The Application of Piezoceramic Transducers for Structural Modal Testing

• Main Author: 王重杰
• Other Authors: 王柏村
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/92871293654958066452

碩士 === 國立屏東科技大學 === 機械工程技術研究所 === 83 === 　　This paper explores the possibility of using piezoceramic transducers for structural modal testing of cantilever beams. the PZT and PVDF, the piezoceramic transducers, are recently used to serve as actuator and sensor respectively. The analytical formulation of frequency response functions (FRFs) between accelerometer/point force, accelerometer/PZT, PVDF/point force and PVDF/PZT is first determined. Next, ahd model analysis is accomplished by the analytical analysis, finite element analysis, CADA-PC software synthetic analysis, and experimental analysis. The results show that the modal parameters, including natural frequencies, more shapes, and damping ratios, can be properly obtained. This study successfully utilizes piezoceramic transducers for the experimental modal analysis in cantilever beams. the analysis technqiues can also be applied to the vibration control or modal testing of other complex structures.