2D finite element simulation of air-coupled impact echo testing on concrete slab

Research output: Contribution to journalConference article

Abstract

Impact-echo is an effective method in identifying and detecting delamination in concrete structures. Recently, the contact sensor is replaced with air-coupled sensor due to the interest in rapid testing method. This paper presents a study of the optimum test configuration of air-coupled impact echo and conventional concrete-coupled impact echo tests by means of numerical simulation. Two-dimensional finite element analyses were performed on concrete slab to investigate the effect of impact-to-sensor distance and sensor height from concrete surface. Two concrete slabs, one without delamination and one with delamination, were modelled. For intact concrete, both sensors were effective in detecting concrete thickness at any point within the specified location range. However, for air-coupled IE performed on concrete with 40 mm delamination depth, optimum sensor location is 60 to 100 mm away from impact point at height of 10 mm.

Original languageEnglish
Article number012016
JournalIOP Conference Series: Materials Science and Engineering
Volume513
Issue number1
DOIs
Publication statusPublished - 25 Apr 2019
Event10th Asia Pacific Structural Engineering and Construction Conference 2018 - Langkawi, Malaysia
Duration: 13 Nov 201815 Nov 2018

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Concrete slabs
Delamination
Concretes
Sensors
Testing
Air
Contact sensors
Concrete construction
Computer simulation

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

2D finite element simulation of air-coupled impact echo testing on concrete slab. / Abd. Rahman, Norinah; Adnan, F. N.; Hamid, Roszilah.

In: IOP Conference Series: Materials Science and Engineering, Vol. 513, No. 1, 012016, 25.04.2019.

Research output: Contribution to journalConference article

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