  On the search of lightweight lightning protection materials that can be used
as part of lightning protection systems, we investigate some types of
electroconductive fabrics by applying several lightning impulse currents in
laboratory. Samples of four commercially available electroconductive textiles
were analyzed, two rip-stop, a plain-weave, a nonwoven, and additionally a
carbon-impregnated polymeric film. Under laboratory conditions, each sample was
subjected to several lengthwise subsequent lightning-like currents of 8/20 us
standard waveform, recording both voltage and current signals. Optical and
scanning electron microscope observations were performed after tests, revealing
some patterns or morphological changes on the fabric surface. Despite these
changes, the investigated conductive textiles withstand the several lightning
impulse currents applied. Results suggest that some conductive fabrics could be
used in personal mobile shelters, to protect human beings against the earth
potential rise caused by a close lightning discharge.
