Download or read book Ambient and Elevated Temperature Fracture and Cyclic fatigue Properties of in Situ Toughened Ceramics written by Christopher Joseph Gilbert and published by . This book was released on 1996 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient and Elevated Temperature Fracture and Cyclic fatigue Properties in a Series of Al containing Silicon Carbides written by and published by . This book was released on 2004 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of in situ toughened, Al, B and C containing, silicon carbide ceramics (ABC-SiC) has been examined with Al contents varying from 3 to 7 wt%. With increasing Al additions, the grain morphology in the as-processed microstructures varied from elongated to bimodal to equiaxed, with a change in the nature of the grain-boundary film from amorphous to partially crystalline to fully crystalline. Fracture toughness and cyclic fatigue tests on these microstructures revealed that although the 7 wt.% Al containing material (7ABC) was extremely brittle, the 3 and particularly 5 wt.% Al materials (3ABC and 5ABC, respectively) displayed excellent crack-growth resistance at both ambient (25 C) and elevated (1300 C) temperatures. Indeed, no evidence of creep damage, in the form of grain-boundary cavitation, was seen at temperatures at 1300 C or below. The enhanced toughness of the higher Al-containing materials was associated with extensive crack bridging from both interlocking grains (in 3ABC) and uncracked ligaments (in 5ABC); in contrast, the 7ABC SiC showed no such bridging, concomitant with a marked reduction in the volume fraction of elongated grains. Mechanistically, cyclic fatigue-crack growth in 3ABC and 5ABC SiC involved the progressive degradation of such bridging ligaments in the crack wake, with the difference in the degree of elastic vs. frictional bridging affecting the slope, i.e., Paris law exponent, of the crack-growth curve. In addition an investigation of fracture resistance in non-transforming ceramics toughened by grain bridging mechanism is presented using linear elastic fracture mechanics (LEFM). Linear superposition theorems are used for the superposition of crack opening displacements, as well as stress intensity factors, resulting from the external tractions and the internal compressive bridging stresses. Specifically weight functions are used to relate the CODs, stress intensity factors, and tractions and the bridging stress. Expressions are derived for apparent material resistance, the bridging resistance and the intrinsic toughness, and an experimental procedure is proposed by which these predictions can be verified.

Download or read book Ambient and Elevated Temperature Fracture and Cyclic fatigue Properties of Boron modified Molybdenum Silicides written by Heeman Choe and published by . This book was released on 2001 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient and Elevated Temperature Fracture and Cyclic fatigue Properties in a Series of Al containing Silicon Carbide Ceramics written by Rong Yuan (M.S.) and published by . This book was released on 2004 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient and Elevated Temperature Fracture and Cyclic fatigue Properties in a Series of A1 containing Silicon Carbide Ceramics written by Jung Yüan and published by . This book was released on 2004 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient to High temperature Fracture Toughness and Cyclic Fatigue Behavior in Al containing Silicon Carbide Ceramics written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of in situ toughened, A1, B and C containing, silicon carbide ceramics (ABC-SiC) has been examined with A1 contents varying from 3 to 7 wt percent. With increasing A1 additions, the grain morphology in the as-processed microstructures varied from elongated to bimodal to equiaxed, with a change in the nature of the grain-boundary film from amorphous to partially crystalline to fully crystalline.

Download or read book Handbook of Advanced Ceramics written by Tatsuki Ohji and published by Elsevier Inc. Chapters. This book was released on 2013-04-11 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fracture Mechanics of Ceramics written by R.C. Bradt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: Second part of the proceedings of the Sixth International Symposium held in Karlsruhe, Germany, July 18-20, 1995.

Download or read book Fatigue of Ceramics at Elevated Temperatures written by and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-temperature mechanical properties of an in-situ toughened silicon carbide have been examined at temperatures from ambient to 1300C with the objective of optimizing structural performance.

Download or read book High temperature Cyclic Fatigue and Fracture Properties in Silicon Nitride Structural Ceramics written by Alexander Ziegler and published by . This book was released on 1999 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Properties of Ceramics written by John B. Wachtman and published by Wiley. This book was released on 2009-08-13 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Comprehensive and Self-Contained Treatment of the Theory and Practical Applications of Ceramic Materials When failure occurs in ceramic materials, it is often catastrophic, instantaneous, and total. Now in its Second Edition, this important book arms readers with a thorough and accurate understanding of the causes of these failures and how to design ceramics for failure avoidance. It systematically covers: Stress and strain Types of mechanical behavior Strength of defect-free solids Linear elastic fracture mechanics Measurements of elasticity, strength, and fracture toughness Subcritical crack propagation Toughening mechanisms in ceramics Effects of microstructure on toughness and strength Cyclic fatigue of ceramics Thermal stress and thermal shock in ceramics Fractography Dislocation and plastic deformation in ceramics Creep and superplasticity of ceramics Creep rupture at high temperatures and safe life design Hardness and wear And more While maintaining the first edition's reputation for being an indispensable professional resource, this new edition has been updated with sketches, explanations, figures, tables, summaries, and problem sets to make it more student-friendly as a textbook in undergraduate and graduate courses on the mechanical properties of ceramics.

Download or read book Fatigue and Fracture Behavior of High Temperature Materials written by Peter K. Liaw and published by John Wiley & Sons. This book was released on 2013-10-21 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue and Fracture Behavior of High Temperature Materials ...

Download or read book Cyclic Fatigue in Ceramics written by Hidehiro Kishimoto and published by Elsevier Science & Technology. This book was released on 1995 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardbound. Structural ceramics, such as silicon nitride, silicon carbide, alumina and zirconia have more potential than metallic materials for practical applications to various kinds of engineering components, especially for high temperature applications. For example, automotive engine parts, such as turbocharger rotors and swirl chambers, and ball bearing systems have been produced on a commercial basis using these materials for the last ten years. These industrial motivations have stimulated extensive progress in the research on evaluation of the strength properties of ceramics. In particular, cyclic fatigue has been investigated as one of the major concerns in the design of reliable ceramic components, and many researchers have been engaged in the field of cyclic fatigue in ceramics. As a result, new aspects such as crack bridging, R-curve behavior and fracture morphology have been clarified in the last decade.This book presents in three se

Download or read book Energy Materials Coordinating Committe EMaCC Fiscal Year 1996 Annual Technical Report written by and published by DIANE Publishing. This book was released on with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Shock and Thermal Fatigue Behavior of Advanced Ceramics written by Gerold A. Schneider and published by Springer Science & Business Media. This book was released on 1993-06-30 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Schloss Ringberg/Munich, Germany, November 8-13, 1992

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: