Review of State of Art of Smart Structures and Integrated Systems

Review of magnetostrictive patch transducers and applications in ultrasonic nondestructive testing of waveguides.

Laminated composite beams containing magnetostrictive layers are modeled as distributed parameter systems and the magnetostrictive layers are used to control the vibration suppression. Velocity feedback with constant gain distributed controller is chosen to achieve vibration suppression. A general formulation of the problem based on classical and shear deformation (the first-order as well as the third-order) theories is presented, and analytical solutions of the equations are developed for simply supported boundary conditions. The effect of material properties, lamination scheme, and placement of the magnetostrictive layers on vibration suppression is investigated.

http://iopscience.iop.org/article/10.1088/0964-1726/9/1/305/pdf

On vibration suppression of magnetostrictive beams

Transient analysis of laminated composite plates with embedded smart-material layers

The twenty-first century could be called the 'Multifunctional Materials Age' The inspiration for multifunctional materials comes from nature, and therefore these are often referred to as bio-inspired materials Bio-inspired materials encompass smart materials and structures, multifunctional materials and nano-structured materials This is a dawn of revolutionary materials that may provide a 'quantum jump' in performance and multi-capability This book focuses on smart materials, structures and systems, which are also referred to as intelligent, adaptive, active, sensory and metamorphic The purpose of these materials from the perspective of smart systems is their ability to minimize life-cycle cost and/or expand the performance envelope The ultimate goal is to develop biologically inspired multifunctional materials with the capability to adapt their structural characteristics (such as stiffness, damping and viscosity) as required, monitor their health condition, perform self-diagnosis and self-repair, morph their shape and undergo significant controlled motion over a wide range of operating conditions

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Smart Structures Theory

The magnetostrictive mini-actuator (MMA), with its unique characteristics such as large strain, high force and high energy density, is potentially a new class of actuator most suitable for distributed actuator applications such as vibration control of smart structures. The authors present a theoretical framework, validated experimentally, to develop an MMA and its feasibility for vibration control. Based on two-dimensional thermal analysis, the general form of thermoelastic mathematical model for characterizing magnetostrictive-based actuators is proposed and experimentally validated. Thermal effects, at other than the initial state, are shown to have a significant effect on attainable strain and force of an MMA. Experimental results show that the MMA has good static and dynamic performance, and is suitable for applications in smart structures.

http://iopscience.iop.org/article/10.1088/0964-1726/3/2/001/pdf

M Anjanappa

Papers

A theoretical and experimental study of magnetostrictive mini-actuators.