Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Non-contact surface wave testing of pavements using a rolling microphone array
We present experiments where a multichannel array of microphones and an automatic source are attached on a small trolley so that measurements can be taken almost continuously while moving. Measurements on asphalt or concrete pavement layers are based on supersonic leaky air-coupled surface waves. Results show that microphones can be successfully used to measure surface wave dispersion curves even while moving along the surface. We also demonstrate that the same approach can be applied to softer granular pavement layers utilizing the evanescent acoustic field in the air close to the soil surface. This opens up the possibility for faster on-the-fly surface wave testing of pavement layers since surface contact is no longer required.
Non-contact surface wave testing of pavements using a rolling microphone array
We present experiments where a multichannel array of microphones and an automatic source are attached on a small trolley so that measurements can be taken almost continuously while moving. Measurements on asphalt or concrete pavement layers are based on supersonic leaky air-coupled surface waves. Results show that microphones can be successfully used to measure surface wave dispersion curves even while moving along the surface. We also demonstrate that the same approach can be applied to softer granular pavement layers utilizing the evanescent acoustic field in the air close to the soil surface. This opens up the possibility for faster on-the-fly surface wave testing of pavement layers since surface contact is no longer required.
Non-contact surface wave testing of pavements using a rolling microphone array
Berührungslose Prüfung von Straßenbelägen mit Oberflächenwellen unter Verwendung eines rollenden Mikrophonarrays
Ryden, Nils (Autor:in) / Lowe, Michael J.S. (Autor:in) / Cawley, Peter (Autor:in)
2009
6 Seiten, 8 Bilder, 6 Quellen
(nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
Non-contact surface wave scanning of pavements using a rolling microphone array
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