Measurement of the Electrical Properties of Composite Materials in the Frequency Range of DC to 30 MHz

Work reported here is an extension of work reported in RADC-TR-78-156. A much higher conductivity for boron/epoxy is reported using better contacting techniques. For graphite/epoxy: coupled circuit theory is used to relate the conductivity to the measured resistance of a sample; the effect of absorb...

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Bibliographic Details
Main Author: Gajda,W J
Format: Report
Language:English
Subjects:
BORON
CHARGE COUPLED DEVICES
COMPOSITE MATERIALS
Coupled circuit theory
ELECTRICAL CONDUCTIVITY
ELECTRICAL PROPERTIES
Electricity and Magnetism
ELECTROMAGNETIC COMPATIBILITY
EPOXY COMPOUNDS
EPOXY LAMINATES
EPOXY RESINS
FREQUENCY BANDS
GRAPHITE
Laminates and Composite Materials
MEASUREMENT
MOISTURE
PE62702F
Plastics
WURADC233803P3
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Summary:Work reported here is an extension of work reported in RADC-TR-78-156. A much higher conductivity for boron/epoxy is reported using better contacting techniques. For graphite/epoxy: coupled circuit theory is used to relate the conductivity to the measured resistance of a sample; the effect of absorbed moisture on the conductivity is reported; and the effective conductivity of a multiple laminate is reexamined. (Author) Prepared in cooperation with Notre Dame Univ., IN. See also Rept. no. RADC-TR-78-156, AD-A058 041.