Browsing Scholarly Works, Center for Intelligent Material Systems and Structures (CIMSS) by Title
Now showing items 1-20 of 31
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Active structural acoustic control of broadband disturbances
(Acoustical Society of America, 1992-09-01)A control design technique is developed to actively suppress the acoustic power radiated from a structure, with negligible fluid loading, that is persistently excited by narrow-band or broadband disturbances. The problem ... -
Active vibration and structural acoustic control of shape memory alloy hybrid composites: Experimental results
(Acoustical Society of America, 1990-12-01)Shape memory alloy hybrid composites have been shown both by analytical simulations and experiments to be effective adaptive materials for active vibration and structural acoustics control [Rogers and Robertshaw, Engineering ... -
Active Vibration Isolation Using an Induced Strain Actuator with Application to Automotive Seat Suspensions
(Hindawi, 2001-01-01)Active vibration isolation of automotive seats requires actuators that achieve millimeter-range displacements and forces on the order of 300 N. Recent developments in piezoceramic actuator technology provide a means for ... -
Computational analysis of ionic polymer cluster energetics
(American Institute of Physics, 2005-06-01)In recent years there has been considerable study of the potential mechanisms underlying the electromechanical response of ionic-polymer-metal composites. The most recent models have been based on the response of the ... -
Direct and converse effect in magnetoelectric laminate composites
(AIP Publishing, 2011-06-01)In this letter, we analyze the direct and converse effect in laminate composites of magnetostrictive and piezoelectric materials. Our results deterministically show that direct magnetoelectric (ME) effect is maximized at ... -
Dynamic analysis of piezoelectric actuator-driven circular rings using an impedance approach
(Acoustical Society of America, 1994-09-01)This paper presents a dynamic model for the response of a circular ring excited by piezoelectric transducer (PZT) actuators bonded on the ring surface. The dynamic response is determined based on the dynamic interaction ... -
Electromechanical behavior of 001 -textured Pb(Mg1/3Nb2/3)O-3-PbTiO3 ceramics
(AIP Publishing, 2012-05-01)[001]-textured Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) ceramics were synthesized by using templated grain growth method. Significantly high [001] texture degree corresponding to 0.98 Lotgering factor was achieved at 1 vol. % ... -
Enhanced Piezoelectric Shunt Design
(Hindawi, 2003-01-01)Piezoceramic material connected to an electronic shunt branch circuit has formed a successful vibration reduction device. One drawback of the conventional electronic shunt circuit is the large inductance required when ... -
Fatigue mechanism of textured Pb(Mg1/3Nb2/3)O-3-PbTiO3 ceramics
(AIP Publishing, 2013-08-01)Grain orientation, BaTiO3 heterogeneous template content, and electrode materials are expected to play an important role in controlling the polarization fatigue behavior of < 001 > textured Pb(Mg1/3Nb2/3)O-3-PbTiO3 ceramics. ... -
Ferroelectric properties and dynamic scaling of < 100 > oriented (K0.5Na0.5)NbO3 single crystals
(AIP Publishing, 2011-06-01)In this letter, we report the dielectric and ferroelectric (FE) characteristics of potassium sodium niobate (K0.5Na0.5NbO3) single crystals grown by flux method. Orientation analysis of as-grown cubical-shaped crystals was ... -
Giant energy density in 001 -textured Pb(Mg1/3Nb2/3)O-3-PbZrO3-PbTiO3 piezoelectric ceramics
(AIP Publishing, 2013-01-01)Pb(Zr,Ti)O-3 (PZT) based compositions have been challenging to texture or grow in a single crystal form due to the incongruent melting point of ZrO2. Here we demonstrate the method for achieving 90% textured PZT-based ... -
Giant self-biased magnetoelectric coupling in co-fired textured layered composites
(AIP Publishing, 2013-02-01)Co-fired magnetostrictive/piezoelectric/magnetostrictive laminate structure with silver inner electrode was synthesized and characterized. We demonstrate integration of textured piezoelectric microstructure with the ... -
High surface area electrodes in ionic polymer transducers: Numerical and experimental investigations of the electro-chemical behavior
(American Institute of Physics, 2011-04-01)Ionomeric polymer transducer (IPT) is an electroactive polymer that has received considerable attention due to its ability to generate large bending strain (> 5%) and moderate stress at low applied voltages (+/-2 V). Ionic ... -
High thermal stability of piezoelectric properties in (Na0.5Bi0.5TiO3)(x)-(BaTiO3)(y)-(Na0.5K0.5NbO3)(1-x-y) ceramics
(AIP Publishing, 2013-01-01)We report the piezoelectric and ferroelectric properties of (Na0.5Bi0.5TiO3)(x)-(BaTiO3)(y)-(Na0.5K0.5NbO3)(1-x-y) ceramics for Na0.5K0.5NbO3 rich end of composition (x, y <= 0.04 mol. %). These compositions were found to ... -
Ionic polymer cluster energetics: Computational analysis of pendant chain stiffness and charge imbalance
(American Institute of Physics, 2005-06-15)In recent years there has been considerable study of the potential mechanisms underlying the electromechanical response of ionic-polymer-metal composites. The most recent models have been based on the response of the ... -
Modeling of distributed piezoelectric actuators integrated with thin cylindrical shells
(Acoustical Society of America, 1994-09-01)The dynamic interaction between induced strain piezoelectric (PZT) actuators and their host structures is often ignored in the modeling of intelligent structures. A more realistic investigation of intelligent material ... -
Modeling of induced strain actuation of shell structures
(Acoustical Society of America, 1995-05-01)Based on the thin-shell Donnell theory, a model to represent the action of discrete induced strain actuator patches symmetrically bonded to the surface of a circular cylindrical shell has been developed. The model provides ... -
Modeling of Shock Propagation and Attenuation in Viscoelastic Components
(Hindawi, 2001-01-01)Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High damping viscoelastic materials are ... -
Modeling the electrical impedance response of ionic polymer transducers
(American Institute of Physics, 2008-07-01)An analytical study is presented that investigates the electrical impedance response of the ionic polymer transducer. Experimental studies have shown that the electromechanical response of these active materials is highly ... -
Nonlinear piezoelectricity in electroelastic energy harvesters: Modeling and experimental identification
(American Institute of Physics, 2010-10-01)We propose and experimentally validate a first-principles based model for the nonlinear piezoelectric response of an electroelastic energy harvester. The analysis herein highlights the importance of modeling inherent ...
