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Compressive strength assessment of a CFRP aero-engine component – An approach based on measured fibre misalignment angles
GKN Aerospace Sweden AB, Sweden.
GKN Aerospace Sweden AB, Sweden.
RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
Chalmers University of Technology, Sweden.
2019 (English)In: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 233, article id 111632Article in journal (Refereed) Published
Abstract [en]

In this paper we apply a recently developed methodology to assess the compressive strength of an aero-engine component based on measured fibre misalignment angles. The component is a fan outlet guide vane made from a carbon fibre reinforced polymer, which was manufactured and tested by GKN Aerospace in Sweden. The main novelty with this work is that kink-band formation is predicted from measurements of fibre misalignment angles with high spatial resolution in a real component. In addition, we validate the recently published “defect severity model” on unidirectional specimens of the same material system as the aerospace component. We confirm high accuracy of the model for prediction of compressive strength on unidirectional composite laminates. Further work is however needed to extend the methodology for cases where progressive damage leads to final failure. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 233, article id 111632
Keywords [en]
Aerospace, Compression failure, NCF composites, Strength models, Aircraft engines, Alignment, Carbon fiber reinforced plastics, Carbon fibers, Compressive strength, Engines, Laminated composites, Tensile strength, Aero-engine components, Aerospace components, High spatial resolution, Kink band formations, Unidirectional composites, Failure (mechanical)
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40917DOI: 10.1016/j.compstruct.2019.111632Scopus ID: 2-s2.0-85075387212OAI: oai:DiVA.org:ri-40917DiVA, id: diva2:1376778
Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2020-01-10Bibliographically approved

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