NDLI: Identification of the mechanical properties of the skin by electromechanical impedance analysis of resonant piezoelectric actuator

Content Provider	IEEE Xplore Digital Library
Author	Sienkiewicz, L. Ronkowski, M. Kostro, G. Ryndzionek, R. Rouchon, J.-F.
Copyright Year	2013
Description	Author affiliation: Lab. Plasma et Conversion d'Energie (LAPLACE), INPT, Toulouse, France (Rouchon, J.-F.) \|\| Fac. of Electr. & Control Eng., Gdansk Univ. of Technol., Gdansk, Poland (Sienkiewicz, L.; Ronkowski, M.; Kostro, G.; Ryndzionek, R.)
Abstract	This paper is devoted to the analysis and verification of developed piezoelectric sensor/actuator for measuring the mechanical properties of soft tissues, especially human skin. The key element of the measurement structure is an electromechanical system that uses both the reverse piezoelectric effect (vibration generation - stimulation of the tissues in the appropriate frequency range) and direct piezoelectric effect (system response registration). By analyzing the response of the piezoelectric sensor/actuator - an electromechanical signature of the tested tissue, it is possible to identify a series of mechanical quantities describing the tested object, such as stiffness, viscosity, Young's modulus. An analytical approach is shown in order to establish a link between the electromechanical equivalent circuit obtained for a resonance frequency of the actuator and the calculations based on the Hertz's contact mechanics theory. A finite element method analysis is then presented in order to assess the performance of the chosen topology of piezoelectric sensor/actuator. Finally, the proposed method of impedance characterization is verified experimentally by a prototype of piezoelectric bimorph sensor/actuator.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	3940
Ending Page	3945
File Size	1276119
Page Count	6
File Format	PDF
ISBN	9781479902248
ISSN	1553572X
DOI	10.1109/IECON.2013.6699765
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Actuators Skin Force Polymers Impedance mechanical properties electromechanical impedance piezoelectricity sensor/actuator Mason equivalent circuit
Content Type	Text
Resource Type	Article

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