Humidity responsive actuation of bioinspired hygromorph biocomposites (HBC) for adaptive structures - IRDL_UBS
Article Dans Une Revue Composites Part A: Applied Science and Manufacturing Année : 2019

Humidity responsive actuation of bioinspired hygromorph biocomposites (HBC) for adaptive structures

Résumé

Hygromorph biocomposites (HBC) possess moisture-induced actuation from bioinspired designs. The present work describes a large experimental and comprehensive database of the hygro-mechanical and bending actuation properties of flax/maleic anhydride grafted polypropylene (MAPP) HBC composites over a large range of moisture variation (10-90% RH) and water immersion. HBCs exhibit a promising responsiveness and reactivity over the whole relative humidity range (10-90% RH), with acceleration and increase of the actuation observed as soon as a 30% RH value is reached. The experimental data are compared to analogous results from an analytical model based on a modified Timoshenko theory, and a finite element model based on the use of classical laminate theory (CLT). We discuss the effects of the hygroscopic properties (beta coefficient) and the design parameters (length/width and thickness ratios) of the composites on the actuation performance.
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Dates et versions

hal-02154451 , version 1 (30-07-2024)

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Antoine Le Duigou, Vincent Keryvin, Johnny Beaugrand, Miguel Pernes, Fabrizio Scarpa, et al.. Humidity responsive actuation of bioinspired hygromorph biocomposites (HBC) for adaptive structures. Composites Part A: Applied Science and Manufacturing, 2019, 116, pp.36-45. ⟨10.1016/j.compositesa.2018.10.018⟩. ⟨hal-02154451⟩
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