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Effect of lightning strike on bromine intercalated graphite fiber/epoxy compositesLaminar composites were fabricated from pristine and bromine intercalated pitch based graphite fibers. It was found that laminar composites could be fabricated using either pristine or intercalated graphite fibers using standard fabrication techniques. The intercalated graphite fiber composites had electrical properties which were markedly improved over both the corresponding pitch based and polyacrylonitrile (PAN) based composites. Despite composites resistivities more than an order of magnitude lower for pitch based fiber composites, the lightning strike resistance was poorer than that of the Pan based fiber composites. This leads to the conclusion that the mechanical properties of the pitch fibers are more important than electrical or thermal properties in determining the lightning strike resistance. Based on indicated lightning strike tolerance for high elongation to failure materials, the use of vapor grown, rather than pitch based graphite fibers appears promising.
Document ID
19910022863
Document Type
Technical Memorandum (TM)
Authors
Gaier, James R. (NASA Lewis Research Center Cleveland, OH., United States)
Slabe, Melissa E. (Cleveland State Univ. OH., United States)
Brink, Norman O. (Rohr Industries, Inc., Chula Vista CA., United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1991
Subject Category
COMPOSITE MATERIALS
Report/Patent Number
NAS 1.15:104507
NASA-TM-104507
E-6370
Funding Number(s)
PROJECT: RTOP 506-41-41
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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NameType 19910022863.pdf STI