Plastic Strain Determination with Nonlinear Ultrasonic Waves using In-situ Integrated Piezoelectric Ultrasonic Transducers

Plastic Strain Determination with Nonlinear Ultrasonic Waves using In-situ Integrated Piezoelectric Ultrasonic Transducers
Title:
Plastic Strain Determination with Nonlinear Ultrasonic Waves using In-situ Integrated Piezoelectric Ultrasonic Transducers
Other Titles:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Publication Date:
30 October 2017
Citation:
Shifeng Guo, Shuting Chen, Lei Zhang, Yi Fan Chen, and Kui Yao, “Plastic Strain Determination with Nonlinear Ultrasonic Waves using In-situ Integrated Piezoelectric Ultrasonic Transducers,” IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 10.1109/TUFFC.2017.2768238, Vol. 65, No. 1, pp. 95-101, 2018.
Abstract:
The detection of plastic deformation of metallic alloy materials with second harmonic Rayleigh ultrasonic wave is firstly investigated using direct-write piezoelectric ultrasonic transducers, in which piezoelectric poly(vinylidenefluoride/trifluoroethylene) (P(VDF/TrFE)) polymer coatings and electrodes are directly deposited, processed and patterned on the alloy to be evaluated. Rayleigh ultrasonic signals, generated by the direct-write transducers on titanium alloy specimens, are characterized by a laser scanning vibrometer. The results show that acoustic nonlinearity increases with plastic strain, and an increase of ~40% in the acoustic nonlinearity corresponding to a plastic strain of 5.1%. The measurement data and technical features with use of the direct-write transducers are compared with the conventional discrete angle beam piezoelectric transducer. The results and analyses show that compared with the conventional discrete angle beam piezoelectric transducers, implementation of the direct-write piezoelectric transducers has significant technical advantages and is promising for applications in determining nonlinear ultrasonic waves and plastic strain of structural materials.
License type:
PublisherCopyrights
Funding Info:
This project is supported by the Aerospace Program of A*STAR, Singapore through the project IMRE/13-2P1107, and SERC Grant Number 1325806124.
Description:
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
ISSN:
0885-3010
1525-8955
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