| || Piezo-actuated Vibration and Flutter Control
Author : Kandagal, S. B.;Venkatraman, Kartik
Source : Defence Science Journal ; Vol:56(4) ; 2006 ; pp 615-626
Subject : 621.38 Electronics;681.2 Instrumentation
Keywords : Vibration;Flutter control;Actuators;Sensors;Smart materials;Piezoceramics;Passive damping;Magnetostrictive materials;Electro-rheological fluids;Magneto-rheological fluids;Aeromechanical systems;Electrostrictive materials;Shape memory alloys
Abstract : The potential application of smart materials is being investigated by various researchers in the perspective of building intelligent systems. A smart structure consists of distributed actuators and sensors with associated processors to analyse and control the structure. Piezoceramics, magnetostrictive materials, electro-rheological fluids, magneto-rheological fluids, shape memory alloys, fibre optics are quite often used in realising a smart/intelligent system. In this paper, vibration and flutter control using piezoceramics is reviewed. Various aspects covering relative merits of piezoceramics with other smart materials and application capabilities are discussed.
| || Manufacturing technology of Lead Zirconate Titanate cylindrical elements for passive transducer arrays
Author : Gaware, P. S.;Yadav, O. P.;Kumar, H. H.
Source : Defence Science Journal ; Vol:53(3) ; 2003 ; pp 275-279
Subject : 629.5 Marine Sciences;623.8 Naval Science
Keywords : PZT;Lead zirconate titanate ;Piezoceramics;Passive transducer arrays
Abstract : State-of-the-art technology has been developed for the fabrication of 33 mm hollow cylindrical elements from Lanthanum-doped lead zirconate titanate based material suitable for passive surveillance arrays of SONAR systems. It covers properties of the material composition, isostatic pressing technique, precision machining, sintering to produce dielectrically sound distortion-free cylindrical elements, ceramic grinding, electroding, poling to achieve electromechanical properties, and evaluation of dielectric, piezoelectric, and elastic properties of the cylinders.