The Role of Semi-Curing in Liquid Composite Moulding

Michael O'Leary, James Kratz, Turlough McMahon

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

This study investigates how Semi-Cured interfaces form and preform in Liquid Composite Moulding processes in order to support the drive towards low cost and high rate manufacture of complex composites. A two-step program was devised. Firstly, the effect on neat resin toughness properties arising from additional thermal cycling needed for Semi-Curing was explored. This confirmed that the Semi-Curing process had little effect on plane-strain fracture toughness values. Secondly, Semi-Cured laminates with elements initially cured to varying degrees of cure were manufactured and tested in Mode I and Mode II. The results of these tests indicated interfacial properties are fully retained in Mode II and a reduction in Mode I is seen after the resin enters the post-gel stage. These initial results demonstrate the usefulness of Semi-Curing to integrate preforms up until the gel point of the material.

Original languageEnglish
Title of host publicationProceedings of the American Society for Composites - 37th Technical Conference, ASC 2022
EditorsOlesya Zhupanska, Erdogan Madenci
PublisherDEStech Publications, Inc.
ISBN (Electronic)9781605956909
Publication statusPublished - 2022
Event37th Technical Conference of the American Society for Composites, ASC 2022 - Tucson, United States
Duration: 19 Sept 202221 Sept 2022

Publication series

NameProceedings of the American Society for Composites Technical Conference
ISSN (Print)1084-7243

Conference

Conference37th Technical Conference of the American Society for Composites, ASC 2022
Country/TerritoryUnited States
CityTucson
Period19/09/2221/09/22

Bibliographical note

Funding Information:
This work was funded by Airbus and the EPSRC through the Centre for Doctoral Training in Advanced Composites for Innovation and Science (EP/L016028/1) and the Future Composites Manufacturing Hub (EP/P006701/1) Layer by Layer Curing project.

Publisher Copyright:
© Proceedings of the American Society for Composites - 37th Technical Conference, ASC 2022. All rights reserved.

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