Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 149, Issue -, Pages 64-74Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2017.06.014
Keywords
Sandwich; Impact behavior; Finite element analysis; Modeling
Categories
Funding
- Universiti Teknologi Malaysia [Q.J130000.2422.03G65]
- Ministry of Higher Education (MOHE)
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A novel woodpecker's head-inspired sandwich beam, comprising carbon fiber laminated skins with rubber and aluminum honeycomb cores, was developed for low-velocity impact behavior improvement. A comparative study against conventional sandwich beam was performed employing three impact energy levels (7.28 J, 9.74 J, 12.63 J) by means of experimental and numerical methods. In all cases, bio-inspired beams were consistently superior to those conventional, with low developed stress, deformation, and damage area while carrying higher maximum impact force. Even with a low added mass, the impact resistance efficiencies of the bio-inspired beams were 2.7-5.7 times greater than those of conventional configuration, thus exhibiting an improved impact performance of the developed bio-inspired beam useful for future protection strategy. (C) 2017 Elsevier Ltd. All rights reserved.
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