Interpretation of Plasticity Effects Using the CJP Crack Tip Field Model



James, M Neil, Christopher, Colin J, Díaz Garrido, Francisco Alberto, Vasco-Olmo, Jose M, Kakiuchi, Toshifumi and Patterson, Eann A ORCID: 0000-0003-4397-2160
(2016) Interpretation of Plasticity Effects Using the CJP Crack Tip Field Model. .

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Abstract

<jats:p>This paper will outline the development of a model of crack tip fields that represents an innovation in incorporate the influences on crack tip displacement and stress fields of the zone of local plasticity that envelops a growing fatigue crack. The model uses assumed distributions of elastic stresses induced at the elastic-plastic boundary via wake contact and compatibility requirements, and defines a set of modified elastic stress intensity factors to characterise the crack stress or displacement tip field. In particular, recent work will be presented that compares the interpretation of plasticity-induced shielding obtained from trends observed in K<jats:sub>R</jats:sub> and K<jats:sub>F</jats:sub> with values of so-called ‘crack closure’ obtained via traditional strain gauge determination.</jats:p>

Item Type: Conference or Workshop Item (Unspecified)
Depositing User: Symplectic Admin
Date Deposited: 07 Feb 2017 15:49
Last Modified: 30 Jun 2021 15:10
DOI: 10.4028/www.scientific.net/ssp.258.117
URI: https://livrepository.liverpool.ac.uk/id/eprint/3005532