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Mechanical impedance gauge based on measurement of strains on a vibrating rod
Luleå tekniska universitet.
Luleå tekniska universitet.
1982 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 80, no 3, p. 389-399Article in journal (Refereed) Published
Abstract [en]

An impedance gage based on measurement of strains at two different cross-sections of a vibrating rod is analyzed and tested. The gage rod, which may have variable characteristic impedance, is in contact with the object at one end and is driven by a harmonic vibrator at the other end. For conical and cylindrical rods explicit relations between point impedance and measured strains are derived. For a cylindrical gage rod of steel with length 800 mm, diameter 10 mm, and distance between strain gages 250 mm a fair agreement was generally obtained between experimental and theoretical point impedances of cylindrical test objects in the frequency range 50 Hz to 1. 7 kHz. Significant improvements in accuracy over that of the tested prototype are expected to be feasible

Place, publisher, year, edition, pages
1982. Vol. 80, no 3, p. 389-399
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-9868DOI: 10.1016/0022-460X(82)90280-2ISI: A1982ND81600009Scopus ID: 2-s2.0-0020477127Local ID: 892819b0-259e-11dd-9e62-000ea68e967bOAI: oai:DiVA.org:ltu-9868DiVA, id: diva2:982807
Note
Godkänd; 1982; 20080519 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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