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Author: Nicola Lamberti

Affiliation: Università di Salerno, Italy

ISBN: 978-989-8425-37-9

Keyword(s): Piezoelectric Actuators, Langevin Transducers, Dermatological Aesthetic, Vibrating Foils, FEM.

Related Ontology Subjects/Areas/Topics: Biomechanical Devices ; Biomedical Engineering ; Biomedical Instruments and Devices

Abstract: In dermatological aesthetic piezoelectric actuators are widely used: the skin treatment is obtained by the bending vibration, along the length, of a steel foil with a thickness of about 0.5 mm; the vibration frequency is in the ultrasonic range, to avoid annoying noise. In this paper a piezoelectric actuator able to excite a bending motion in the steel foil is described; the active part of the actuator is a piezoelectric Langevin–type transducer soliciting the foil at one edge. The actuator was designed by using ANSYS with the objective to obtain a system with high efficiency, low losses, high mechanical stiffness and low encumbrance. Best results were obtained by means of a Langevin actuator with a stepped horn displacement amplifier, whose total length is λ/2 at the resonance frequency; the Langevin is connected to the foil by an ad hoc support. The ANSYS results computed in operating conditions show a well sustained bending vibration of the foil with stress values, in all the actua tor components, far from the limit value in the material. (More)

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Paper citation in several formats:
Lamberti, N. (2011). A PIEZOELECTRIC ACTUATOR, BASED ON A LANGEVIN-TYPE TRANSDUCER, FOR DERMATOLOGICAL AESTHETIC APPLICATIONS.In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011) ISBN 978-989-8425-37-9, pages 163-167. DOI: 10.5220/0003136701630167

@conference{biodevices11,
author={Nicola Lamberti.},
title={A PIEZOELECTRIC ACTUATOR, BASED ON A LANGEVIN-TYPE TRANSDUCER, FOR DERMATOLOGICAL AESTHETIC APPLICATIONS},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011)},
year={2011},
pages={163-167},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003136701630167},
isbn={978-989-8425-37-9},
}

TY - CONF

JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011)
TI - A PIEZOELECTRIC ACTUATOR, BASED ON A LANGEVIN-TYPE TRANSDUCER, FOR DERMATOLOGICAL AESTHETIC APPLICATIONS
SN - 978-989-8425-37-9
AU - Lamberti, N.
PY - 2011
SP - 163
EP - 167
DO - 10.5220/0003136701630167

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