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Piezoelectric actuators for tactile and elasticity sensing

dc.contributor.authorToledo, Javier
dc.contributor.authorRuiz-Díez, Víctor
dc.contributor.authorHernando-García, Jorge
dc.contributor.authorSánchez-Rojas, José Luis
dc.date.accessioned2024-02-05T11:59:35Z
dc.date.available2024-02-05T11:59:35Z
dc.date.issued2020-03-19
dc.identifier.issn2076-0825
dc.identifier.urihttps://hdl.handle.net/10115/29645
dc.description.abstractPiezoelectric actuators have achieved remarkable progress in many fields, being able to generate forces or displacements to perform scanning, tuning, manipulating, tactile sensing or delivering functions. In this work, two piezoelectric PZT (lead zirconate titanate) bimorph actuators, with different tip contact materials, were applied as tactile sensors to estimate the modulus of elasticity, or Young's modulus, of low-stiffness materials. The actuators were chosen to work in resonance, taking advantage of a relatively low resonant frequency of the out-of-plane vibrational modes, associated with a convenient compliance, proven by optical and electrical characterization. Optical measurements performed with a scanning laser vibrometer confirmed that the displacement per applied voltage was around 437 nm/V for the resonator with the lower mass tip. In order to determine the modulus of elasticity of the sensed materials, the stiffness coefficient of the resonator was first calibrated against a force sensor, obtaining a value of 1565 ± 138 N/m. The actuators were mounted in a positioning stage to allow approximation and contact of the sensor tip with a set of target materials. Electrical measurements were performed using the resonator as part of an oscillator circuit, and the modulus of elasticity of the sample was derived from the contact resonant frequency curve of the cantilever-sample system. The resulting sensor is an effective, low-cost and nondestructive solution compared to atomic force microscopy (AFM) techniques. Materials with different modulus of elasticity were tested and the results compared to values reported in the literature.es
dc.language.isoenges
dc.publisherActuators - Multidisciplinary Digital Publishing Institute (MDPI)es
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectActuatores
dc.subjectLow-costes
dc.subjectModulus of elasticityes
dc.subjectOut-of-planees
dc.subjectPiezoelectrices
dc.subjectPZTes
dc.subjectSensinges
dc.subjectTactilees
dc.titlePiezoelectric actuators for tactile and elasticity sensinges
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.3390/act9010021es
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses


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Attribution 4.0 InternationalExcept where otherwise noted, this item's license is described as Attribution 4.0 International