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Crack-path effect on material toughnessThe main features of a toughening mechanism associated with a curvilinear crack path are examined using a model consisting of a macrocrack in a brittle solid with a curvilinear segment at the crack tip. A numerical procedure for finite and semiinfinite cracks is formulated and evaluated using an example which has an exact solution (a finite crack in the form of a circular arc in a uniform stress field). It is shown that, for a relatively small amplitude of crack path oscillations, the toughening ratio can be taken equal to the ratio of the corresponding crack path lengths.
Document ID
19900041700
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rubinstein, Asher A.
(Tulane University New Orleans, LA, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: ASME, Transactions, Journal of Applied Mechanics
Volume: 57
ISSN: 0021-8936
Subject Category
Structural Mechanics
Report/Patent Number
ASME PAPER 89-WA/APM-43
Accession Number
90A28755
Funding Number(s)
CONTRACT_GRANT: NAG3-815
Distribution Limits
Public
Copyright
Other

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