Ultrasonic evaluation of a steel-concrete structure using embedded Bragg gratings and piezoelectric sensors

被引：0

作者：

Lehujeur, M. ^{[1
]}

Druet, T. ^{[2
]}

Lefeuve, C. ^{[2
]}

Quelene, J. ^{[2
]}

Abraham, O. ^{[1
]}

Laffont, G. ^{[2
]}

Durand, O. ^{[1
]}

Devie, T. ^{[1
]}

Gugole, G. ^{[1
]}

Chapuis, B. ^{[2
]}

Roussel, N. ^{[2
]}

机构：

[1] Gustave Eiffel University, France

[2] CEA, France

来源：

e-Journal of Nondestructive Testing | 2022年 / 27卷 / 09期

关键词：

Bragg grating sensors - Braggs grating - Concrete wall - Embedded ultrasonic sensor - Non destructive evaluation - Piezoelectric sensors - Steel concrete - Steel concrete structure - Ultrasonic evaluation - Wall model;

D O I：

10.58286/27218

中图分类号：

学科分类号：

摘要：

We present a Steel-Concrete wall model equipped with several embedded fiber Bragg Gratings (FBG) as well as several embedded and surface piezoelectric (PZT) sensors. We compare the performances of these embedded sensors for several sources of ultrasonic waves applied on the surface of the wall for frequencies ranging from a few tens to a few hundreds of kHz. The signals obtained reveal that a significant part of the wave energy can be transmitted to the concrete through the surface liner, despite the high mechanical contrasts between steel and concrete. Using a collection of random hammer impacts applied on the steel surface, we further investigate the feasibilty of reconstructing empirical Green’s functions between pairs of sensors buried into the structure using passive seismic methods. © 2022, NDT. net GmbH and Co. KG. All rights reserved.

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