Publication detail

Evaluation of a Piezo-Actuated Sensor for Monitoring Elastic Variations of Its Support with Impedance-Based Measurements

Tinoco, HA. Cardona, CI. Pena, FM. Gomez, JP. Roldan-Restrepo, SI. Velasco-Mejia, MA. Barco, DR.

Original Title

Evaluation of a Piezo-Actuated Sensor for Monitoring Elastic Variations of Its Support with Impedance-Based Measurements

Type

journal article in Web of Science

Language

English

Original Abstract

This study exposes the assessment of a piezo-actuated sensor for monitoring elastic variations (change in Young's modulus) of a host structure in which it is attached. The host structure is monitored through a coupling interface connected to the piezo-actuated device. Two coupling interfaces were considered (an aluminum cone and a human tooth) for the experimental tests. Three different materials (aluminum, bronze and steel) were prepared to emulate the elastic changes in the support, keeping the geometry as a fixed parameter. The piezo device was characterized from velocity frequency response functions in pursuance to understand how vibration modes stimulate the electrical resistance through electrical resonance peaks of the sensor. An impedance-based analysis (1-20 kHz) was performed to correlate elastic variations with indexes based on root mean square deviation (RMSD) for two observation windows (9.3 to 9.7 kHz and 11.1 to 11.5 kHz). Results show that imposed elastic variations were detected and quantified with the electrical resistance measurements. Moreover, it was demonstrated that the sensitivity of the device was influenced by the type of coupling interface since the cone was more sensitive than the tooth in both observation windows. As a final consideration, results suggest that bio-structures (fruits and bone, among others) could be studied since these can modify naturally its elastic properties.

Keywords

structural health monitoring; bio-monitoring; piezo-actuated sensor; electromechanical impedance technique; elastic variations; vibration through teeth

Authors

Tinoco, HA.; Cardona, CI.; Pena, FM.; Gomez, JP.; Roldan-Restrepo, SI.; Velasco-Mejia, MA.; Barco, DR.

Released

5. 1. 2019

Publisher

MDPI

Location

BASEL

ISBN

1424-8220

Periodical

SENSORS

Year of study

19

Number

1

State

Swiss Confederation

Pages from

1

Pages to

16

Pages count

16

URL

https://www.mdpi.com/1424-8220/19/1/184/htm

BibTex

@article{BUT162250,
  author="Tinoco, HA. and Cardona, CI. and Pena, FM. and Gomez, JP. and Roldan-Restrepo, SI. and Velasco-Mejia, MA. and Barco, DR.",
  title="Evaluation of a Piezo-Actuated Sensor for Monitoring Elastic Variations of Its Support with Impedance-Based Measurements",
  journal="SENSORS",
  year="2019",
  volume="19",
  number="1",
  pages="1--16",
  doi="10.3390/s19010184",
  issn="1424-8220",
  url="https://www.mdpi.com/1424-8220/19/1/184/htm"
}