Chevron-Notched Toughness of Materials with Rising Fracture Resistance Curves
The effect of rising resistance curves on the fracture tougness determined from chevron‐notched beam tests is estimated via a set of simple numerical calculations. It is shown that for materials with a rising resistance curve, the toughnesses determined by the peak load method and by the work of fra...
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Published in | Journal of the American Ceramic Society Vol. 80; no. 5; pp. 1319 - 1322 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Westerville, Ohio
American Ceramics Society
01.05.1997
Blackwell |
Subjects | |
Online Access | Get full text |
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Summary: | The effect of rising resistance curves on the fracture tougness determined from chevron‐notched beam tests is estimated via a set of simple numerical calculations. It is shown that for materials with a rising resistance curve, the toughnesses determined by the peak load method and by the work of fracture method are both higher than the initiation toughness, and both depend on the sample size relative to the length over which the resistance curve increases. It is also found that the toughness based on the work of fracture is higher than that based on the peak load. Fracture toughness data obtained from tests of a nickel–alumina composite are discussed in light of the results of the numerical calculation. |
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Bibliography: | ark:/67375/WNG-6NC6GRFN-D ArticleID:JACE1319 istex:5B5637DA2BF2E812B5CD683D6BA5CB0C70FACF44 Supported by the Air Force Office of Scientific Research under Grant No. F49620–93–1–0235. Member, American Ceramic Society. D. B. Marshall—contributing editor ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0002-7820 1551-2916 |
DOI: | 10.1111/j.1151-2916.1997.tb02987.x |