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 sandwich core is proposed which is a hybrid core consisting of hollow metallic millitubes reinforced Shape Memory Polymer matrix. The objective of this study was to characterize its dynamic performances. The core consisted of programmed shape memory polymer resin. Low velocity (4m/s) impact tests demonstrated that new core panel may be considered a promising option for critical structural applications featured by debonding and multiple impact tolerance.
Shape Memory Polymer With Aluminum Tube Reinforced Impact Resistant Sandwich Core
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Ji, G, Li, G, & Pang, S. "Shape Memory Polymer With Aluminum Tube Reinforced Impact Resistant Sandwich Core." Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition. Volume 1: Advances in Aerospace Technology. Houston, Texas, USA. November 9–15, 2012. pp. 97-101. ASME. https://doi.org/10.1115/IMECE2012-86141
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