Strength Of A Ceramic Sectored Flexural Test Specimen
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| Author | : A. A. Wereszczak |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 2008 |
| Genre | : Ceramics |
| ISBN | : |
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 | : Tatsuki Ohji |
| Publisher | : John Wiley & Sons |
| Total Pages | : 538 |
| Release | : 2016-02-01 |
| Genre | : Technology & Engineering |
| ISBN | : 1119100402 |
In this book project, all the American Ceramic Society's Engineering Ceramics Division Mueller and Bridge Building Award Winners, the ICACC Plenary Speakers and the past Engineering Ceramics Division Chairs have been invited to write book chapters on a topic that is compatible with their technical interests and consistent with the scope of the book, which is to focus on the current status and future prospects of various technical topics related to engineering ceramics, advanced ceramics and composite materials. Topics include: Mechanical Behavior and Performance of Ceramics & Composites Non-Destructive Evaluation and Mechanical Testing of Engineering Ceramics Brittle and Composite Material Design Modern Fracture Mechanics of Ceramics Thermal/Environmental Barrier Coatings Advanced Ceramic Coatings for Functional Applications Advanced Ceramic Joining Technologies Ceramics for Machining, Friction, Wear, and Other Tribological Applications Ceramic Composites for High-Temperature Aerospace Structures and Propulsion Systems Thermal Protection Materials: From Retrospect to Foresight Carbon/Carbon Composites Ceramic-Matrix Composites for Lightweight Construction Ultra High-Temperature Ceramics (UHTC) Nanolaminated Ternary Carbides and Nitrides (MAX Phases) Ceramics for Heat Engine and Other Energy Related Applications Solid Oxide Fuel Cells (SOFC) Armor Ceramics Next Generation Bioceramics Ceramics for Innovative Energy and Storage Systems Designing Ceramics for Electrochemical Energy Storage Devices Nanostructured Materials and Nanotechnology Advanced Ceramic Processing and Manufacturing Technologies Engineering Porous Ceramics Thermal Management Materials and Technologies Geopolymers Advanced Ceramic Sensor Technology Advanced Ceramics and Composites for Nuclear and Fusion Applications Advanced Ceramic Technologies for Rechargeable Batteries
| Author | : Rajan Tandon |
| Publisher | : John Wiley & Sons |
| Total Pages | : 801 |
| Release | : 2009-09-29 |
| Genre | : Technology & Engineering |
| ISBN | : 0470291729 |
This volume contains over 70 papers on advanced research and development of processing, mechanical properties and mechanics of ceramics and composites from the proceedings of the 30th International Conference on Advanced Ceramics and Composites, January 22-27, 2006, in Cocoa Beach, Florida. The conference was organized and sponsored by The American Ceramic Society and The American Ceramic Society's Engineering Ceramics Division in conjunction with the Nuclear and Environmental Technology Division. It covers underlying fundamental links between microstructure and properties, and the ability to achieve desired multifunctional properties through innovative processing techniques.
| Author | : |
| Publisher | : |
| Total Pages | : 0 |
| Release | : |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 30 |
| Release | : 1990 |
| Genre | : Ceramic materials |
| ISBN | : |
| Author | : George D. Quinn |
| Publisher | : |
| Total Pages | : 23 |
| Release | : 2009 |
| Genre | : Brittle materials |
| ISBN | : |
Flexural testing is the most common method used to measure the uniaxial tensile strength of ceramics and glasses. Although standard test methods have been developed for rectangular specimens, cylindrical rod specimens may be preferred in many cases. This paper summarizes how rods have been tested in the past, identifies key experimental errors and remedies, and serves as the foundation for a new standard test method for ceramics and glasses.
| Author | : Roger Narayan |
| Publisher | : John Wiley & Sons |
| Total Pages | : 222 |
| Release | : 2012-11-30 |
| Genre | : Technology & Engineering |
| ISBN | : 1118530500 |
This issue of the Ceramic Engineering and Science Proceedings is one of nine issues published based on content presented in January 2012, during the 36th International Conference on Advanced Ceramics and Composites (ICACC). It features papers from two popular symposia held during the ICACC meeting: Next-Generation Bioceramics explores new research into ceramic materials designed to support and enhance the treatment of dental and medical disorders; Porous Ceramics: Novel Developments and Applications examines some of the latest advances and innovations in processing methods and synthesis, and much more. Charts, tables, and illustrations are included throughout this issue.
| Author | : Rahul Jain |
| Publisher | : |
| Total Pages | : 177 |
| Release | : 2008 |
| Genre | : Ceramics |
| ISBN | : |
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 | : Stephen F. Duffy |
| Publisher | : |
| Total Pages | : 36 |
| Release | : 2005 |
| Genre | : Ceramic materials |
| ISBN | : |
Two test specimen geometries obtained from circumferentially machined, tubular components have been proposed to investigate different flaw populations that might be present in a ceramic gun barrel. C-ring specimens tested in compression will generate maximum tensile stress states at the outer surface of the barrel. This stress state will activate critical flaws that are oriented parallel to the long axis of the tube. The sectored flexure bar specimen tested in four-point flexure will activate flaws aligned circumferentially around the tube. There is a need to take failure data from these tests and transform the information so that material characteristic strengths can be computed for subsequent Weibull analyses conducted on the gun barrel component. In order to compute the material characteristic strengths, the requisite Weibull effective area and/or effective volume parameters must be obtained. The procedure for numerically computing the Weibull effective area and effective volume for C-ring and sectored flexural test specimens is detailed in this article.
| Author | : British Standards Institute Staff |
| Publisher | : |
| Total Pages | : 20 |
| Release | : 1995-03-01 |
| Genre | : |
| ISBN | : 9780580231407 |
Special ceramics, Ceramics, Monolithic materials, Bend testing, Test equipment, Test specimens, Specimen preparation, Dimensions, Roughness (surface), Testing conditions, Mathematical calculations
