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Compressive strength after impact of CFRP-foam core sandwich panels in marine applications
KTH, Superseded Departments, Aeronautical and Vehicle Engineering.
2004 (English)In: Composites Part B: Engineering, ISSN 1359-8368, Vol. 35, no 6-8, 535-541 p.Article in journal (Refereed) Published
Abstract [en]

A plastic micro buckling approach is investigated in order to see whether it can be used to analytically predict the residual strength of carbon fiber sandwich structures. A parametric study on impact damage resistance and residual strength of sandwich panels with carbon fiber-vinylester faces and PVC foam core is conducted. Two sandwich configurations are studied. The first configuration consists of thin faces and an intermediate density core, representative of a panel from a superstructure. The second configuration consists of thick faces and a high density core, representative of a panel from a hull. Two different impactor geometries are used. One spherical impactor and one pyramid shaped impactor are used in a drop weight rig to inflict low velocity impact damage of different energy levels in the face of the sandwich. The damages achieved ranges from barely visible damages to penetration of one face. Residual strength is tested using in-plane compression of the sandwich plates either instrumented with strain gauges or monitored with digital speckle photography.

Place, publisher, year, edition, pages
2004. Vol. 35, no 6-8, 535-541 p.
Keyword [en]
carbon fibre, polymer matrix composites, damage tolerance
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-45741DOI: 10.1016/j.compositesb.2003.11.007ISI: 000224020700011OAI: diva2:453115
QC 20111101Available from: 2011-11-01 Created: 2011-10-31 Last updated: 2011-11-01Bibliographically approved

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Bull, Peter Hoaas
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