The Effects of High Intensity Electrical Currents on Advanced Composite Materials
Abstract
The objective of this program was to perform a research study to investigate high intensity electric current flow of such magnitude and waveform as might result from lightning strikes, and to characterize the resulting degradation in advanced composites and to investigate means of providing internal protection from such damage. The approach followed in the program essentially involved the selection of representative high modulus boron and graphite filaments (epoxy reinforced) composites and the exposure of those composites to precisely controlled electrical current flow. Necessary electrical, physical, chemical, microstructure, and mechanical analyses and tests were performed to permit modeling of electrical current flow processes and damage mechanisms. The laboratory analyses and tests performed included photomicrographic analysis, electron microprobe, scanning electron microscope, X-ray diffraction, tensile tests, and physical property measurements. The electrical properties measured included resistivity, dielectric strength, and impedance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 1972
- Accession Number
- AD0740822
Entities
People
- A. P. Penton
- Jillian L. Perry
- K. J. Lloyd