@article{Chen:2018:10.1016/j.ijplas.2017.11.005,
author = {Chen, B and Jiang, J and Dunne, FPE},
doi = {10.1016/j.ijplas.2017.11.005},
journal = {International Journal of Plasticity},
pages = {213--229},
title = {Is stored energy density the primary meso-scale mechanistic driver for fatigue crack nucleation?},
url = {http://dx.doi.org/10.1016/j.ijplas.2017.11.005},
volume = {101},
year = {2018}
}

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TY  - JOUR
AB  - Fatigue crack nucleation in a powder metallurgy produced nickel alloy containing a non-metallic inclusion has been investigated through integrated small-scale bend testing, quantitative characterisation (HR-DIC and HR-EBSD) and computational crystal plasticity which replicated the polycrystal morphology, texture and loading. Multiple crack nucleations occurred at the nickel matrix-inclusion interface and both nucleation and growth were found to be crystallographic with highest slip system activation driving crack direction. Local slip accumulation was found to be a necessary condition for crack nucleation, and that in addition, local stress and density of geometrically necessary dislocations are involved. Fatemi-Socie and dissipated energy were also assessed against the experimental data, showing generally good, but not complete agreement. However, the local stored energy density (of a Griffith-Stroh kind) identified all the crack nucleation sites as those giving the highest magnitudes of stored energy.
AU  - Chen,B
AU  - Jiang,J
AU  - Dunne,FPE
DO  - 10.1016/j.ijplas.2017.11.005
EP  - 229
PY  - 2018///
SN  - 0749-6419
SP  - 213
TI  - Is stored energy density the primary meso-scale mechanistic driver for fatigue crack nucleation?
T2  - International Journal of Plasticity
UR  - http://dx.doi.org/10.1016/j.ijplas.2017.11.005
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000423655200011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S0749641917305132
UR  - http://hdl.handle.net/10044/1/61871
VL  - 101
ER  - 

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