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TECHNICAL PAPERS

Theoretical Development and Experimental Validation of Local Volume Displacement Sensors for a Vibrating Beam

[+] Author and Article Information
Marcellin B. Zahui

Mechanical Engineering Department, Lake Superior State University, 650 W. Easterday Avenue, Sault Sainte Marie, MI 49783

James W. Kamman, Koorosh Naghshineh

Mechanical and Aeronautical Engineering Department, Western Michigan University, Kalamazoo, MI 49008

J. Vib. Acoust 123(1), 110-118 (Aug 01, 2000) (9 pages) doi:10.1115/1.1320816 History: Received March 01, 1999; Revised August 01, 2000
Copyright © 2001 by ASME
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References

Figures

Grahic Jump Location
Top view of beam with coordinate system and PVDF sensor. The functions F(x) and −F(x) define the envelope of the sensor.
Grahic Jump Location
Top view of the beam. The PVDF sensor shapes designed to measure the total beam volume displacement for a clamped-clamped beam.
Grahic Jump Location
Top view of the beam. The PVDF sensor shapes designed to measure the total beam volume displacement for a clamped-simply supported beam.
Grahic Jump Location
Top view of the beam. The darker section represents the segment of the beam whose volume displacement is being sought.
Grahic Jump Location
Different possible PVDF sensor shapes for a clamped-clamped beam divided in three sections. The solid lines represent the segment of the beam whose volume displacement is being sought.
Grahic Jump Location
Different possible PVDF sensor shapes for a clamped-clamped beam divided in two sections. The solid lines represent the segment of the beam whose volume displacement is being sought.
Grahic Jump Location
Different possible PVDF sensor shapes for a clamped-simply supported beam divided in three sections. The solid lines represent the segment of the beam whose volume displacement is being sought.
Grahic Jump Location
PVDF sensor shapes implemented on the clamped beam divided in two equal sections. The solid lines represent the segment of the beam whose volume displacement was being sought with the sensor. The PVDF sensor for the right half of the beam (b) was bonded directly to the beam surface. The sensor for the left half of the beam (a) was bonded to the right half sensor.
Grahic Jump Location
Phase and magnitude of the local volume displacement of the right half of a clamped beam measured using accelerometers (dashed lines) and PVDF sensor bonded on top of the left half sensor (solid lines)
Grahic Jump Location
Phase and magnitude of the local volume displacement of the left half of a clamped beam measured using accelerometers (dashed lines) and PVDF sensor directly bonded to the beam surface (solid lines)
Grahic Jump Location
Integrated sensor for measurement of volume displacement of each half of the beam. Solid lines represent the sensor outline. Dashed lines represent the beam edges.

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