Design of modal sensors using PVDF array based on experimental modal analysis approach

PDF(2782 KB)

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 120-125.

ZHU Qiao , MAO Qi-bo

Author information +

History +

Abstract

By using experimental modal analysis approach, an experimental methodology for the design of modal sensors using PVDF array is presented. First, the curvature mode shapes (the second spatial derivatives of the mode shapes) of structure are directly obtained by experimental modal analysis using an array of rectangular PVDF patches, which were regularly arranged on the surface of structure. Then, the amplitudes of the curvature mode shape functions corresponding to the measurement point were taken as weights of PVDF array. So the weighted combinations of the PVDF outputs is proportional to the response of the target mode. Other modes are filtered out. Numerical simulation and experimental results show that the proposed method is effective and easy to operate. Furthermore, this method can be extended to two-dimensional structures and it has a good prospect of engineering application.

Key words

modal sensor / PVDF films / experimental modal analysis / modal filtering / curvature mode shapes

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

ZHU Qiao,MAO Qi-bo. Design of modal sensors using PVDF array based on experimental modal analysis approach[J]. Journal of Vibration and Shock, 2015, 34(19): 120-125

References

[1] Preumont A, François A, De Man P, et al. Distributed sensors with piezoelectric films in design of spatial filters for structural control[J]. Journal of sound and vibration, 2005, 282(3): 701-712.
[2] Preumont A, François A, De Man P, et al. Spatial filters in structural control[J]. Journal of sound and vibration, 2003, 265(1): 61-79.
[3] Gardonio P, Lee Y S, Elliott S J, et al. Analysis and measurement of a matched volume velocity sensor and uniform force actuator for active structural acoustic control[J]. The Journal of the Acoustical Society of America, 2001, 110(6): 3025-3031.
[4] Pietrzko S J, Mao Q. New results in active and passive control of sound transmission through double wall structures[J]. Aerospace science and technology, 2008, 12(1): 42-53.
[5] 范志强，马宏昊，沈兆武，等. 夹心式PVDF压力传感器压电特性及标定装置研究[J]. 振动与冲击, 2014, 33(16): 68-71.
Fan Z, Ma H, Shen Z, et al. Piezoelectric property of sandwich PVDF pressure gauge and its calibration device[J]. Journal of Vibration and Shock, 2014, 33(16): 68-71.
[6] Qiao P, Lu K, Lestari W, et al. Curvature mode shape-based damage detection in composite laminated plates[J]. Composite Structures, 2007, 80(3): 409-428.
[7] Hamey C S, Lestari W, Qiao P, et al. Experimental damage identification of carbon/epoxy composite beams using curvature mode shapes[J]. Structural Health Monitoring, 2004, 3(4): 333-353.
[8] Dixit A, Hanagud S. Comments on: Curvature mode shape-based damage assessment of carbon/epoxy composite beams[J]. Journal of Intelligent Material Systems and Structures, 2010, 21(6): 659-663.
[9] Lee C K, Moon F C. Modal sensors/actuators[J]. ASME Transactions Series E Journal of Applied Mechanics, 1990, 57: 434-441.
[10] Gu Y, Clark R L, Fuller C R, et al. Experiments on active control of plate vibration using piezoelectric actuators and polyvinylidene fluoride (PVDF) modal sensors[J]. Journal of vibration and acoustics, 1994, 116(3): 303-308.
[11] Preumont A, Francois A, Dubru S. Piezoelectric array sensing for real-time, broad-band sound radiation measurement[J]. Journal of vibration and acoustics, 1999, 121(4): 446-452.
[12] Mao Q, Pietrzko S J. Measurements of local volume displacement using a piezoelectric array[J]. Acta acustica united with acustica, 2006, 92(4): 556-566.
[13] Wang B T, Rogers C A. Modeling of finite-length spatially-distributed induced strain actuators for laminate beams and plates[J]. Journal of Intelligent Material Systems and Structures, 1991, 2(1): 38-58.
[14] Wang B T, Wang C C. Feasibility analysis of using Piezoceramic transducers for cantilever beam modal testing[J]. Smart Materials and Structures, 1997, 6: 106-116.
[15] Chen R L, Wang B T. The use of polyvinylidene fluoride films as sensors for the experimental modal analysis of structures[J]. Smart Materials and Structures, 2004, 13: 791-799.
[16] Yoon M K, Heider D, Gillespie Jr J W, et al. Local damage detection with the global fitting method using operating deflection shape data[J]. Journal of Nondestructive Evaluation, 2010, 29(1): 25-37.
[17] Wang B T. Structural modal testing with various actuators and sensors[J]. Mechanical Systems and Signal Processing, 1998, 12(5): 627-639.
[18] Carden E P, Fanning P. Vibration based condition monitoring: a review[J]. Structural Health Monitoring, 2004, 3(4): 355-377.
[19] Sumali H, Meissner K, Cudney H H. A piezoelectric array for sensing vibration modal coordinates[J]. Sensors and Actuators A: Physical, 2001, 93(2): 123-131.