Journal ArticleDOI
Feasibility analysis of using piezoceramic transducers for cantilever beam modal testing
Bor-Tsuen Wang,Chung-Chei Wang +1 more
TLDR
In this article, a theoretical analysis of the application of piezoceramic transducers to cantilever beam modal testing is presented, where the frequency response functions (FRFs) for the four pairs of sensors and actuators are derived and written in the conventional modal format.Abstract:
This paper presents a theoretical analysis of the application of piezoceramic transducers to cantilever beam modal testing. Four pairs of sensors and actuators, including accelerometer - point force, accelerometer - PZT, PVDF - point force and PVDF - PZT, are considered. The frequency response functions (FRFs) for the four pairs of sensors and actuators are first derived and written in the conventional modal format. The characteristics of modal parameters can thus be interpreted through the FRFs. A column of the FRF matrix can then be obtained based on the theoretical formulation. A curve-fitting algorithm is then applied to extract the modal parameters, such as natural frequencies, mode shapes and damping ratios. Results show that any sensor - actuator pair can successfully determine natural frequencies and damping ratios. Point types of transducer result in the displacement mode shapes, while piezoceramic transducers that are strip types and distributed in sense give the mode shapes of the slope difference between the edges of piezoceramic transducers. The paper provides the theoretical basis of applying piezoceramic transducers to experimental modal analysis and numerically supports the feasibility of cantilever beam modal testing using piezoceramic transducers.read more
Citations
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Journal ArticleDOI
Integral resonant control of collocated smart structures
TL;DR: In this article, the authors introduce integral resonant control (IRC), a simple, robust and well-performing technique for vibration control in smart structures with collocated sensors and actuators.
Journal ArticleDOI
Experimental Damage Identification of Carbon/Epoxy Composite Beams Using Curvature Mode Shapes:
TL;DR: In this article, experimental aspects of dynamic response-based damage detection technique on carbon/ epoxy composites are addressed, where smart piezoelectric materials are used as sensors or actuators to acquire the curvature modes of structures.
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Structural dynamics of microsystems—current state of research and future directions
Rongming Lin,W.J. Wang +1 more
TL;DR: In this paper, the electro-mechanical coupling of typical MEMS devices is defined and introduced, followed by an in-depth review of the various existing modeling and simulation techniques.
Journal ArticleDOI
Vibration of beams with arbitrary discontinuities and boundary conditions
Jialai Wang,Pizhong Qiao +1 more
TL;DR: In this paper, a general solution of the vibration of an Euler-Bernoulli beam with arbitrary type of discontinuity at arbitrary number of locations is presented, where Heaviside's function is used to express the modal displacement of the whole beam by a single function.
Journal ArticleDOI
Improved Damage Detection for Beam-type Structures using a Uniform Load Surface
Jialai Wang,Pizhong Qiao +1 more
TL;DR: In this paper, a combined analytical and experimental study is conducted to develop efficient and effective damage detection techniques for beam-type structures, and the results showed that these techniques are more effective than other vibration-based damage detection methods.
References
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Use of piezoelectric actuators as elements of intelligent structures
Edward F. Crawley,Javier de Luis +1 more
TL;DR: In this paper, a scaling analysis is performed to demonstrate that the effectiveness of actuators is independent of the size of the structure and evaluate various piezoelectric materials based on their effectiveness in transmitting strain to the substructure.
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Journal ArticleDOI
Distributed Piezoelectric-Polymer Active Vibration Control of a Cantilever Beam
Thomas Bailey,James E. Hubbard +1 more
TL;DR: In this article, an active vibration damper for a cantilever beam was designed using a distributed-parameter actuator and distributedparameter control theory, and preliminary testing of the damper was performed on the first mode of the beam.
Journal ArticleDOI
Piezoelectric Actuators for Distributed Vibration Excitation of Thin Plates
TL;DR: In this article, the authors demonstrate that modes can be selectively excited and that the geometry of the actuator shape markedly affects the distribution of the response among modes, and that it is possible to tailor the shape of an actuator to either excite or suppress particular modes.
Journal ArticleDOI
Laminate Plate Theory for Spatially Distributed Induced Strain Actuators
Bor-Tsuen Wang,Craig A. Rogers +1 more
TL;DR: In this paper, an orthotropic angle-ply laminate with an embedded piezoceramic patch is presented to show the coupling of bending and extension, and a comparison between the current work and that of Dimitriadis et al. is given.