Ebook: Concepts, Flaws, and Fractography

These volumes constitute the Proceedings of a Symposium on the Fracture Mechanics of Ceramics, held at the Pennsylvania State University, University Park, Pennsylvania, July 11, 12, and 13, 1973. The theme of the symposium focussed on the mechanical behavior of brittle ceramics in terms of the characteristics of cracks. The 52 contributed papers by 87 authors, present an overview of the cur­ rent understanding of the theory and application of fracture mechan­ ics to brittle ceramics. The program chairmen gratefully acknowledge the financial assistance for the Symposium provided by the Office of Naval Re­ search, the College of Earth and Mineral Sciences of the Pennsyl­ vania State University, the Materials Research Center of Lehigh University, Bethlehem, Pennsylvana and Westinghouse Research Laboratories, Pittsburgh, Pennsylvania. Special appreciation is extended to the expert organization provided by the J. Orvis Keller Conference Center of the Pennsyl­ vania State Conference Center of the Pennsylvania State University. In particular, Mrs. Patricia Ewing should be acknowledged for the excellent program organization and planning. Dean Harold J. O'Brien, who was featured as the after-dinner speaker and who presented a most stimulating talk on the communication between people, also contrib­ uted to the success of the meeting. Finally, we also wish to thank our joint secretaries for the patience and help in bringing these Proceedings to press. University Park R. C. Bradt Bethlehem D. P. H. Hasselman Pittsburgh, Pennsylvania F. F. Lange July, 1973 v CONTENTS OF VOLUME 1 Contents of Volume 2 . . . . . . . . . . . . . . . . . . .

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Content:
Front Matter....Pages i-xiii
Front Matter....Pages 1-1
Origin and Use of Fracture Mechanics....Pages 3-15
Fracture Mechanics Determinations....Pages 17-48
Determination of Elastic Constants Required for Application of Fracture Mechanics to Ceramics....Pages 49-68
Conventional Strength Testing of Ceramics....Pages 69-92
Statistics of Brittle Fracture....Pages 93-114
Front Matter....Pages 115-115
Overview of Nondestructive Inspection Techniques....Pages 117-160
Origin and Detection of Microflaws in Glass....Pages 161-173
Microstructural Aspects of Acoustic Emission Generation in Ceramics....Pages 175-188
Surface Evaluation Using Acoustic Emission....Pages 189-200
Observation of Crack Propagation in Polycrystalline Ceramics and Its Relationship to Acoustic Emissions....Pages 201-229
The Initiation and Propagation of Hertzian Ring Cracks....Pages 231-244
The Interaction Between Inclusions and Cracks....Pages 245-267
Analysis of Cracks in Heterogeneous Solids....Pages 269-282
Crack Morphology in Relatively Brittle Crystals....Pages 283-295
Theory of Dynamic Strength....Pages 297-306
Front Matter....Pages 307-307
Fracture Mirrors in Polycrystalline Ceramics and Glass....Pages 309-321
Fractographic Identification of Strength-Controlling Flaws and Microstructure....Pages 323-345
Fracture Mechanics, Statistical Analysis and Fractography of Carbides and Metal Carbides Composites....Pages 347-366
Auger Spectroscopy of Fracture Surfaces of Ceramics....Pages 367-386
Front Matter....Pages 387-398
Scanning Electron Fractographic Study of Aluminum Oxide as a Function of Testing Temperature and Grain Size....Pages 307-307
Quantitative SEM and Raster Profilometer Analysis of Fracture Surfaces....Pages 399-420
Tensile Fragmentation of Virgin Glass Fibers....Pages 421-429
Back Matter....Pages 431-443
....Pages xv-xxviii