Non-contact surface wave scanning of pavements using a rolling microphone array

Summary, in English

We present experiments with a rolling multichannel microphone array where measurements can be taken continuously while moving. Leaky air-coupled surface waves are measured with ordinary non-directional audio microphones. Results show that microphones can be successfully used to produce a realistic phase velocity spectrum even while moving along the surface. The paper presents some theoretical background along with initial experimental results using the moving microphone array.

• Författare: Nils Rydén; Michael J. S. Lowe; Peter Cawley
• Avdelning/ar: Teknisk geologi
• Publiceringsår: 2008
• Språk: Engelska
• Sidor: 1328-1332
• Publikation/Tidskrift/Serie: Review of Progress in Quantitative Nondestructive Evaluation, vol 27A and 27B
• Volym: 975
• Länkar: http://dx.doi.org/10.1063/1.2902588
• Dokumenttyp: Konferensbidrag
• Förlag: American Institute of Physics (AIP)
• Ämne: Geotechnical Engineering
• Nyckelord: microphones; non-contact; pavement; surface waves; lamb waves
• Conference name: 34th Annual Review of Progress in Quantitative Nondestructive Evaluation
• Conference date: 2007-07-22 - 2007-07-27
• Conference place: Golden, Co, United States
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1551-7616; ISSN: 0094-243X