Accession Number : ADA300215

Title :   Smart Materials for Army Structures.

Descriptive Note : Final rept. Jul 91-Feb 92,

Corporate Author : QUANTUM CONSULTANTS INC EAST LANSING MI

Personal Author(s) : Ramamurthy, Subramaniam ; Gandhi, Mukesh V. ; Thompson, Brian S.

PDF Url : ADA300215

Report Date : APR 1992

Pagination or Media Count : 206

Abstract : This final report documents the results of the research and development activities focused on the development of a new generation of smart structures incorporating embedded hybrid multiple actuation systems which capitalize on the diverse strengths of both electrorheological fluids and piezoelectric materials, and employ fiber-optic sensing systems. A state-of-the-art review of smart materials and structures technologies has been undertaken, and an in-depth critique of the current generation of actuators and sensors for smart structures applications has also been presented. An in-depth review of analytical, computational and experimental investigations on controlling the vibrational characteristics of beams, plates and a variety of prototype structural systems has also been undertaken. Furthermore ,variational formulations for predicting the performance characteristics of smart structures featuring hybrid embedded piezoelectric and electrorheological domains have been successfully developed. These formulations will form viable bases for the development of finite element design tools for Phase II. A comprehensive library of smart structures and articulating mechanical systems applications has been developed and documented. The principal research findings distilled from these comprehensive set of investigations clearly indicate that it is possible to significantly tailor the vibrational and aeroelastic characteristics of structural and mechanical systems for US Army applications.

Descriptors :   *FIBER OPTICS, *COMPOSITE MATERIALS, *HELICOPTERS, *ARTIFICIAL INTELLIGENCE, *OPTICAL DETECTORS, VIBRATION, NEURAL NETS, FINITE ELEMENT ANALYSIS, DEFORMATION, COMPOSITE STRUCTURES, AIRFOILS, ALLOYS, AEROELASTICITY, PIEZOELECTRIC MATERIALS, AERODYNAMIC CHARACTERISTICS, RHEOLOGY, ACTUATORS, ARMY, ELECTROSTRICTION, MAGNETOSTRICTION, STRUCTURAL COMPONENTS.

Subject Categories : Laminates and Composite Materials
      Cybernetics
      Fiber Optics and Integrated Optics
      Aerodynamics
      Helicopters
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE