Accession Number : ADA305156

Title :   Simultaneous Measurement of Multilayered Composites,

Corporate Author : BENDIX CORP KANSAS CITY MO KANSAS CITY DIV

Personal Author(s) : Heckman, R. V.

PDF Url : ADA305156

Report Date : JUN 1980

Pagination or Media Count : 41

Abstract : A theoretical treatment of the eddy current problem involving a two-layered conductor laminate is presented for a rectangular cross section coil, with experimental eddy current measurements indicating that a frequency of 1.5 MHz should be used to measure a 6.45 um aluminum conductor, a 0.5 MHz frequency should be used to measure a 50.8 um aluminum conductor, and a frequency of 30 MHz should be used to measure lift-off. The schematic and the basic design of a two-frequency microprocessor controlled eddy current system is also presented. (AN)

Descriptors :   *LAMINATES, *ELECTRIC CONDUCTORS, *EDDY CURRENTS, MATHEMATICAL MODELS, NONDESTRUCTIVE TESTING, MICROPROCESSORS, LAYERS, COMPOSITE MATERIALS, CURRENT DENSITY, COMPOSITE STRUCTURES, ALUMINUM, SYNCHRONIZATION(ELECTRONICS), ELECTRICAL RESISTANCE, GREENS FUNCTIONS, AMPLITUDE, ELECTRICAL MEASUREMENT, ELECTRIC COILS.

Subject Categories : Laminates and Composite Materials
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE