Crack tip shielding from a plastic 'inclusion'
James, M.N., Christopher, C.J., Lu, Yanwei, Tee, K.F. and Patterson, E.A. (2011) Crack tip shielding from a plastic 'inclusion'. Key Engineering Materials , 465 (1). pp. 1-8. ISSN 1662-9795 (doi:10.4028/www.scientific.net/KEM.465.1)Full text not available from this repository.
This paper presents a very brief overview of the philosophy underlying a plastic inclusion approach to defining the boundary stresses imposed on the applied elastic stress or displacement field by the plastic deformation attendant on crack growth in a ductile material. It leads to two new fracture mechanics parameters, KR and KS. KR defines a retardation component arising from wake contact and the Poisson’s contraction associated with the plastic zone, whilst KS describes a compatibility-induced component arising from shear at the elastic-plastic interface. These additional components imply that KF is not directly comparable with KI, as it describes the net driving force on the crack from the applied load.
|Additional Information:|| Volume title - Materials Structure & Micromechanics of Fracture VI|
|Uncontrolled Keywords:||t-stress, crack shielding, crack tip displacement, crack tip stress, digital image correlation (DIC), Muskhelishvili, plastic enclave|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|School / Department / Research Groups:||School of Engineering
Faculty of Engineering & Science > School of Engineering
School of Engineering > Department of Civil Engineering
Faculty of Engineering & Science > School of Engineering > Department of Civil Engineering
|Last Modified:||15 Apr 2013 14:16|
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