Modeling and characterization of macro-fiber composite transducers for Lamb wave excitation

2010 ◽  
Author(s):  
Manuel Collet ◽  
Massimo Ruzzene ◽  
Ken Cunefare ◽  
Buli Xu
Keyword(s):  
Lamb Wave ◽  
Fiber Composite ◽  
Wave Excitation ◽  
Macro Fiber Composite

scholarly journals Lamb wave transducers made of piezoelectric macro-fiber composite

2012 ◽  
Vol 20 (8) ◽  
pp. 1138-1158 ◽  
Author(s):  
Michał Mańka ◽  
Mateusz Rosiek ◽  
Adam Martowicz ◽  
Tadeusz Stepinski ◽  
Tadeusz Uhl
Keyword(s):  
Lamb Wave ◽  
Fiber Composite ◽  
Macro Fiber Composite

Characterization of Piezoelectric Macrofiber Composite Actuated Winglets

2014 ◽  
Author(s):  
Tufan Kumar Guha ◽  
William Oates ◽  
Rajan Kumar
Keyword(s):  
Fiber Composite ◽  
Pressure Measurements ◽  
Pressure Loading ◽  
Tip Vortices ◽  
Resonance Behavior ◽  
Pressure Distributions ◽  
Point Pressure ◽  
Macro Fiber Composite ◽  
Wing Tip

Piezoelectric macro-fiber composite (MFC) structures have been used to develop oscillating winglets for active control of wing-tip vortices. A MFC structure was embedded inside a wing-section to oscillate the winglet at its free end. The goal is to weaken the potentially harmful tip vortices by introducing controlled instabilities through both spatial and temporal perturbations produced by an oscillating winglet. In the present study we have characterized MFC actuated winglets under different input excitation and pressure loading conditions. It consisted of bench-top experiments to characterize the structural resonance, with and without point pressure loading and wind tunnel tests involving distributed pressure loading. Surface pressure measurements were carried out at three spanwise locations to measure the effect of oscillating winglet on the pressure distributions on the wing surface. MFC actuated winglets show bimodal resonance behavior and the modes of oscillations are independent of magnitude of input excitation and the pressure loading.

Characterization of mode selective actuator and sensor systems for Lamb wave excitation

2012 ◽  
Author(s):  
Daniel Schmidt ◽  
Christoph Heinze ◽  
Wolfgang Hillger ◽  
Artur Szewieczek ◽  
Michael Sinapius ◽  
...  
Keyword(s):  
Lamb Wave ◽  
Sensor Systems ◽  
Wave Excitation

Analytical and Experimental Characterization of Macro-Fiber Composite Actuated Thin Clamped-Free Unimorph Benders

2010 ◽  
Vol 132 (5) ◽  
Author(s):  
Onur Bilgen ◽  
Alper Erturk ◽  
Daniel J. Inman
Keyword(s):  
Fiber Composite ◽  
Steel Substrate ◽  
Actuation Voltage ◽  
Structural Response ◽  
Distributed Parameter ◽  
Experimental Characterization ◽  
Macro Fiber Composite ◽  
Cantilevered Beams ◽  
Tip Velocity

A type of piezoceramic composite actuator known as Macro-Fiber Composite (MFC) is used commonly for actuation in smart-material structures. In this paper, a linear distributed parameter electromechanical model is proposed to predict the structural response to MFC actuated clamped-free thin cantilevered beams. The structural frequency response behavior between the tip velocity of the cantilever beam and the actuation voltage of the piezoelectric material is investigated experimentally for cantilevered unimorph MFC actuated benders with aluminum, brass, and steel substrate materials with different thicknesses. Good correlation is observed between the model and the experimental observations.

Manufacturing and Mechanics-Based Characterization of Macro Fiber Composite Actuators

2002 ◽  
Author(s):  
R. Brett Williams ◽  
Brian W. Grimsley ◽  
Daniel J. Inman ◽  
W. Keats Wilkie
Keyword(s):  
Lead Zirconate Titanate ◽  
Structural Design ◽  
Fiber Composite ◽  
Cure Kinetics ◽  
Ceramic Materials ◽  
Lead Zirconate ◽  
Linear Elastic ◽  
Lamination Theory ◽  
Macro Fiber Composite

The use of piezoelectric ceramic materials for structural actuation is a fairly well developed practice that has found use in a wide variety of applications. However, just as advanced composites offer many benefits over traditional engineering materials for structural design, actuators that utilize the active properties of piezoelectric fibers can improve upon many of the limitations encountered with monolithic piezoceramic devices used to control structural dynamics. This paper discusses the Macro Fiber Composite (MFC) actuator, which utilizes piezoceramic fibers, for example, lead zirconate titanate (PZT), embedded in an epoxy matrix for structural actuation. An overview of the MFC assembly process is presented, followed by a cure kinetics model that describes the behavior of the thermosetting matrix. This empirical model is seen to agree closely with the experimental data. Lastly, a hybrid classical lamination theory is developed to predict the linear elastic properties of the MFC package as a function of the PZT fiber lamination angle.

Macro-Fiber Composite Actuators for Flow Control of a Variable Camber Airfoil

2010 ◽  
Vol 22 (1) ◽  
pp. 81-91 ◽  
Author(s):  
Onur Bilgen ◽  
Carlos De Marqui ◽  
Kevin B. Kochersberger ◽  
Daniel J. Inman
Keyword(s):  
Flow Control ◽  
Fiber Composite ◽  
Macro Fiber Composite
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