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Author: Rahul Jain Publisher: ISBN: Category : Ceramics Languages : en Pages : 177
Book Description
Calculation of effective volume and/or effective area is a key step in estimating reliability of ceramic component life cycle. Most common tests performed to assess the strength and reliability of components made from ceramics are bend bar specimens tested in three-point and four-point flexure, C-ring and O-ring specimen under diametral compressive or tensile loads and biaxial ring-on-ring specimens. ASTM closed form solutions for the effective volume and area exists for these specimen geometries which are based on classical theories with underlying assumptions. In general the closed form expressions are valid for limited specimen geometry bounds. An alternative numerical approach has been utilized to calculate the effective volume and area for the ceramic test specimens. The results obtained through the use of the numerical approach are compared with the closed form solutions and these comparisons point to the need for revisiting the underlying assumptions used in developing the closed form expressions.
Author: Rahul Jain Publisher: ISBN: Category : Ceramics Languages : en Pages : 177
Book Description
Calculation of effective volume and/or effective area is a key step in estimating reliability of ceramic component life cycle. Most common tests performed to assess the strength and reliability of components made from ceramics are bend bar specimens tested in three-point and four-point flexure, C-ring and O-ring specimen under diametral compressive or tensile loads and biaxial ring-on-ring specimens. ASTM closed form solutions for the effective volume and area exists for these specimen geometries which are based on classical theories with underlying assumptions. In general the closed form expressions are valid for limited specimen geometry bounds. An alternative numerical approach has been utilized to calculate the effective volume and area for the ceramic test specimens. The results obtained through the use of the numerical approach are compared with the closed form solutions and these comparisons point to the need for revisiting the underlying assumptions used in developing the closed form expressions.
Author: David C. Cranmer Publisher: CRC Press ISBN: 1482273411 Category : Technology & Engineering Languages : en Pages : 449
Book Description
Describing the theoretical aspects of chemistry and microstructure that affect mechanical properties, this work offers coverage of ceramic mechanical property measurement techniques for use in component design as well as lifetime and reliability predictions. It presents procedures from both room- and elevated-temperature applications.
Author: Waltraud M. Kriven Publisher: John Wiley & Sons ISBN: 0470295252 Category : Technology & Engineering Languages : en Pages : 644
Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Author: SF. Duffy Publisher: ISBN: Category : C-ring test specimens Languages : en Pages : 6
Book Description
C-ring specimen geometries are used to ascertain Weibull parameters for spatially distributed flaw populations in ceramic gun barrels. A review of previously published results used to compute effective areas and effective volumes for this test specimen geometry is presented along with deficiencies associated with these computations. In addition, the results of the numerical analyses presented utilizing finite-element analysis and component level reliability algorithms clearly indicate that geometric constraints called out in the current ASTM standard for C-ring testing must be revised.
Author: R.J. Brook Publisher: Elsevier ISBN: 0080983707 Category : Technology & Engineering Languages : en Pages : 605
Book Description
Advanced ceramics cover a wide range of materials which are ceramic by nature but have been developed in response to specific requirements. This encyclopedia collects together 137 articles in order to provide an up-to-date account of the advanced ceramic field. Some articles are drawn from the acclaimed Encyclopedia of Materials Science and Engineering, often revised, and others have been newly commissioned. The Concise Encyclopedia of Advanced Ceramic Materials aims to provide a comprehensive selection of accessible articles which act as an authoritative guide to the subject. The format is designed to help the readers form opinions on a particular subject. Arranged alphabetically, with a broad subject range, the articles are diverse in character and style, thereby stimulating further discussion. Topics covered include survey articles on glass, hot pressing, insulators, powders, and many are concerned with specific chemical systems and their origins, processing and applications. The Concise Encyclopedia of Advanced Ceramic Materials will be invaluable to materials scientists, researchers, educators and industrialists working in technical ceramics.
Author: A. A. Wereszczak Publisher: ISBN: Category : Ceramics Languages : en Pages : 7
Book Description
A new test specimen, defined here as the "sectored flexural strength test specimen," was developed to measure the strength of ceramic tubes specifically for circumstances when flaws located at the tube's outer diameter are the strength-limiter when subjected to axial tension. The understanding of such strength-limitation is relevant when ceramic tubes are subjected to bending or when the internal temperature is hotter than the tube's exterior (e.g., heat exchangers). The test specimen is both economically and statistically attractive because eight test specimens (eight in the case of this project?but the user is not necessarily limited to eight) were extracted out of each length of tube. An analytic expression for maximum (or failure) stress, and relationships portraying effective area and effective volume as a function of Weibull modulus were developed. Lastly, it was shown through the testing of two ceramics that the sectored flexural specimen was very effective; it produced failures caused by strength-limiting flaws located on the tube's original outer diameter.
Author: Ersan Ustundag Publisher: John Wiley & Sons ISBN: 0470295031 Category : Technology & Engineering Languages : en Pages : 619
Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Author: Shigeyuki Somiya Publisher: Elsevier ISBN: 0323154018 Category : Technology & Engineering Languages : en Pages : 366
Book Description
Advanced Technical Ceramics provides a thorough overview of technical ceramics. This book is divided into three parts encompassing 13 chapters that cover all aspects of technical ceramics, including definitions, raw materials, electronic and mechanical materials and processes, and biomaterials. Part I deals with the classification of ceramics by their chemical composition, mineral content, processing and production methods, properties, and uses. This part also includes the synthetic raw materials, production processes, and thermo-mechanical properties of ceramics. Part II describes the electrical, electronic, magnetic, thermal, chemical, and optical properties of ceramics, as well as their biomedical applications. Part III focuses on several precision machining methods for ceramics, such as cutting, grinding, lapping, polishing, and laser processing. Ceramics scientists, engineers, and researchers will find this text invaluable.
Author: Rahul Jain
Author: Rahul Jain
Author: David C. Cranmer
Author: Andrew Irving Andrews
Author: Waltraud M. Kriven
Author: SF. Duffy
Author: S. F. Duffy
Author: R.J. Brook
Author: A. A. Wereszczak
Author: Ersan Ustundag
Author: Shigeyuki Somiya