期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 68, 期 15-16, 页码 3171-3177出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2008.07.016
关键词
Sandwich; Smart materials; Impact behaviour; Strength; Vascular self-repair
资金
- UK Ministry of Defence [FATS/PAOWPE/02]
- University of Bristol
- Engineering and Physical Sciences Research Council [GR/T03383/01] Funding Source: researchfish
Impact damage can significantly reduce the strength of composite sandwich panels, giving rise to large factors of safety in design. A self-healing sandwich panel was designed and manufactured. Specimens were tested in edgewise compression-after-impact to prove the concept. The self-healing system consists of vascular networks carrying the two liquid components of an epoxy resin system. After damage and autonomous self-healing, the specimens could be restored to their undamaged strength. Key influences on healing efficiency, and the need for further improvements in reliability were identified. A simple specific strength analysis suggested that the mass penalty of self-healing could, in some cases, be offset by the improved design allowables permitted. Published by Elsevier Ltd.
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