2019
DOI: 10.1088/1757-899x/657/1/012031
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Piezo-actuated device for a bio-structural monitoring application through vibration-based condition and electromechanical impedance measurements

Abstract: This study presents a numerical and experimental development of a piezo-actuated device used for monitoring the stiffness variations of its support through electromechanical impedance measurements. The piezo-device and its components define a clamped beam system activated dynamically by two piezo-transducers that transmit vibrations to the support (monitoring substrate). An harmonic finite element analysis was carried out to understand the effects of the substrate properties on the dynamics of the piezo-device… Show more

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Cited by 3 publications
(3 citation statements)
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“…The proposed main idea in Fig. 2, subsequently will help to demonstrate that the bone alterations can be monitored using the teeth as probes, since if the bone structure changes ( Z M s ( ) ), the new vibratory conditions (changes in Z M Pa ( ) ) will modify the electrical impedance Z E P ( ) of the piezoelectric patch, as evidenced by Tinoco et al [31] and Barco et al [44]. Bone alterations are assumed as the changes in BMD, which affect its structural condition and the natural quality.…”
Section: Monitoring Of Bone Mineral Alterations Through Emi Techniquementioning
confidence: 99%
“…The proposed main idea in Fig. 2, subsequently will help to demonstrate that the bone alterations can be monitored using the teeth as probes, since if the bone structure changes ( Z M s ( ) ), the new vibratory conditions (changes in Z M Pa ( ) ) will modify the electrical impedance Z E P ( ) of the piezoelectric patch, as evidenced by Tinoco et al [31] and Barco et al [44]. Bone alterations are assumed as the changes in BMD, which affect its structural condition and the natural quality.…”
Section: Monitoring Of Bone Mineral Alterations Through Emi Techniquementioning
confidence: 99%
“…In this study, the electrical resistance is taken as an analysis parameter since it has shown to be more sensitive than reactance measurements. [30,31] demonstrated the effectivity of the electrical resistance to detect structural variations in substrates. The variations of the pattern signal w R s E ( ) can be estimated with the j index (see equation (2)), by comparing two electrical resistance signals; the reference (pattern signal), and the monitoring signal.…”
Section: Decoupling Electromechanical Impedance Signalsmentioning
confidence: 99%
“…Other authors have developed methods for monitoring structural variations through teeth used as biological probes coupled to different substrates [28][29][30]. In this application, a bracket-beam piezoelectric sensor is mounted to the tooth's crown to measure the mechanical response of the substrate between 5-10 kHz.…”
Section: Introductionmentioning
confidence: 99%