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Characterisation of tack for uni-directional prepreg tape employing a continuous application-and-peel test method

Endruweit, Andreas; Choong, Gabriel Y.H.; Ghose, Sayata; Johnson, Brice A.; Younkin, Douglas R.; Warrior, Nicholas A.; De Focatiis, Davide S.A.

Authors

Andreas Endruweit

Gabriel Y.H. Choong

Sayata Ghose

Brice A. Johnson

Douglas R. Younkin

Nicholas A. Warrior

Davide S.A. De Focatiis

Abstract

Employing a test method with coupled application and peel phases, tack was characterised for a UD prepreg tape. Different aspects of tack were explored by varying test parameters and material condition. In addition, different surface combinations were studied. In general, the test parameters, feed rate and temperature, affect the balance between cohesion within the resin and adhesion between resin and substrate. Exploring a range of parameters is required to understand the effect of viscoelastic resin properties on tack. The application pressure determines the true contact area between prepreg and substrate and hence affects tack. Changes in molecular mobility in the resin related to specimen conditioning, i.e. ageing or moisture uptake, result in maximum tack to occur at lower or higher feed rates, respectively. Differences in tack for different material combinations can be attributed to different molecular interactions at the contact interfaces and different resin distributions on the prepreg surfaces.

Journal Article Type Article
Publication Date Nov 30, 2018
Journal Composites Part A: Applied Science and Manufacturing
Print ISSN 1359-835X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 114
Pages 295-306
DOI https://doi.org/10.1016/j.compositesa.2018.08.027
Keywords Mechanics of Materials; Ceramics and Composites
Publisher URL https://www.sciencedirect.com/science/article/pii/S1359835X18303427
Additional Information This article is maintained by: Elsevier; Article Title: Characterisation of tack for uni-directional prepreg tape employing a continuous application-and-peel test method; Journal Title: Composites Part A: Applied Science and Manufacturing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.compositesa.2018.08.027; Content Type: article; Copyright: © 2018 Elsevier Ltd. All rights reserved.

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