A Debonded Sandwich Specimen Under Mixed Mode Bending (MMB)

Amilcar Quispitupa, Christian Berggreen, Leif A. Carlsson

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Abstract

Face/core interface crack propagation in sandwich specimens is analyzed. A thorough analysis of the typical failure modes in sandwich composites was performed in order to design the MMB specimen to promote face/core debond fracture. Displacement, compliance and energy release rate expressions for the MMB specimen were derived from a superposition analysis. An experimental verification of the methodology proposed was performed using MMB sandwich specimens with H100 PVC foam core and E-glass/polyester non-crimp quadro-axial [0/45/90/-45]s DBLT-850 faces. Different mixed mode loadings were applied using the MMB test rig and debond propagation as failure mode was successfully achieved.
Original languageEnglish
Title of host publicationProceedings of the 8th INTERNATIONAL CONFERENCE ON SANDWICH STRUCTURES
Place of PublicationPorto, Portugal
PublisherPublindústria, Produção de Comunicação, Lda.
Publication date2008
Pages186-198
Publication statusPublished - 2008
Event8th International Conference on Sandwich Structures - Porto, Portugal
Duration: 6 May 20088 May 2008
Conference number: 8
http://paginas.fe.up.pt/~icss8/welcome.html

Conference

Conference8th International Conference on Sandwich Structures
Number8
CountryPortugal
CityPorto
Period06/05/200808/05/2008
Internet address

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