Title

The Effect of a Localized Mass Non-Uniformity on a Longitudinally Vibrating Piezoelectric Rod

Presenter Information

Husain Shekhani

Department

Mechanical and Aerospace Engineering

Major

Mechanical Engineering

Research Advisor

Stutts, Daniel S.

Advisor's Department

Mechanical and Aerospace Engineering

Funding Source

Missouri S&T Opportunities for Undergraduate Research Experiences (OURE) Program

Abstract

This paper describes the effects of a localized (point)-mass non-uniformity located arbitrarily on a longitudinally vibrating piezoelectric rod. The point-mass non-uniformity is accounted for using the receptance method. Expressions for the natural frequencies, modes, and the forced solution for the non-uniform rod and corresponding impedance are developed in closed form. The model is experimentally verified using impedance data from piezoelectric rods with attached concentrated masses. Methods for back-calculating the location of the point-mass using the experimental impedance trace are also described. The modeling approach detailed in this paper is potentially useful in the design of piezoelectric transformers and health monitoring of piezoelectric sensors and devices, as well as other piezoelectric devices.

Biography

Husain was born in Karachi, Pakistan and soon after moved to the United States with his parents. He currently resides in the St. Louis area. This May he will be graduating with a B.S. degree in Mechanical Engineering from Missouri S&T with emphasis in mechanical vibration. After graduation, he will pursue a doctorate degree in Electrical Engineering at Penn State. He serves a volunteer leader at the university’s local mosque.

Research Category

Engineering

Presentation Type

Poster Presentation

Document Type

Poster

Award

Engineering poster session, Third place

Location

Upper Atrium/Hallway

Presentation Date

10 Apr 2012, 1:00 pm - 3:00 pm

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Apr 10th, 1:00 PM Apr 10th, 3:00 PM

The Effect of a Localized Mass Non-Uniformity on a Longitudinally Vibrating Piezoelectric Rod

Upper Atrium/Hallway

This paper describes the effects of a localized (point)-mass non-uniformity located arbitrarily on a longitudinally vibrating piezoelectric rod. The point-mass non-uniformity is accounted for using the receptance method. Expressions for the natural frequencies, modes, and the forced solution for the non-uniform rod and corresponding impedance are developed in closed form. The model is experimentally verified using impedance data from piezoelectric rods with attached concentrated masses. Methods for back-calculating the location of the point-mass using the experimental impedance trace are also described. The modeling approach detailed in this paper is potentially useful in the design of piezoelectric transformers and health monitoring of piezoelectric sensors and devices, as well as other piezoelectric devices.