Characterization of static failure in laminates containing transverse preform transitions by image processing

Asbjørn Malte Olesen*, Brian Lau Verndal Bak, Jens Jakob Bender, Esben Lindgaard

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Preform laminates are introduced to reduce costs when manufacturing large composite structures such as wind turbine blades. A preform is defined as a stack of unidirectional and biaxial dry non-crimp fabric glass fibre plies weakly bonded using a polymeric binder material. In using preforms, potentially weak interfaces are created between preforms in the cured laminate, called preform transitions. The failure of transverse preform transitions subject to static tension is characterized in terms of crack density by a novel automated image processing method for crack quantification. It is found that for static tension, the transverse preform transition geometry has equal or lower crack density compared to the equivalent continuous laminate.
Original languageEnglish
Title of host publicationProceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability : Vol 2 – Manufacturing
EditorsAnastasios Vassilopoulos, Véronique Michaud
Number of pages8
Volume2
Publisher EPFL Lausanne, Composite Construction Laboratory
Publication date12 Dec 2022
Edition1
Pages547-554
ISBN (Electronic)978-2-9701614-0-0
DOIs
Publication statusPublished - 12 Dec 2022

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