A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Damage detection in concrete using diffuse ultrasound measurements
Surface wave velocities over the sonic frequency range (< 20 KHz) were measured on concrete specimens undergoing various cycles of loading and unloading. Acoustic Emission test (AE) was conducted simultaneously to monitor the microcracking activities. The sonic surface wave velocity was found to be highly stress-dependent. The observed changes in surface wavespeed are repeatable and follow a particular trend. By measuring the wave velocities in both loading and unloading phases, the effects of stress and stress-induced damages could be distinguished. The observed trend could be explained by a combination of acoustoelasticity and microcracking theories.
Damage detection in concrete using diffuse ultrasound measurements
Surface wave velocities over the sonic frequency range (< 20 KHz) were measured on concrete specimens undergoing various cycles of loading and unloading. Acoustic Emission test (AE) was conducted simultaneously to monitor the microcracking activities. The sonic surface wave velocity was found to be highly stress-dependent. The observed changes in surface wavespeed are repeatable and follow a particular trend. By measuring the wave velocities in both loading and unloading phases, the effects of stress and stress-induced damages could be distinguished. The observed trend could be explained by a combination of acoustoelasticity and microcracking theories.
Damage detection in concrete using diffuse ultrasound measurements
Schadensnachweis in Beton mittels diffuser Ultraschallmessungen
Deroo, Frederik (author) / Jacobs, Laurence J. (author) / Kim, Jin-Yeon (author) / Qu, Jianmin (author) / Sabra, Karim (author)
2009
8 Seiten, 7 Bilder, 15 Quellen
Conference paper
Storage medium
English
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