AlN ultrasound sensor for photoacoustic lamb wave detection in a higherature environment

Taeyang Kim; Jinwook Kim; Xiaoning Jiang

doi:10.1109/TUFFC.2018.2839034

AlN ultrasound sensor for photoacoustic lamb wave detection in a higherature environment

Taeyang Kim, Jinwook Kim, Xiaoning Jiang

School of Mechanical Engineering

North Carolina State University

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

In this paper, we present an ultrasound nondestructive testing (NDT) method for higherature (HT) applications using laser-generated Lamb waves and aluminum nitride (AlN) sensors. Lamb waves were introduced to a stainless steel plate by the Nd:YAG pulsed laser at one point and detected by an AlN receiver at a distant position. The fundamental symmetric (S₀) and antisymmetric (A₀) Lamb waves generated by the pulsed laser were successfully detected by the AlN sensor. This detection was done on a stainless steel plate at temperatures ranging from room temperature to about 800 °C, with a signal-to-noise ratio of higher than 20 dB. Based on the time-of-flights analysis, the ability of this NDT method to localize the defect at an HT (800 °C) has been demonstrated.

Original language	English
Pages (from-to)	1444-1451
Number of pages	8
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	65
Issue number	8
DOIs	https://doi.org/10.1109/TUFFC.2018.2839034
State	Published - Aug 2018

Keywords

Aluminum nitride(AlN)
higherature (HT) nondestructive testing (NDT)
Lamb wave
pulsed Nd:YAG laser

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10.1109/TUFFC.2018.2839034

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title = "AlN ultrasound sensor for photoacoustic lamb wave detection in a higherature environment",

abstract = "In this paper, we present an ultrasound nondestructive testing (NDT) method for higherature (HT) applications using laser-generated Lamb waves and aluminum nitride (AlN) sensors. Lamb waves were introduced to a stainless steel plate by the Nd:YAG pulsed laser at one point and detected by an AlN receiver at a distant position. The fundamental symmetric (S0) and antisymmetric (A0) Lamb waves generated by the pulsed laser were successfully detected by the AlN sensor. This detection was done on a stainless steel plate at temperatures ranging from room temperature to about 800 °C, with a signal-to-noise ratio of higher than 20 dB. Based on the time-of-flights analysis, the ability of this NDT method to localize the defect at an HT (800 °C) has been demonstrated.",

keywords = "Aluminum nitride(AlN), higherature (HT) nondestructive testing (NDT), Lamb wave, pulsed Nd:YAG laser",

author = "Taeyang Kim and Jinwook Kim and Xiaoning Jiang",

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AlN ultrasound sensor for photoacoustic lamb wave detection in a higherature environment

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