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Laser vibrometry measurements of an optically smooth rotating spindle
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-8355-2414
2007 (English)In: Mechanical systems and signal processing, ISSN 0888-3270, E-ISSN 1096-1216, Vol. 21, no 4, p. 1739-1745Article in journal (Refereed) Published
Abstract [en]

Laser doppler vibrometry (LDV) is a well-established non-contact method, commonly used for vibration measurements on static objects. However, the method has limitations when applied to rotating objects. The LDV signal will contain periodically repeated speckle noise and a mix of vibration velocity components. In this paper, the crosstalk between vibration velocity components in laser vibrometry measurements of a rotating dummy tool in a milling machine spindle is studied. The spindle is excited by an active magnetic bearing (AMB) and the response is measured by LDV in one direction and inductive displacement sensors in two orthogonal directions simultaneously. The work shows how the LDV crosstalk problem can be avoided if the measurement surface is optically smooth, hence the LDV technique can be used when measuring spindle dynamics.

Place, publisher, year, edition, pages
2007. Vol. 21, no 4, p. 1739-1745
National Category
Fluid Mechanics and Acoustics Other Civil Engineering Applied Mechanics
Research subject
Engineering Acoustics; Operation and Maintenance; Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-4075DOI: 10.1016/j.ymssp.2006.08.006ISI: 000244649000012Scopus ID: 2-s2.0-33846817093Local ID: 1efc52d0-c024-11db-834c-000ea68e967bOAI: oai:DiVA.org:ltu-4075DiVA, id: diva2:976937
Note

Validerad; 2007; 20070219 (biem)

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

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Tatar, KouroshRantatalo, MattiGren, Per

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