Sandwich construction has been extensively used in various fields. However, sandwich panels have not been fully exploited in critical structural applications due to damage tolerance and safety concern. A major problem of sandwich panels is the debonding at or near the core/face sheet interface, especially under impact loading, which can lead to a sudden loss of structural integrity and cause catastrophic consequences. In order to improve the debonding resistance and energy absorption of sandwich panel under impact loadings, a new foam core is proposed which is a hybrid core consisting of grid stiffened hollow metallic millitubes reinforced polymer matrix. The objective of this study was to characterize its dynamic performances. The core consisted of polymer resin reinforced by grid stiffened continuous metallic millitubes. Low velocity impact test demonstrated that new core panel may be considered a promising option for critical structural applications featured by debonding and multiple impact tolerance.
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ASME 2012 Pressure Vessels and Piping Conference
July 15–19, 2012
Toronto, Ontario, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5505-8
PROCEEDINGS PAPER
Novel Impact/Debonding Tolerant Sandwich Panel With Millitubes Grid Stiffened Foam Core
Guoqiang Li,
Guoqiang Li
Louisiana State University, Baton Rouge, LA
Southern University and A&M College, Baton Rouge, LA
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Gefu Ji,
Gefu Ji
Louisiana State University, Baton Rouge, LA
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Su-Seng Pang
Su-Seng Pang
Louisiana State University, Baton Rouge, LA
Search for other works by this author on:
Guoqiang Li
Louisiana State University, Baton Rouge, LA
Southern University and A&M College, Baton Rouge, LA
Gefu Ji
Louisiana State University, Baton Rouge, LA
Su-Seng Pang
Louisiana State University, Baton Rouge, LA
Paper No:
PVP2012-78547, pp. 235-238; 4 pages
Published Online:
August 8, 2013
Citation
Li, G, Ji, G, & Pang, S. "Novel Impact/Debonding Tolerant Sandwich Panel With Millitubes Grid Stiffened Foam Core." Proceedings of the ASME 2012 Pressure Vessels and Piping Conference. Volume 6: Materials and Fabrication, Parts A and B. Toronto, Ontario, Canada. July 15–19, 2012. pp. 235-238. ASME. https://doi.org/10.1115/PVP2012-78547
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