Lifitime Prediction for Ceramic Tubular Components / OM. Jadaan

Conference Author:: Life Prediction Methodologies and Data for Ceramic Materials (1993 : Cocoa Beach, FL)
Physical Description:: 1 online resource (24 pages) : illustrations, figures, tables
Additional Creators:: Jadaan, OM., American Society for Testing and Materials, and ASTM International

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Summary:

The main objective of this research is to develop experimental and analytical methodologies to predict the lifetimes for internally pressurized SiC tubes from the lifetimes of simple specimens subjected to similar delayed failure modes. In general, two different mechanisms are responsible for delayed failure behavior in ceramics, depending on the material, microstructure, size of inherent flaws, and the level af applied stress. These delayed failure mechanisms are slow crack growth (SCG) and creep rupture. In this paper, a methodology to predict the lifetimes for sintered alpha silicon carbide (SASC) tubes, expected to fail due to SCG mechanism, will be shown. This methodology involved experimental determination of the SCG parameters for the SASC material and the scaling analysis to project the stress rupture data for small specimens (O-rings and compressed C-rings) to large tubular components. Also included in this paper is a methodology to predict the lifetimes for internally pressurized reaction bonded silicon carbide (SCRB210) tubes, for which delayed failure behavior is expected to be controlled by creep rupture mechanism. Finite element analysis (FEM) in association with the Monkman-Grant creep rupture criterion, were used to predict the lifetimes for the SCRB210 tubes. The relationship between the two delayed failure mechanisms, specimen size and applied stress level will also be discussed.

Dates of Publication and/or Sequential Designation:

Volume 1994, Issue 1201 (January 1994)

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ISBN:

9780803152687 (e-ISBN)
9780803118645
0803118643

Digital File Characteristics:

text file PDF

Bibliography Note:

Includes bibliographical references 36.

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Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Reproduction Note:

Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1994. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.

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Mode of access: World Wide Web.

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ASTM International PDF Purchase price USD25.

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