The effect of free edges on inter-laminar performance of curved laminates

Tatiana Kim, Timothy Fletcher, Timothy Dodwell, Richard Butler, Robert Scheichl, Jesper Ankersen, Richard Newley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A method for an assessment of the edge effect in curved laminates under four-point bend test is presented. The methodology uses ABAQUS FE analysis and the results are compared to the test results. FE analysis suggests that increase in strength from curved laminated with free edges to equivalent infinitely wide laminates can be as significant as 60%-120%. A way of reducing the edge effect by applying a thick layer of resin to the free edges is investigated using the developed methodology and compared against test results. Up to 19% increase in strength of curved elements with edge treatment has been confirmed in tests. Detailed FE analysis suggests that even greater edge effect mitigation, and therefore further increase in element strength, can be achieved if the contrast between the properties of the inter-laminar material and the resin used in edge treatment becomes smaller.

Original languageEnglish
Title of host publicationProceedings of the 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624103421
DOIs
Publication statusPublished - 2015
Event56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 - Kissimmee, USA United States
Duration: 5 Jan 20159 Jan 2015

Conference

Conference56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
CountryUSA United States
CityKissimmee
Period5/01/159/01/15

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Kim, T., Fletcher, T., Dodwell, T., Butler, R., Scheichl, R., Ankersen, J., & Newley, R. (2015). The effect of free edges on inter-laminar performance of curved laminates. In Proceedings of the 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference [AIAA 2015-0968] American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/MSDM15