Impact Damage

Chen, Fujia; Hodgkinson, J.

doi:10.1002/9781118097298.weoc111

Cited by 2 publications

(1 citation statement)

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“…The impact behaviour of cocoon composites is very similar to that of conventional composite laminates, where layers of aligned unidirectional carbon fibres stack with epoxy matrix bonding between the fibres (Chen and Hodgkinson, 2011). Materials and structural design are the key tools for controlling energy absorption and toughness of composites.…”

Section: Discussionmentioning

confidence: 78%

The impact behaviour of silk cocoons

Chen

Hesselberg

Porter

et al. 2013

Journal of Experimental Biology

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SUMMARYSilk cocoons, constructed by silkmoths (Lepidoptera), are protective structural composites. Some cocoons appear to have evolved towards structural and material optimisation in order to sustain impact strikes from predators and hinder parasite ingress. This study investigates the protective properties of silk cocoons with different morphologies by evaluating their impact resistance and damage tolerance. Finite element analysis was used to analyse empirical observations of the quasi-static impact response of the silk cocoons, and to evaluate the separate benefits of the structures and materials through the deformation and damage mechanism. We use design principles from composite engineering in order to understand the structure-propertyfunction relationship of silkworm cocoons. Understanding the highly evolved survival strategies of the organisms building natural cocoons will hopefully lead to inspiration that in turn could lead to improved composite design.

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Section: Discussionmentioning

confidence: 78%