Next Article in Journal
Prediction of Body Weight of a Person Lying on a Smart Mat in Nonrestraint and Unconsciousness Conditions
Next Article in Special Issue
A Comparative and Review Study on Shape and Stress Sensing of Flat/Curved Shell Geometries Using C0-Continuous Family of iFEM Elements
Previous Article in Journal
Technique and Circuit for Contactless Readout of Piezoelectric MEMS Resonator Sensors
Previous Article in Special Issue
Isogeometric iFEM Analysis of Thin Shell Structures
Article

Measurement of Shear Strain Field in a Soft Material Using a Sensor System Consisting of Distributed Piezoelectric Polymer Film

Department of Mechanical Systems Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(12), 3484; https://doi.org/10.3390/s20123484
Received: 15 May 2020 / Revised: 17 June 2020 / Accepted: 18 June 2020 / Published: 19 June 2020
(This article belongs to the Special Issue Shape Sensing)
Measurement of the internal stress and strain distributions within soft materials is necessary in the field of skin contact safety. However, conventional interactive force sensors cannot efficiently obtain or estimate these distributions. Herein, a shear strain sensor system consisting of distributed built-in piezoelectric polyvinylidene fluoride (PVDF) polymer films was developed to measure the internal shear strain field of a soft material. A shear strain sensing model was mathematically established, based on the piezoelectricity and mechanical behavior of a bending cantilever beam, to explain the sensing principle. An experiment in three-dimensional measurement of the shear strain distribution within an artificial skin was designed and conducted to assess the sensitivity of the sensing model. This sensor system could visualize the shear strain field and was sensitive to different contact conditions. The measurement results agreed well with the results of numerical simulation of the substrate, based on contact mechanics. The proposed sensor system was confirmed to provide a new sensing method for the field of shape analysis. The sensor system can be applied to develop sufficiently sensitive electronic skin and can significantly contribute to skin damage analysis and skin contact safety assessment. View Full-Text
Keywords: shear strain; soft material; embedded sensor; piezoelectric sensor shear strain; soft material; embedded sensor; piezoelectric sensor
Show Figures

Figure 1

MDPI and ACS Style

Li, F.; Akiyama, Y.; Wan, X.; Okamoto, S.; Yamada, Y. Measurement of Shear Strain Field in a Soft Material Using a Sensor System Consisting of Distributed Piezoelectric Polymer Film. Sensors 2020, 20, 3484. https://doi.org/10.3390/s20123484

AMA Style

Li F, Akiyama Y, Wan X, Okamoto S, Yamada Y. Measurement of Shear Strain Field in a Soft Material Using a Sensor System Consisting of Distributed Piezoelectric Polymer Film. Sensors. 2020; 20(12):3484. https://doi.org/10.3390/s20123484

Chicago/Turabian Style

Li, Fengyu, Yasuhiro Akiyama, Xianglong Wan, Shogo Okamoto, and Yoji Yamada. 2020. "Measurement of Shear Strain Field in a Soft Material Using a Sensor System Consisting of Distributed Piezoelectric Polymer Film" Sensors 20, no. 12: 3484. https://doi.org/10.3390/s20123484

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop