Natural fibers actuators for smart bio-inspired hygromorph biocomposites

A. Le Duigou, J. Beaugrand, F. Scarpa, M. Castro

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

'Top-down biomimetic process” enables to solve engineering concerns thanks to solutions found in Nature. The motivation of the present work is to exploit the observed “natural” weakness of natural fibers i.e. their hygroscopic behaviour, so it can be used as a driving force in autonomously self-shaping smart materials, Hygromorph Biocomposite (HBC). This kind of actuator could be used for example in autonomous climate adaptive building structures with humidity/temperature interactions. In this work we present the “top-down framework” dedicated to the HBC development based on pine cone inspiration (microstructure and actuation). Then, a series of design guidelines for HBCs with improved performance, low environmental footprints in severe environments is discussed. The actuation response is evaluated as a function of material parameters: The actuation performance is directly related to the fibre microstructure and its biochemical composition also as fibre content and Interfacial Shear Strength. We also provide a demonstration on how HBCs can be used to trigger deployment of more complex structures based on Origami designs.

Original languageEnglish
Title of host publicationECCM 2018 - 18th European Conference on Composite Materials
Publisher Applied Mechanics Laboratory
ISBN (Electronic)9781510896932
Publication statusPublished - 1 Jan 2020
Event18th European Conference on Composite Materials, ECCM 2018 - Athens, Greece
Duration: 24 Jun 201828 Jun 2018

Publication series

NameECCM 2018 - 18th European Conference on Composite Materials

Conference

Conference18th European Conference on Composite Materials, ECCM 2018
CountryGreece
CityAthens
Period24/06/1828/06/18

Keywords

  • Actuation 4
  • Biocomposite 2
  • Moisture 3
  • Morphing 5
  • Natural fiber 1

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    Le Duigou, A., Beaugrand, J., Scarpa, F., & Castro, M. (2020). Natural fibers actuators for smart bio-inspired hygromorph biocomposites. In ECCM 2018 - 18th European Conference on Composite Materials (ECCM 2018 - 18th European Conference on Composite Materials). Applied Mechanics Laboratory.