Paper number 1234

STUDY OF VIBRATION MODAL ESTIMATION FOR COMPOSITE BEAM WITH PZT THIN FILM SENSOR SYSTEM

Nobuo Oshima, Takehito Fukuda and Shinya Motogi

Faculty of Engineering, Osaka City University
3-3-138, Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan

Summary

In the present paper, a lead zirconate titanates (PZT) thin film is adopted as a vibration sensor. The PZT thin film sensor is made by the hydrothermal method. A set of these firms is sandwiched between flexible electric circuit sheets to build the smart layer. Two types of point sensors systems (PSS) are selected as the sensor system for vibration modal estimation of composite beams. One is an array of point sensors system (APSS) and another is a distributed point sensors system (DPSS). The experiment is conducted by sinusoidal forced vibration tests. The capabilities of PSSs for modal estimation of the composite beam are experimentally demonstrated.

Keywords

PZT thin film sensor, point sensors system (PSS), Array of point sensors system (APSS), distributed point sensors system (DPSS), modal estimation, smart composites, hydrothermal method.