@inproceedings{8124ad38f5a04dea8a44ac8d30281328,
title = "Prediction of ductile fracture toughness",
abstract = "Inspired by recent multiscale modeling of void/microvoid interaction in ductile fracture, a new analysis of literature data on ultrahigh strength martensitic steels shows that JIC toughness normalized by primary inclusion mean spacing is parabolically related to the measured critical primary void size ratio. Interpreting this critical ratio as a measure of the critical intervoid ligament strain for primary void coalescence by finer scale microvoid instability, calculation of the critical strain from Rice-Tracey void growth shows that JIC toughness is exponentially related to the critical microvoid instability strain. This represents a far stronger sensitivity to critical strain than the previously assumed linear scaling. An approximate correlation of this critical strain to macroscopic fracture ductility allows an estimate of fracture toughness.",
author = "Wang, {J. S.} and Olson, {G. B.}",
year = "2009",
language = "English (US)",
isbn = "9781617382277",
series = "12th International Conference on Fracture 2009, ICF-12",
pages = "145--154",
booktitle = "12th International Conference on Fracture 2009, ICF-12",
note = "12th International Conference on Fracture 2009, ICF-12 ; Conference date: 12-07-2009 Through 17-07-2009",
}