Time reverse modeling of acoustic emissions in a reinforced concrete beam

Georg Karl Kocur; Erik H. Saenger; Christian U. Grosse; Thomas Vogel

doi:10.1016/j.ultras.2015.10.014

Time reverse modeling of acoustic emissions in a reinforced concrete beam

Georg Karl Kocur, Erik H. Saenger, Christian U. Grosse, Thomas Vogel

Chair of Non-destructive Testing

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

51 Scopus citations

Abstract

The time reverse modeling (TRM) is applied for signal-based acoustic emission (AE) analysis of reinforced concrete (RC) specimens. TRM uses signals obtained from physical experiments as input. The signals are re-emitted numerically into a structure in a time-reversed manner, where the wavefronts interfere and appear as dominant concentrations of energy at the origin of the AE. The experimental and numerical results presented for selected AE signals confirm that TRM is capable of localizing AE activity in RC caused by concrete cracking. The accuracy of the TRM results is corroborated by three-dimensional crack distributions obtained from X-ray computed tomography images.

Original language	English
Pages (from-to)	96-104
Number of pages	9
Journal	Ultrasonics
Volume	65
DOIs	https://doi.org/10.1016/j.ultras.2015.10.014
State	Published - Feb 2016

Keywords

Acoustic emission
Concrete
Elastic waves
Time reversal
Wave propagation

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10.1016/j.ultras.2015.10.014

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title = "Time reverse modeling of acoustic emissions in a reinforced concrete beam",

abstract = "The time reverse modeling (TRM) is applied for signal-based acoustic emission (AE) analysis of reinforced concrete (RC) specimens. TRM uses signals obtained from physical experiments as input. The signals are re-emitted numerically into a structure in a time-reversed manner, where the wavefronts interfere and appear as dominant concentrations of energy at the origin of the AE. The experimental and numerical results presented for selected AE signals confirm that TRM is capable of localizing AE activity in RC caused by concrete cracking. The accuracy of the TRM results is corroborated by three-dimensional crack distributions obtained from X-ray computed tomography images.",

keywords = "Acoustic emission, Concrete, Elastic waves, Time reversal, Wave propagation",

author = "Kocur, {Georg Karl} and Saenger, {Erik H.} and Grosse, {Christian U.} and Thomas Vogel",

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doi = "10.1016/j.ultras.2015.10.014",

language = "English",

volume = "65",

pages = "96--104",

journal = "Ultrasonics",

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T1 - Time reverse modeling of acoustic emissions in a reinforced concrete beam

AU - Kocur, Georg Karl

AU - Saenger, Erik H.

AU - Grosse, Christian U.

AU - Vogel, Thomas

PY - 2016/2

Y1 - 2016/2

N2 - The time reverse modeling (TRM) is applied for signal-based acoustic emission (AE) analysis of reinforced concrete (RC) specimens. TRM uses signals obtained from physical experiments as input. The signals are re-emitted numerically into a structure in a time-reversed manner, where the wavefronts interfere and appear as dominant concentrations of energy at the origin of the AE. The experimental and numerical results presented for selected AE signals confirm that TRM is capable of localizing AE activity in RC caused by concrete cracking. The accuracy of the TRM results is corroborated by three-dimensional crack distributions obtained from X-ray computed tomography images.

AB - The time reverse modeling (TRM) is applied for signal-based acoustic emission (AE) analysis of reinforced concrete (RC) specimens. TRM uses signals obtained from physical experiments as input. The signals are re-emitted numerically into a structure in a time-reversed manner, where the wavefronts interfere and appear as dominant concentrations of energy at the origin of the AE. The experimental and numerical results presented for selected AE signals confirm that TRM is capable of localizing AE activity in RC caused by concrete cracking. The accuracy of the TRM results is corroborated by three-dimensional crack distributions obtained from X-ray computed tomography images.

KW - Acoustic emission

KW - Concrete

KW - Elastic waves

KW - Time reversal

KW - Wave propagation

UR - http://www.scopus.com/inward/record.url?scp=84948390619&partnerID=8YFLogxK

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DO - 10.1016/j.ultras.2015.10.014

M3 - Article

AN - SCOPUS:84948390619

SN - 0041-624X

VL - 65

SP - 96

EP - 104

JO - Ultrasonics

JF - Ultrasonics

ER -

Time reverse modeling of acoustic emissions in a reinforced concrete beam

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Keywords

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