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Finite element analysis of a thermally actuated biocompatible stainless steel 316 microgripper for microassembly and bio-applications

Augustine, Nevin and Santhosh, M and Ramesh, T and Kapil, Sadani (2015) Finite element analysis of a thermally actuated biocompatible stainless steel 316 microgripper for microassembly and bio-applications. In: 2nd international conference on Microelectronics, Circuits and systems, July, 11st -12th, 2015, Hotel Peerless INN, Dharmatala,Kolkata, West Bengal, India..

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Abstract

Abstract—Microgrippers have been widely investigated because of their extensive applications in microrobotics technology, microsurgery, tissue manipulations, microassembly etc. Conventional MEMS devices are made up of polysilicon which requires the use of costlier equipments for its fabrication and further it has to go through dark room micro machining process which is time consuming. This research work gives an insight about the thermally actuated microgripper made on a highly biocompatible stainless steel 316L sheet material which can be widely used for microassembly, biological and biomedical applications. The basic design is based on Guckel thermal actuator model. The proposed gripper can be fabricated using laser machining or micro-wirecut EDM technique which makes fabrication easy and less expensive. The microgripper is designed by iterative simulation process. The simulation results shows that the proposed gripper produces a large displacement for a small applied voltage when compared with existing microgrippers. At an applied voltage of 0.12V, it produces a maximum displacement of around 95μm and a temperature rise of 80C at the gripper arm tip. Various parameters like current density, joule heating, temperature, deformation, thermal strains are also studied

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: MEMS, thermal actuator, EDM component
Subjects: Engineering > MIT Manipal > Instrumentation and Control
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 20 Jan 2016 14:02
Last Modified: 11 Feb 2016 11:50
URI: http://eprints.manipal.edu/id/eprint/145116

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