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Damage Development in SiCf/SiC Composites Through Mechanical Loading

Martin Bache, J. Paul Jones, Zak Quiney, Louise Gale

ASME Proceedings: Ceramics, Start page: V006T02A006

Swansea University Author: Martin Bache

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DOI (Published version): 10.1115/GT2017-64370

Abstract

Sophisticated mechanical characterisation is vital in support of a fundamental understanding of deformation in ceramic matrix composites. On the component scale, “damage tolerant” design and lifing philosophies depend upon laboratory assessments of macro-scale specimens, incorporating typical fibre...

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Published in: ASME Proceedings: Ceramics
ISBN: 978-0-7918-5091-6
Published: Charlotte, North Carolina, USA ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition 2017
URI: https://cronfa.swan.ac.uk/Record/cronfa35634
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first_indexed 2017-09-25T18:57:59Z
last_indexed 2018-02-09T05:27:02Z
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spelling 2017-09-25T14:41:41.4177525 v2 35634 2017-09-25 Damage Development in SiCf/SiC Composites Through Mechanical Loading 3453423659f6bcfddcd0a716c6b0e36a Martin Bache Martin Bache true false 2017-09-25 FGSEN Sophisticated mechanical characterisation is vital in support of a fundamental understanding of deformation in ceramic matrix composites. On the component scale, “damage tolerant” design and lifing philosophies depend upon laboratory assessments of macro-scale specimens, incorporating typical fibre architectures and matrix under representative stress-strain states.Standard SiCf/SiC processing techniques inherently introduce porosity between the individual reinforcing fibres and between woven fibre bundles. Subsequent mechanical loading (static or cyclic) may initiate cracking from these stress concentrations in addition to fibre/matrix decohesion and delamination. The localised coalescence of such damage ultimately leads to rapid failure.Proven techniques for the monitoring of damage in structural metallics, i.e. optical microscopy, potential drop systems, acoustic emission (AE) and digital image correlation (DIC), have been adapted for the characterisation of CMC’s tested at room temperature. As processed SiCf/SiC panels were subjected to detailed X-ray computed tomography (XCT) inspection prior to specimen extraction and subsequent static and cyclic mechanical testing to verify their condition. DIC strain measurements, acoustic emission and resistance monitoring were performed and correlated to monitor the onset of damage during loading, followed by intermittent XCT inspections throughout the course of selected tests. Conference Paper/Proceeding/Abstract ASME Proceedings: Ceramics V006T02A006 ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition Charlotte, North Carolina, USA 978-0-7918-5091-6 Composite materials , Damage 31 12 2017 2017-12-31 10.1115/GT2017-64370 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2017-09-25T14:41:41.4177525 2017-09-25T14:35:55.6868349 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Martin Bache 1 J. Paul Jones 2 Zak Quiney 3 Louise Gale 4
title Damage Development in SiCf/SiC Composites Through Mechanical Loading
spellingShingle Damage Development in SiCf/SiC Composites Through Mechanical Loading
Martin Bache
title_short Damage Development in SiCf/SiC Composites Through Mechanical Loading
title_full Damage Development in SiCf/SiC Composites Through Mechanical Loading
title_fullStr Damage Development in SiCf/SiC Composites Through Mechanical Loading
title_full_unstemmed Damage Development in SiCf/SiC Composites Through Mechanical Loading
title_sort Damage Development in SiCf/SiC Composites Through Mechanical Loading
author_id_str_mv 3453423659f6bcfddcd0a716c6b0e36a
author_id_fullname_str_mv 3453423659f6bcfddcd0a716c6b0e36a_***_Martin Bache
author Martin Bache
author2 Martin Bache
J. Paul Jones
Zak Quiney
Louise Gale
format Conference Paper/Proceeding/Abstract
container_title ASME Proceedings: Ceramics
container_start_page V006T02A006
publishDate 2017
institution Swansea University
isbn 978-0-7918-5091-6
doi_str_mv 10.1115/GT2017-64370
publisher ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description Sophisticated mechanical characterisation is vital in support of a fundamental understanding of deformation in ceramic matrix composites. On the component scale, “damage tolerant” design and lifing philosophies depend upon laboratory assessments of macro-scale specimens, incorporating typical fibre architectures and matrix under representative stress-strain states.Standard SiCf/SiC processing techniques inherently introduce porosity between the individual reinforcing fibres and between woven fibre bundles. Subsequent mechanical loading (static or cyclic) may initiate cracking from these stress concentrations in addition to fibre/matrix decohesion and delamination. The localised coalescence of such damage ultimately leads to rapid failure.Proven techniques for the monitoring of damage in structural metallics, i.e. optical microscopy, potential drop systems, acoustic emission (AE) and digital image correlation (DIC), have been adapted for the characterisation of CMC’s tested at room temperature. As processed SiCf/SiC panels were subjected to detailed X-ray computed tomography (XCT) inspection prior to specimen extraction and subsequent static and cyclic mechanical testing to verify their condition. DIC strain measurements, acoustic emission and resistance monitoring were performed and correlated to monitor the onset of damage during loading, followed by intermittent XCT inspections throughout the course of selected tests.
published_date 2017-12-31T03:44:23Z
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score 11.017731

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