NDLI: A novel SMA-based micro tactile display device for elasticity range of human soft tissues: Design and simulation

Content Provider	IEEE Xplore Digital Library
Author	Mansour, N.A. Fath El-Bab, A.M.R. Assal, S.F.M.
Copyright Year	2015
Description	Author affiliation: Mechatron. & Robot. Dept., Egypt-Japan Univ. of Sci. & Technol., Alexandria, Egypt (Mansour, N.A.; Assal, S.F.M.) \|\| Mech. Eng. Dept., Assiut Univ., New Valley, Egypt (Fath El-Bab, A.M.R.)
Abstract	A novel micro tactile display device to display the elasticity of human soft tissues is presented in this paper. The device consists of 16 units in the form of a 4 × 4 units array. Each unit consists of two substrates separated by a 1.75 mm spacer. The first substrate holds a stiffness display pin (1 mm × 1 mm) which is supported by two Shape Memory Alloy (SMA) springs in parallel to provide tunable stiffness. A strain gauge on top of this substrate is used to measure the force applied on that pin. The other substrate includes a planar coil forming a non-contact eddy current sensor that is used to measure the deflection of the pin when subjected to an external force. Both the strain gauge and the eddy current sensors provide feedback signals that are used for characterization and control of the stiffness. Finite element simulation shows that the stiffness range of the designed device matches the range of elasticity of human soft tissues and the eddy current sensor detects up to 1.75 mm deflection which is suitable for characterization purposes. The simulation also studies the cross talk that possibly happen among the eddy current sensors due to the magnetic field.
Sponsorship	IEEE Ind. Electron. Soc. (IES)
Starting Page	447
Ending Page	452
File Size	1028406
Page Count	6
File Format	PDF
e-ISBN	9781467391078
DOI	10.1109/AIM.2015.7222574
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-07
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Eddy currents Aluminum Biological tissues Springs Finite element analysis Elasticity Substrates
Content Type	Text
Resource Type	Article

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