Abstract
In this paper, the safety for passengers of composite car-body against lightning strikes was analyzed by the application of an impulse generator which can produce impulse current up to 50 kA with 8/<TEX>$20{\mu}s$</TEX> waveform. Potential difference on inside surface of the car-body was measured as a safety parameter for the passengers against lightning strikes. The potential difference between 20 em distant was 175 V at 37.67 kA, and it corresponds to 875 V between 1 m distant. The amount of charge flowing a passenger at 100 kA impulse current can be estimated to <TEX>$0.31\;mA{\cdot}s$</TEX>. This is much less than the limit amount of charge for human body, <TEX>$30\;mA{\cdot}s$</TEX> which is presented by Koeppen and Osypka.
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