polycrystalline Zirconia Materials....Pages 285-296 Prediction of Delayed Fracture from Crack Coalescence — Alumina....Pages 297-310 Damage Accumulation in Hot Pressed Alumina During Flexural Creep and Anneals in Air....Pages 311-326 Creep Cavitation Behavior in Polycrystalline Ceramics....Pages 327-347 Matrix Representation of the Crack-Enhanced Creep of Ceramics under Conditions of Multi-Axial Loading....Pages 349-356 Back Matter....Pages 357-367 This volume constitutes the proceedings of the 7th International Symposium on the Fracture Mechanics of Ceramics, held at the Presidium of the Russian Academy of Sciences, Moscow, Russia, on July 20-22, 1999. The theme of the symposium focused on the mechanical behavior of advanced ceramics in terms of the cracks, particularly the crack-microstructure interaction, delayed failure, and environmental effects in fracture. Special attention was paid to the novel methods in fracture mechanics testing, pre-standardization and standardization. Authors from 19 countries represented the current state of the field.