Accession Number : AD0718387

Title :   The High Drive Properties of a New Composite Ceramic Piezoelectric Transducer Material.

Descriptive Note : Technical memo.,

Corporate Author : INTERAND CORP ROCKVILLE MD

Personal Author(s) : Lester,William W.

Report Date : 28 DEC 1970

Pagination or Media Count : 50

Abstract : The properties under high drive conditions of disc specimens of whisker reinforced composite ceramics are compared with the similar properties of commercially available non-reinforced ceramics of the same general family. The ceramics are of the lead zirconate titanate type, with the whisker content of two grades of alpha alumina (sapphire) in five weight per cent amount. Observations are made of stress, strain, electric field, resonant frequency, modulus, and electrical impedance. It is found that the whisker reinforced materials exhibit good linearity of stress, strain, resonant frequency, and modulus at high drive when compared with commercial samples of the same family, which are often markedly nonlinear. The conclusion is drawn that specimens, even of 'soft' type ceramic, when whisker reinforced, are made 'hard' in many of their properties. (Author)

Descriptors :   (*PIEZOELECTRIC TRANSDUCERS, COMPOSITE MATERIALS), (*COMPOSITE MATERIALS, *PIEZOELECTRIC CRYSTALS), CERAMIC MATERIALS, WHISKERS(CRYSTALS), REINFORCING MATERIALS, SAPPHIRE, ELECTRICAL PROPERTIES, LEAD COMPOUNDS, TITANATES, ZIRCONATES, MECHANICAL PROPERTIES

Subject Categories : Electrical and Electronic Equipment
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE