Accession Number:

AD0883123

Title:

Coatings for Lighting Protection of Structural Reinforced Plastics. Part 1

Descriptive Note:

Final rept. 15 May 1969-15 Nov 1970

Corporate Author:

BOEING CO RENTON WA COMMERCIAL AIRPLANE GROUP

Personal Author(s):

• Quinlivan, J. T.
• Kuo, C. J.
• Brick, R. O.

Report Date:

1971-03-01

Pagination or Media Count:

298.0

Abstract:

Coatings and coating systems were developed for protection of boron and graphite fiber reinforced plastic composites from structural damage by lightning strikes. The effectiveness of the protective capability of the proposed coating systems was tested with an artificial lightning stroke consisting of both high current and high coulomb components. The primary criterion of successful coating was the capability of a test panel to sustain a simulated lightning discharge without structural damage to the composite substrate. Numerous coatings or coating systems have been developed and evaluated. They can be classified into the following general categories continuous metal foils woven metal wire fabrics knitted metal wire mesh plasma and flame sprayed aluminum metal pigmented paints and nonmetallic pigmented paints and nonmetallic pigmented paints with or without undercoatings. Several coating systems show protective capability. Aluminum knitted wire mesh and aluminum woven wire fabric are considered to be the most promising coatings.

Descriptors:

• *LIGHTNING
• *AIRFRAMES
• *ELECTROMAGNETIC SHIELDING
• *REINFORCED PLASTICS
• SIMULATION
• THICKNESS
• FIBERS
• COMPOSITE MATERIALS
• LAMINATES
• PANELS
• ELECTRIC DISCHARGES
• SILVER
• EPOXY RESINS
• BORON
• FOILS(MATERIALS)
• NICKEL
• FILAMENTS
• BONDING
• AIRCRAFT CANOPIES
• PROTECTION
• GLASS TEXTILES
• PROTECTIVE TREATMENTS
• PLATING
• ELECTRIC ARCS
• ALUMINUM
• COPPER
• TEST METHODS
• CARBON FIBERS
• METAL COATINGS
• SUBSTRATES
• ELECTRICAL CONDUCTIVITY

Subject Categories:

• Coatings, Colorants and Finishes
• Plastics
• Safety Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE