Proposed piezoceramic excitation for rotational and translational structural mobility measurements

Andrew Kankey, Stephen A. Hambric, Gary Koopmann, John Brian Fahnline

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A piezoceramic excitation approach is proposed that allows for a more convenient measurement of translational and rotational structural mobility compared with current methods. Using this approach, a lightweight, compact array could be designed and attached to a structure to induce a normal force as well as bending and torsional moments. This paper focuses on verifying the ability of piezoceramic patches, when aligned in certain formations, to mimic normal force and moment excitation and allow easy measurement of translational and rotational structural mobility. The demonstration test structure is a 0.3175 cm (0.125 in.) thick, clamped-clamped 30.48 cm (12 in.) by 2.54 cm (1 in.) aluminum beam to which two 2.54 cm (1 in.) by 1.27 cm (0.5 in.) piezoceramic patches are attached. Depending on the orientation of the patches, a normal force, bending moment or torsional moment is created. Accelerometers are used to measure the mobility at the center point of the beam. This method combined with the proposed array could be placed on any point on a structure to excite the structure and measure the point structural mobility. Experimental results are compared to numerical results from a finite element program to verify the representation of the piezoceramic patches. The specific arrangements of the patches are able to excite the desired modes and agree well with the numerical model.

Original languageEnglish (US)
Title of host publication19th National Conference on Noise Control Engineering 2005, Noise-Con 05
Pages661-668
Number of pages8
StatePublished - Dec 1 2005
Event19th National Conference on Noise Control Engineering 2005, Noise-Con 2005 - Minneapolis, MN, United States
Duration: Oct 15 2005Oct 17 2005

Publication series

Name19th National Conference on Noise Control Engineering 2005, Noise-Con 05
Volume1

Other

Other19th National Conference on Noise Control Engineering 2005, Noise-Con 2005
CountryUnited States
CityMinneapolis, MN
Period10/15/0510/17/05

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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  • Cite this

    Kankey, A., Hambric, S. A., Koopmann, G., & Fahnline, J. B. (2005). Proposed piezoceramic excitation for rotational and translational structural mobility measurements. In 19th National Conference on Noise Control Engineering 2005, Noise-Con 05 (pp. 661-668). (19th National Conference on Noise Control Engineering 2005, Noise-Con 05; Vol. 1).