Effects of lightning current waveform components on graphite/epoxy composite material

Conference · Sun Jan 01 04:00:00 EST 1978 · Sci. Adv. Mater. Process Eng. Proc.; (United States)

OSTI ID:6943688

Schulte, E H

This paper deals principally with lightning current waveform related damage of unprotected multi-ply graphite/epoxy (Gr/Ep) composite materials. The lightning test waveform was broken into component parts, which were applied individually and in various combinations to the test panels, to observe differences in damage resulting from the different test conditions. Preliminary results indicate that testing of the material with the complete waveform may cause more damage than when the various waveform components were applied one at a time to one location. In a related experiment, a 9-ply unprotected Gr/Ep panel was punctured by the high-peak current component of the lightning strike but not by the intermediate and continuing currents. In contrast, an aluminum panel will not be punctured by the high-peak current but the continuing current will cause burn through or rear surface melting.

• Research Organization: McDonnell Aircraft Co., St. Louis, MO
• OSTI ID: 6943688
• Report Number(s): CONF-780502-
• Conference Information: Journal Name: Sci. Adv. Mater. Process Eng. Proc.; (United States) Journal Volume: 23
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360304* -- Composite Materials-- Physical Properties-- (-1987)
AIRCRAFT
CARBON
COMPOSITE MATERIALS
DAMAGE
ELECTRIC DISCHARGES
ELECTRICAL PROPERTIES
ELEMENTAL MINERALS
ELEMENTS
EPOXIDES
GRAPHITE
LIGHTNING
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
WAVE FORMS