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8 September 1993 Magnetostrictive structural elements fabricated from metallic glass
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Magnetostrictive adaptive materials have many benefits over competing materials such as piezoelectric types. These advantages include very low power and voltage, high toughness and strength, and the ease of composite manufacture. The amorphous metal Metglas was chosen for fabrication of tubular and bimorph samples of magnetostrictive composites. Metglas composites produced magnetostrictive strains greater than 50 ppm in tests. The composite Young's modulus was 7.8 X 106 psi, which is 78 percent of aluminum. Specific stiffness is 48 X 106 in, which is 47 percent of aluminum. This specific stiffness is favorable because the composite replaces heavy actuator components, such as high density piezoelectric materials, as well as supplying primary load carrying capability. Very low power requirements are anticipated because of the 90 percent conversion efficiency from magnetic to mechanical energy.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ralph C. Fenn, Dariusz A. Bushko, and Michael J. Gerver "Magnetostrictive structural elements fabricated from metallic glass", Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993);

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