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 language | English |
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Title of host publication | I2MTC 2016 |
Subtitle of host publication | IEEE International Instrumentation and Measurement Technology Conference Proceedings |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Number of pages | 5 |
ISBN (Electronic) | 9781467392204 |
ISBN (Print) | 9781467392211 |
DOIs | |
Publication status | Published - 22 Jul 2016 |
Externally published | Yes |
Event | 2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016 - Taipei, Taiwan Duration: 23 May 2016 → 26 May 2016 |
Conference
Conference | 2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016 |
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Country/Territory | Taiwan |
City | Taipei |
Period | 23/05/16 → 26/05/16 |
Keywords
- concrete
- crack
- dielectric coating
- imaging system
- microwave instrumentation
- non-destructive testing
- polarization
- remote sensing
- tilted specimens