Abstract
![CDATA[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 language | English |
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Title of host publication | Proceedings of 2016 IEEE International Instrumentation and Measurement Technology Conference, 23-26 May 2016, Taipei, Taiwan |
Publisher | IEEE |
Pages | 563-567 |
Number of pages | 5 |
ISBN (Print) | 9781467392204 |
DOIs | |
Publication status | Published - 2016 |
Event | IEEE International Instrumentation and Measurement Technology Conference - Duration: 23 May 2016 → … |
Conference
Conference | IEEE International Instrumentation and Measurement Technology Conference |
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Period | 23/05/16 → … |
Keywords
- concrete construction
- cracking
- microwave imaging
- remote sensing