A bio-Inspired electro-active velcro mechanism using shape memory alloy for wearable and stiffness controllable layers

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Title: A bio-Inspired electro-active velcro mechanism using shape memory alloy for wearable and stiffness controllable layers
Author(s): Afrisal, H
Sadati, SMH
Nanayakkara, T
Item Type: Conference Paper
Abstract: Smart attachment mechanisms are believed to contribute significantly in stiffness control of soft robots. This paper presents a working prototype of an active Velcro based stiffness controllable fastening mechanism inspired from micro active hooks found in some species of plants and animals. In contrast to conventional passive Velcro, this active Velcro mechanism can vary the stiffness level of its hooks to adapt to external forces and to maintain the structure of its supported layer. The active hooks are fabricated using Shape Memory Alloy (SMA) wires which can be actuated using Lenz-Joule heating technique via thermo-electric manipulation. In this paper, we show experimental results for the effects of active SMA Velcro temperature, density and number on the attachment resisting force profile in dynamic displacement. We aim to provide new insights into the novel design approach of using active hook systems to support future implementation of active velcro mechanisms for fabrication of wearable stiffness controllable thin layers.
Publication Date: 15-Jun-2017
Date of Acceptance: 16-Dec-2016
URI: http://hdl.handle.net/10044/1/53517
DOI: https://dx.doi.org/10.1109/ICIAFS.2016.7946574
ISSN: 2151-1802
Publisher: IEEE
Journal / Book Title: Information and Automation for Sustainability (ICIAfS), 2016 IEEE International Conference on
Copyright Statement: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/N03211X/2
Conference Name: 8th IEEE International Conference on Information and Automation for Sustainability (ICIAfS) - Interoperable Sustainable Smart Systems for Next Generation
Keywords: Science & Technology
Technology
Automation & Control Systems
Computer Science, Information Systems
Computer Science
SOFT ROBOTICS
DESIGN
Science & Technology
Technology
Automation & Control Systems
Computer Science, Information Systems
Computer Science
SOFT ROBOTICS
DESIGN
Publication Status: Published
Start Date: 2016-12-16
Finish Date: 2016-12-19
Conference Place: Univ Ruhuna, Fac Engn, Galle, SRI LANKA
Appears in Collections:Faculty of Engineering
Dyson School of Design Engineering



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