Research and Development of Smart Giant Magnetostriction Composite Materials Using Powder Metallurgic Technology and Their Applications to Advanced Devices

Powder metallurgic giant magnetostrictive composite materials (GMM) which are special kind of metallic compounds have a wide range of application possibilities. These materials have a homogeneous structure, low internal stresses and low cost, which make them able to create magnetostrictive elements. Therefore, GMM can be used to develop positioning as well as vibration actuators with quick response and good repeatability. It is believed that the high power and torque developed by these materials in addition to the wide frequency range and applications as sensors will open new possibilities for device designers and engineers. This research realizes those possibilities of smart anisotropic powder metallurgic giant magnetostrictive composite materials and confirms those properties by putting them to work in high output as a vibration suppression device equipped with smart GMM actuators for the space structure is reported.