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Bending and acoustic waves in a water-filled box studied by pulsed TV holography and LDV
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
2006 (English)In: Optics and lasers in engineering, ISSN 0143-8166, E-ISSN 1873-0302, Vol. 44, no 11, p. 1146-1157Article in journal (Refereed) Published
Abstract [en]

Pulsed TV holography and laser Doppler vibrometry (LDV) are non-destructive and non-contacting methods useful in the testing of mechanical properties in a wall separating two media. This paper presents comparative studies of transient, propagating bending waves in an impact-loaded thin aluminium wall of a box, and acoustic waves generated in the water inside the box using the two mentioned methods. Besides being evaluated and compared, the results were used to investigate qualities of the methods for the specific applications. The measured wave propagations obtained from the two methods are consistent regarding both amplitude and phase. Further, transient pressure fields in the water have been computed from the pulsed TV holography measurements. Since none of the two methods are capable of providing both temporal and spatial information simultaneously, they complement each other.

Place, publisher, year, edition, pages
2006. Vol. 44, no 11, p. 1146-1157
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-12429DOI: 10.1016/j.optlaseng.2005.10.009ISI: 000240162500003Scopus ID: 2-s2.0-33746489433Local ID: b949d8f0-c356-11db-9ea3-000ea68e967bOAI: oai:DiVA.org:ltu-12429DiVA, id: diva2:985380
Note

Validerad; 2006; 20070105 (pafi)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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