Quantification of delamination in a composite floor using a novel damage index

Nadom Khalifa Mutlib, Shahrizan Baharom

Research output: Contribution to journalArticle

Abstract

The delamination of concrete from steel decking will reduce the strength and decrease the stiffness of the composite slab. Visual monitoring of delamination is typically not possible in many cases. A possible alternative is ultrasonic-based health monitoring. In this study, a novel damage index (DI) based on the absolute energy change (AEC) of the ultrasonic waves is adopted to quantify delamination damage in the composite floor. AEC-DI was constructed based on the decomposed signals provided by the wavelet transform. The monitoring process of the composite floor was conducted ultrasonically under flexural loading. An ultrasonic surface (Rayleigh) wave is employed for damage detection using gel-coupled piezoceramic sensors. The results revealed that the reliability and accuracy of AEC-DI in detecting composite floor separation is better than that of RMSD-DI.

Original languageEnglish
Pages (from-to)1-22
Number of pages22
JournalNondestructive Testing and Evaluation
DOIs
Publication statusAccepted/In press - 22 Jun 2018

Fingerprint

Delamination
damage
composite materials
Composite materials
Ultrasonics
Rayleigh waves
Monitoring
Damage detection
Steel
Ultrasonic waves
Process monitoring
ultrasonics
Surface waves
Wavelet transforms
Gels
Stiffness
Health
Concretes
ultrasonic radiation
wavelet analysis

Keywords

  • AEC damage index
  • Composite floor
  • discrete wavelet transform
  • gel-coupled sensor
  • ultrasonic waves

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)

Cite this

Quantification of delamination in a composite floor using a novel damage index. / Mutlib, Nadom Khalifa; Baharom, Shahrizan.

In: Nondestructive Testing and Evaluation, 22.06.2018, p. 1-22.

Research output: Contribution to journalArticle

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