Bio-inspired artificial muscle structure for integrated sensing and actuation

No Thumbnail Available
Authors
Ye, Zhihang
Faisal, Md. Shahnewaz Sabit
Asmatulu, Ramazan
Chen, Zheng
Advisors
Issue Date
2015-04-01
Type
Conference paper
Keywords
Dielectric elastomer , Artificial muscles , Carbon fibers , Artificial tendon
Research Projects
Organizational Units
Journal Issue
Citation
Zhihang Ye ; Md. Shahnewaz Sabit Faisal ; Ramazan Asmatulu ; Zheng Chen; Bio-inspired artificial muscle structure for integrated sensing and actuation . Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 943024 (April 1, 2015)
Abstract

In this paper, a novel artificial muscle/tendon structure is developed for achieving bio-inspired actuation and self-sensing. The hybrid structure consists of a dielectric elastomer (DE) material connected with carbon fibers, which incorporates the built-in sensing and actuation capability of DE and mechanical, electrical interfacing capability of carbon fibers. DEs are light weight artificial muscles that can generate compliant actuation with low power consumption. Carbon fibers act as artificial tendon due to their high electro-conductivity and mechanical strength. PDMS material is used to electrically and mechanically connect the carbon fibers with the DE material. A strip actuator was fabricated to verify the structure design and characterize its actuation and sensing capabilities. A 3M VHB 4905 tape was used as the DE material. To make compliant electrodes on the VHB tape, carbon black was sprayed on the surface of VHB tape. To join the carbon fibers to the VHB tape, PDMS was used as bonding material. Experiments have been conducted to characterize the actuation and sensing capabilities. The actuation tests have shown that the energy efficiency of artificial muscle can reach up to 0.7% and the strain can reach up to 1%. The sensing tests have verified that the structure is capable of self-sensing through the electrical impedance measurement.

Table of Contents
Description
Click on the DOI link to access the article (may not be free).
Publisher
SPIE, American Society of Mechanical Engineers
Journal
Book Title
Series
Electroactive Polymer Actuators and Devices (EAPAD) 2015;v.9430
PubMed ID
DOI
ISSN
0277-786X
EISSN