Ultrasonic measurements of undamaged concrete layer thickness in a deteriorated concrete structure
| Autor: | Remko Akkerman, Andriejus Demcenko, H.A. Visser |
|---|---|
| Přispěvatelé: | Faculty of Engineering Technology, Production Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Concrete degradation
Materials science Mechanical Engineering Ultrasonic wave propagation 0211 other engineering and technologies 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Signal Layer thickness Wavelength 021105 building & construction 2023 OA procedure General Materials Science Ultrasonic sensor Center frequency Composite material Diffuse field 0210 nano-technology |
| Zdroj: | NDT & E international, 77, 63-72. Elsevier |
| ISSN: | 0963-8695 |
| Popis: | Ultrasonic wave propagation in deteriorated concrete structures was studied numerically and experimentally. Ultrasonic single-side access immersion pulse-echo and diffuse field measurements were performed in deteriorated concrete structures at 0.5 MHz center frequency. Numerically and experimentally it is shown that the undamaged layer thickness in a deteriorated concrete structure is measurable using pulse-echo measurements when the deterioration depth is larger than the wavelength. The signal overlapping, which occurs in the thin deteriorated layers, can be overcome using diffuse field measurements or a pattern matching technique. The ultrasonic experimental data were shown to be in good agreement with the widely used phenolphthalein test for concrete degradation. |
| Databáze: | OpenAIRE |
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