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Acoustic emission based method to characterise the damage modes in UD thin carbon/glass hybrid laminates: 17th European Conference on Composite Materials, ECCM 2016

Acoustic emission based method to characterise the damage modes in UD thin carbon/glass hybrid laminates: 17th European Conference on Composite Materials, ECCM 2016
Acoustic emission based method to characterise the damage modes in UD thin carbon/glass hybrid laminates: 17th European Conference on Composite Materials, ECCM 2016
The aim of this paper is to investigate the relationship between the features of acoustic emission (AE) signals and the corresponding damage modes in S-Glass/carbon UD hybrid laminates subjected to tensile loading. The investigated laminates were fabricated by sandwiching thin carbon plies between translucent standard thickness glass plies to produce pseudo-ductility. The gradual damage mechanisms identified included fragmentation of the carbon fibre and delamination of the glass/carbon interface, which were observable due to the translucent glass layers. Since the damage modes were observable, it was possible to establish qualitative and quantitative correlations between these observed failure modes and the features of the AE signals. Based on our observations, two significant failure modes occurred during the tests: i) fibre failure, which was associated with the high energy and amplitude range of the AE signals and ii) delamination, which was related to the low energy and amplitude range. These results demonstrate that AE signals provide potentially useful information to characterise damage modes in hybrid laminates, which could be especially useful when the laminate is thick or opaque, or when the damage is too small to be visible. Further, these results could be developed into a method or protocol for assessing damage in hybrid laminates.
acoustic emission, carbon/glass hybrid, fragmentation, pseudo ductility
European Conference on Composite Materials, ECCM
Fotouhi, Mohamad
71cada36-1cae-451d-8e3a-ab040cc7551a
Suwarta, Putu
03f07d7c-4d52-42a3-820e-8b8a9be9857f
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Czel, Gergely
a1f54093-b1d0-45c2-9468-1761f8899c2a
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Fotouhi, Mohamad
71cada36-1cae-451d-8e3a-ab040cc7551a
Suwarta, Putu
03f07d7c-4d52-42a3-820e-8b8a9be9857f
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Czel, Gergely
a1f54093-b1d0-45c2-9468-1761f8899c2a
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a

Fotouhi, Mohamad, Suwarta, Putu, Jalalvand, Meisam, Czel, Gergely and Wisnom, Michael R. (2016) Acoustic emission based method to characterise the damage modes in UD thin carbon/glass hybrid laminates: 17th European Conference on Composite Materials, ECCM 2016. In 17th European Conference on Composite Materials, ECCM 2016. European Conference on Composite Materials, ECCM..

Record type: Conference or Workshop Item (Paper)

Abstract

The aim of this paper is to investigate the relationship between the features of acoustic emission (AE) signals and the corresponding damage modes in S-Glass/carbon UD hybrid laminates subjected to tensile loading. The investigated laminates were fabricated by sandwiching thin carbon plies between translucent standard thickness glass plies to produce pseudo-ductility. The gradual damage mechanisms identified included fragmentation of the carbon fibre and delamination of the glass/carbon interface, which were observable due to the translucent glass layers. Since the damage modes were observable, it was possible to establish qualitative and quantitative correlations between these observed failure modes and the features of the AE signals. Based on our observations, two significant failure modes occurred during the tests: i) fibre failure, which was associated with the high energy and amplitude range of the AE signals and ii) delamination, which was related to the low energy and amplitude range. These results demonstrate that AE signals provide potentially useful information to characterise damage modes in hybrid laminates, which could be especially useful when the laminate is thick or opaque, or when the damage is too small to be visible. Further, these results could be developed into a method or protocol for assessing damage in hybrid laminates.

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More information

Published date: 30 June 2016
Venue - Dates: 17th European Conference on Composite Materials, ECCM 2016, , Munich, Germany, 2016-06-26 - 2016-06-30
Keywords: acoustic emission, carbon/glass hybrid, fragmentation, pseudo ductility

Identifiers

Local EPrints ID: 446769
URI: http://eprints.soton.ac.uk/id/eprint/446769
PURE UUID: f54b59e0-9d05-4dec-af19-a2e84beb4cf8
ORCID for Meisam Jalalvand: ORCID iD orcid.org/0000-0003-4691-6252

Catalogue record

Date deposited: 22 Feb 2021 17:31
Last modified: 23 Feb 2021 02:58

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Contributors

Author: Mohamad Fotouhi
Author: Putu Suwarta
Author: Gergely Czel
Author: Michael R. Wisnom

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