Detection of crack in cement-based specimens using microwave imaging with the 3-axis scanning system

Sergey Kharkovsky, Paritosh Giri

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

3 Citations (Scopus)

Abstract

Cracks often provide an early indication of damage in a structure and must be detected at an early stage. Detecting cracks in complex concrete structures is a challenging task. It is desired that plain as well as non-plain concrete surfaces with complex profiles can be interrogated and cracks on these surfaces as well as hidden under the dielectric coating can be detected. A 3-axis scanning mechanism which is able to perform profile contour-tracing during testing of specimens with complex surface profile is applied along with microwave instrumentation for detecting cracks using microwave images. Microwave instrumentation includes a performance network analyzer and an X-band open-ended waveguide antenna which is adjusted for parallel and perpendicular polarization with respect to the cracks. It is shown that the system is able to provide the detection and evaluation of the surface cracks in non-tilted as well as tilted cement-based specimens at preferred perpendicular polarization. It is also demonstrated that the surface crack can be detected when it is hidden under dielectric coating such as a plasterboard sheet.

Original languageEnglish
Title of host publicationI2MTC 2016
Subtitle of host publicationIEEE International Instrumentation and Measurement Technology Conference Proceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Electronic)9781467392204
ISBN (Print)9781467392211
DOIs
Publication statusPublished - 22 Jul 2016
Externally publishedYes
Event2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016 - Taipei, Taiwan, Province of China
Duration: 23 May 201626 May 2016

Conference

Conference2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016
CountryTaiwan, Province of China
CityTaipei
Period23/05/1626/05/16

Keywords

  • concrete
  • crack
  • dielectric coating
  • imaging system
  • microwave instrumentation
  • non-destructive testing
  • polarization
  • remote sensing
  • tilted specimens

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