NDLI: Method for the determination of the characteristics of crack resistance of elastoplastic materials

Content Provider	Springer Nature Link
Author	Ivanyts’kyi, Ya. L. Shtayura, S. Т. Kowalik, M.
Copyright Year	2012
Abstract	We propose a procedure for the determination of the level of strains, the length of the plastic zone, and crack-tip opening displacements based on the use of the digital speckle-correlation method and the data of strain-gauge measurements under the conditions of uniaxial and biaxial tension of a plate weakened by a central crack. It is experimentally established that the size of the plastic zone near the crack tip for a given material is independent of the gauge length but changes if we pass to biaxial loading. On the basis of the solution of the elastoplastic problem of limiting equilibrium of a plate weakened by a crack obtained within the framework of the δ$_{ c }$ -model, we deduce the formula for the evaluation the mean value of crack resistance of the material ( $ {\tilde{\delta }_c} $ ) and the length of the plastic zone (lp $_{*}$). The influence of biaxial loading on the size of this zone is estimated.
Starting Page	12
Ending Page	19
Page Count	8
File Format	PDF
ISSN	1068820X
Journal	Materials Science
Volume Number	48
Issue Number	1
e-ISSN	1573885X
Language	English
Publisher	Springer US
Publisher Date	2012-08-22
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	crack-tip opening displacements strains in the process zone length of the plastic zone digital correlation of speckle images uniaxial and biaxial loading Characterization and Evaluation of Materials Structural Materials Materials Science Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering

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