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Operational and defect parameters concerning the acoustic-laser vibrometry method for FRP-reinforced concrete

Chen, Justin G. / Haupt, Robert W. / Buyukozturk, Oral

Acoustic-laser vibrometry, a non-contact method for nondestructive testing, was studied by altering operational and defect parameters to determine their effects on measured signatures and system performance. The method detects delamination and voids in fiber-reinforced polymer reinforced concrete by vibrating the material with an acoustic excitation and measuring the vibration signature with a laser vibrometer. The operational parameters studied were excitation sound pressure level, laser signal, angle of incidence, and dwell time. The defect parameters studied were aspect ratio, size, and curvature. This study was undertaken to understand the method's phenomenology and to provide fundamental knowledge for an operational field system.

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Operational and defect parameters concerning the acoustic-laser vibrometry method for FRP-reinforced concrete

Chen, Justin G. / Haupt, Robert W. / Buyukozturk, Oral

Acoustic-laser vibrometry, a non-contact method for nondestructive testing, was studied by altering operational and defect parameters to determine their effects on measured signatures and system performance. The method detects delamination and voids in fiber-reinforced polymer reinforced concrete by vibrating the material with an acoustic excitation and measuring the vibration signature with a laser vibrometer. The operational parameters studied were excitation sound pressure level, laser signal, angle of incidence, and dwell time. The defect parameters studied were aspect ratio, size, and curvature. This study was undertaken to understand the method's phenomenology and to provide fundamental knowledge for an operational field system.

Operational and defect parameters concerning the acoustic-laser vibrometry method for FRP-reinforced concrete

Chen, Justin G. / Haupt, Robert W. / Buyukozturk, Oral

Acoustic-laser vibrometry, a non-contact method for nondestructive testing, was studied by altering operational and defect parameters to determine their effects on measured signatures and system performance. The method detects delamination and voids in fiber-reinforced polymer reinforced concrete by vibrating the material with an acoustic excitation and measuring the vibration signature with a laser vibrometer. The operational parameters studied were excitation sound pressure level, laser signal, angle of incidence, and dwell time. The defect parameters studied were aspect ratio, size, and curvature. This study was undertaken to understand the method's phenomenology and to provide fundamental knowledge for an operational field system.

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Title:

Operational and defect parameters concerning the acoustic-laser vibrometry method for FRP-reinforced concrete

Contributors:

Chen, Justin G. (author) / Haupt, Robert W. (author) / Buyukozturk, Oral (author)

Published in:

NDT&E International ; 71 ; 43-53

Publication date:

2015

Size:

11 Seiten, 27 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.ndteint.2014.12.006

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Beton , Akustik , Laser , Betriebsparameter , bewehrter Beton , Laserverfahren , nichtzerstörende Prüfung , Schichtablösung , Polymer , Schalldruck , Krümmung , Signatur , Betriebssystem

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