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A New Method of Acoustical Remote Evaluation of Defective Structures and Material Characterization
Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
Ansvarlig organisasjon
2007 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The feasibility of a remote monitoring of structures for a progressive damage assessment as well as material characterization using a simple and inexpensive experimental setup is discussed. The method is based on a remote acoustic excitation of transverse vibrations on a membrane using an ordinary broadband low frequency loudspeaker, and the measurement of the response using a Laser Doppler Vibrometer (LDV). Theoretical modeling is also developed to correlate the experimental results obtained, and this yields a new method for Non Destructive Testing (NDT) of sheet-like materials. The function generator provides an input voltage of a sine signal to the loudspeaker, and laser detection of the surface vibrational response of the sample is accomplished with the laser vibrometer.

sted, utgiver, år, opplag, sider
Canadian Acoustical Association , 2007.
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-8342Lokal ID: oai:bth.se:forskinfoD170127A5C077E27C1257505005663EAOAI: oai:DiVA.org:bth-8342DiVA, id: diva2:836052
Konferanse
2007 CAA Annual Conference
Tilgjengelig fra: 2012-09-18 Laget: 2008-11-18 Sist oppdatert: 2017-03-17bibliografisk kontrollert

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Hedberg, ClaesKao-Walter, Sharon

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