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arXiv · 1604.03814

Systematic and objective identification of the microstructure around damage directly from images

T. W. J. de Geus·C. Du·J. P. M. Hoefnagels·R. H. J. Peerlings·M. G. D. Geers
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Abstract

An original experimental approach is presented to automatically determine the average phase distribution around damage sites in multi-phase materials. An objective measure is found to be the average intensity around damage sites, calculated using many images. This method has the following benefits: no phase identification or manual interventions are required, and statistical fluctuations and measurement noise are effectively averaged. The method is demonstrated for dual-phase steel, revealing subtle unexpected differences in the morphology surrounding damage in strongly and weakly banded microstructures.

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T. W. J. de Geus, C. Du, J. P. M. Hoefnagels, R. H. J. Peerlings, M. G. D. Geers. 2016-04-13. Systematic and objective identification of the microstructure around damage directly from images. https://doi.org/10.1016/j.scriptamat.2015.10.007

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