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Showing 1 to 7 of 7 for “"active fiber composites"”.
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Active fiber composites for structural actuation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Thermoplastic active fiber composites for structural actuation
… actuators into a structure can lead to an active structural surface that can adapt by bending or straining to different operational conditions. This can be used to tune desired properties of the active system to their optimal levels. Due to their fast response time, high bandwidth, and the …
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Edge-defined film-fed growth of single-crystal piezoelectrics
… single-crystals of BNBZT can be grown in rod and fiber form, with direct applications in active fiber composites and related devices. For this work, <100> and <111> oriented, single-crystal rods and fibers were grown via ST and EFG. Fibers, 260-700[mu]m in diameter and over 1.0 meter long, were …
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Integral twist actuation of helicolpter rotor blades for vibration reduction
Active integral twist control for vibration reduction of helicopter rotors during forward flight is investigated. The twist deformation is obtained using embedded anisotropic piezocomposite actuators. An analytical framework is developed to examine integrally-twisted blades and their aeroelastic …
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Design, manufacturing, and testing of an active twist rotor
An Active Twist Rotor (ATR) is developed for future implementation of the individual blade control for vibration and noise reduction in helicopters. The rotor blade is integrally twisted by direct strain actuation using active fiber composites (AFC). In order to design and analyze an active blade, …
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Manufacturing and testing of an active compressor blade for aeroelastic studies
… deals with the manufacture of a 26-bladed 'active' rotor that will be used for developing an experimental database on turbomachinery aeroservoelastic phenomena, such as flutter and its control. The active rotor has blades made of two stress-bearing composite spars, aerodynamically shaped …
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A comparison of power harvesting techniques and related energy storage issues
… bimorph. Next, an investigation into new active fiber composite materials and macro fiber composite devices utilizing the d31 coefficient is performed in comparison to a monolithic piezoelectric bimorph. The information gathered here was used to design a two bimorph device termed the …