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Published October 2013 | Version Supplemental Material
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In situ imaging and strain determination during fracture in a SiC/SiC ceramic matrix composite

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Abstract

A combined imaging and microdiffraction technique using high-energy synchrotron X-rays is described and used to reveal microstructure, damage and strain evolution around notches in SiC/SiC composites. This technique allows for monitoring the material for cracks while loading and mapping the strain distribution in fibers and matrix with a resolution of tens of microns. We show that at current resolutions this technique is capable of measuring the strain distribution near crack tips in ceramic matrix composites and observe load transfer effects.

Additional Information

© 2013 Acta Materialia Inc. Published by Elsevier Ltd. Received 26 February 2013; revised 11 May 2013; accepted 19 May 2013; Available online 31 May 2013. We are grateful to Dr. G. Morscher, who provided us with the CMC specimens. This work was supported by the Initiative for Sustainability and Energy at Northwestern University (ISEN), and by the Department of Energy, Office of Basic Energy Science, under contract number DE-AC02-06CH11357. Microscopy images were collected at the NUANCE Center at Northwestern University, which is supported by the MRSEC program of the National Science Foundation DMR-1121262). J.R.-R. is grateful to the Universidad de Sevilla for a travel grant under the IV Plan propio de Investigacion. This work is dedicated to the memory of J. L. Routbort, who passed away during the preparation of this manuscript.

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Additional details

Identifiers

Eprint ID
47187
DOI
10.1016/j.scriptamat.2013.05.032
Resolver ID
CaltechAUTHORS:20140714-143238554

Funding

Northwestern University Initiative for Sustainability and Energy
Department of Energy (DOE)
DE-AC02-06CH11357
NSF
DMR-1121262
Universidad de Sevilla

Dates

Created
2014-07-14
Created from EPrint's datestamp field
Updated
2021-11-10
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