A New Approach to Measuring Local Properties of Preforms Enhanced for Formability

Forming of dry engineering textiles is a quality-critical operation in composites manufacturing. There are various different defect mitigation strategies that have been developed to ensure that material will not wrinkle or fold when depositing and forming. One promising direction is the modification...

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Main Authors: Mark A. Turk, Hengli Cao, Adam J. Thompson, Jonathan P-H. Belnoue, Stephen R. Hallett, Dmitry S. Ivanov
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-04-01
Series:Frontiers in Materials
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmats.2022.867591/full
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author Mark A. Turk
Hengli Cao
Adam J. Thompson
Jonathan P-H. Belnoue
Stephen R. Hallett
Dmitry S. Ivanov
author_facet Mark A. Turk
Hengli Cao
Adam J. Thompson
Jonathan P-H. Belnoue
Stephen R. Hallett
Dmitry S. Ivanov
author_sort Mark A. Turk
collection DOAJ
description Forming of dry engineering textiles is a quality-critical operation in composites manufacturing. There are various different defect mitigation strategies that have been developed to ensure that material will not wrinkle or fold when depositing and forming. One promising direction is the modification of textile properties in the regions where a defect is likely to form. This can be achieved by the integration of patches: additional materials, such as reactive thermally-conditioned resins, tufted or stitched yarns, thermoplastic films, locally activated binder, etc. This method is simple and effective for a certain class of forming problems. The success of the forming operation depends on the balance of properties between dry and patched materials. At present, there is no clearly established methodology for the characterisation of these formability enhancements. Patches are local and an isolated coupon often cannot be extracted from a hosting fabric. This paper discusses the feasibility of adapting the conventional bias extension test to extract the shear properties of locally enhanced material. The obtained properties are critical for modelling tools that can inform the optimum patch location and orientation. The suggested approach is practical, simple to implement and proven to provide properties to a reasonable degree of accuracy for non-linear elastic and visco-elastic patch behaviours.
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spelling doaj.art-4571d8f28b78494ba4dc383f7f1e31262022-12-22T01:53:48ZengFrontiers Media S.A.Frontiers in Materials2296-80162022-04-01910.3389/fmats.2022.867591867591A New Approach to Measuring Local Properties of Preforms Enhanced for FormabilityMark A. TurkHengli CaoAdam J. ThompsonJonathan P-H. BelnoueStephen R. HallettDmitry S. IvanovForming of dry engineering textiles is a quality-critical operation in composites manufacturing. There are various different defect mitigation strategies that have been developed to ensure that material will not wrinkle or fold when depositing and forming. One promising direction is the modification of textile properties in the regions where a defect is likely to form. This can be achieved by the integration of patches: additional materials, such as reactive thermally-conditioned resins, tufted or stitched yarns, thermoplastic films, locally activated binder, etc. This method is simple and effective for a certain class of forming problems. The success of the forming operation depends on the balance of properties between dry and patched materials. At present, there is no clearly established methodology for the characterisation of these formability enhancements. Patches are local and an isolated coupon often cannot be extracted from a hosting fabric. This paper discusses the feasibility of adapting the conventional bias extension test to extract the shear properties of locally enhanced material. The obtained properties are critical for modelling tools that can inform the optimum patch location and orientation. The suggested approach is practical, simple to implement and proven to provide properties to a reasonable degree of accuracy for non-linear elastic and visco-elastic patch behaviours.https://www.frontiersin.org/articles/10.3389/fmats.2022.867591/fullformingliquid mouldingbias extensionlocal propertiespreform
spellingShingle Mark A. Turk
Hengli Cao
Adam J. Thompson
Jonathan P-H. Belnoue
Stephen R. Hallett
Dmitry S. Ivanov
A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
Frontiers in Materials
forming
liquid moulding
bias extension
local properties
preform
title A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
title_full A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
title_fullStr A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
title_full_unstemmed A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
title_short A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
title_sort new approach to measuring local properties of preforms enhanced for formability
topic forming
liquid moulding
bias extension
local properties
preform
url https://www.frontiersin.org/articles/10.3389/fmats.2022.867591/full
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