Quantitative evaluation of contactless impact echo for non-destructive assessment of void detection within tendon ducts

Franck Schoefs; Odile Abraham; John S. Popovics

doi:10.1016/j.conbuildmat.2012.02.002

Quantitative evaluation of contactless impact echo for non-destructive assessment of void detection within tendon ducts

Franck Schoefs, Odile Abraham, John S. Popovics

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

Abstract

Owners of pre-stressed concrete structures must realize preventive maintenance in order to maintain structural safety and limit economic losses. Detection voids in tendon ducts, where corrosion could occur, is key in this effort. This paper focuses on the quantification of the performance of the impact echo method (IEM), applied using a new laser interferometer contactless robot, for duct void detection in a reinforced concrete wall. We show first the influence of the wall stiffness on the IEM (resonance) frequency. We use a probabilistic modeling to evaluate the IEM. We illustrate a way for accounting on-site uncertainties of NDT measurements.

Original language	English (US)
Pages (from-to)	885-892
Number of pages	8
Journal	Construction and Building Materials
Volume	37
DOIs	https://doi.org/10.1016/j.conbuildmat.2012.02.002
State	Published - Dec 2012

Keywords

Impact echo
Laser interferometer
POD PFA
ROC curve
Robot
Voids in tendon duct
α-δ Method

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

Online availability

10.1016/j.conbuildmat.2012.02.002

Library availability

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@article{87e9d8846f1c4d21a4eaf02d995d5e6c,

title = "Quantitative evaluation of contactless impact echo for non-destructive assessment of void detection within tendon ducts",

abstract = "Owners of pre-stressed concrete structures must realize preventive maintenance in order to maintain structural safety and limit economic losses. Detection voids in tendon ducts, where corrosion could occur, is key in this effort. This paper focuses on the quantification of the performance of the impact echo method (IEM), applied using a new laser interferometer contactless robot, for duct void detection in a reinforced concrete wall. We show first the influence of the wall stiffness on the IEM (resonance) frequency. We use a probabilistic modeling to evaluate the IEM. We illustrate a way for accounting on-site uncertainties of NDT measurements.",

keywords = "Impact echo, Laser interferometer, POD PFA, ROC curve, Robot, Voids in tendon duct, α-δ Method",

author = "Franck Schoefs and Odile Abraham and Popovics, {John S.}",

note = "Funding Information: We would like to thank the French National Agency for Research (ANR) and Electricit{\'e} De France (EDF) for funding this research within the project ACTENA. We would like to acknowledge the significant help of Louis–Marie Cottineau, Fabrice Blaineau, Alain Grosseau (Ifsttar, MACS) and Michel Valade (LRPC, Lyon) for the design and realization of the robot. The building of the wall was performed under the supervision of Bernard Guieysse (Ifsttar, IM) and the tendon duct preparation was carried out by Jean–Francois David (Ifsttar, SOA). MSc students Thibault Delacourt, Daniel Lerat and Guillaume Levillain are also thanked.",

year = "2012",

month = dec,

doi = "10.1016/j.conbuildmat.2012.02.002",

language = "English (US)",

volume = "37",

pages = "885--892",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Limited",

}

TY - JOUR

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AU - Schoefs, Franck

AU - Abraham, Odile

AU - Popovics, John S.

N1 - Funding Information: We would like to thank the French National Agency for Research (ANR) and Electricité De France (EDF) for funding this research within the project ACTENA. We would like to acknowledge the significant help of Louis–Marie Cottineau, Fabrice Blaineau, Alain Grosseau (Ifsttar, MACS) and Michel Valade (LRPC, Lyon) for the design and realization of the robot. The building of the wall was performed under the supervision of Bernard Guieysse (Ifsttar, IM) and the tendon duct preparation was carried out by Jean–Francois David (Ifsttar, SOA). MSc students Thibault Delacourt, Daniel Lerat and Guillaume Levillain are also thanked.

PY - 2012/12

Y1 - 2012/12

N2 - Owners of pre-stressed concrete structures must realize preventive maintenance in order to maintain structural safety and limit economic losses. Detection voids in tendon ducts, where corrosion could occur, is key in this effort. This paper focuses on the quantification of the performance of the impact echo method (IEM), applied using a new laser interferometer contactless robot, for duct void detection in a reinforced concrete wall. We show first the influence of the wall stiffness on the IEM (resonance) frequency. We use a probabilistic modeling to evaluate the IEM. We illustrate a way for accounting on-site uncertainties of NDT measurements.

AB - Owners of pre-stressed concrete structures must realize preventive maintenance in order to maintain structural safety and limit economic losses. Detection voids in tendon ducts, where corrosion could occur, is key in this effort. This paper focuses on the quantification of the performance of the impact echo method (IEM), applied using a new laser interferometer contactless robot, for duct void detection in a reinforced concrete wall. We show first the influence of the wall stiffness on the IEM (resonance) frequency. We use a probabilistic modeling to evaluate the IEM. We illustrate a way for accounting on-site uncertainties of NDT measurements.

KW - Impact echo

KW - Laser interferometer

KW - POD PFA

KW - ROC curve

KW - Robot

KW - Voids in tendon duct

KW - α-δ Method

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VL - 37

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EP - 892

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Quantitative evaluation of contactless impact echo for non-destructive assessment of void detection within tendon ducts

Abstract

Keywords

ASJC Scopus subject areas

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