Affiliation:
1. Department of Mechanical Engineering, Dongguk University, 30 Pildong-ro 1 gil, Jung-gu, Seoul 04620, Republic of Korea
2. Department of Mechanical, Robotics and Energy Engineering, Dongguk University, 30 Pildong-ro 1 gil, Jung-gu, Seoul 04620, Republic of Korea
Abstract
Textiles composed of fibers can have their mechanical properties adjusted by changing the arrangement of the fibers, such as strength and flexibility. Particularly, in the case of smart textiles incorporating active materials, various deformations could be created based on fiber patterns that determine the directivity of active materials. In this study, we design a smart fiber-based textile actuator with a chain structure and evaluate its actuation characteristics. Smart fiber composed of shape memory alloy (SMA) generates deformation when the electric current is applied, causing the phase transformation of SMA. We fabricated the smart chain column and evaluated its actuating mechanism based on the size of the chain and the number of rows. In addition, a crochet textile actuator was designed using interlooping smart chains and developed into a soft gripper that can grab objects. With experimental verifications, this study provides an investigation of the relationship between the chain actuator’s deformation, actuating force, actuator temperature, and strain. The results of this study are expected to be relevant to textile applications, wearable devices, and other technical fields that require coordination with the human body. Additionally, it is expected that it can be utilized to configure a system capable of flexible operation by combining rigid elements such as batteries and sensors with textiles.
Funder
National Research Foundation of Korea
Korea Institute of Machinery and Materials
Ministry of Trade, Industry, and Energy
Subject
General Materials Science
Reference34 articles.
1. Soft Robot Review;Lee;Int. J. Control Autom. Syst.,2017
2. Exploiting Textile Mechanical Anisotropy for Fabric-Based Pneumatic Actuators;Cappello;Soft Robot.,2018
3. Soft Robotics;Whitesides;Angew. Chem.,2018
4. Wire-based directed energy deposition of NiTiTa shape memory alloys: Microstructure, phase transformation, electrochemistry, X-ray visibility and mechanical properties;Zuo;Addit. Manuf.,2022
5. Electron beam freeform fabrication of NiTi shape memory alloys: Crystallography, martensitic transformation, and functional response;Li;Mater. Sci. Eng. A,2022