プリント基板上の下方燃え拡がりに関する実験的検討：

試料側面と試料ホルダーの間隙距離が燃え拡がり速度と限界酸素濃度に及ぼす影響

抄録

The effect of the sample holding method on the flame spread phenomena of printed circuit boards was investigated. To realize the two-dimensional flame spread front over the printed circuit board, we provided the air gap between the side edge of the sample and sample holder wall. The air gap can reduce the heat loss from the sample to the holder, however edge propagation started to appear when the size of the air gap increased excessively. To find an optimal size of the air gap, flame front shape, flame spread rate, and limiting oxygen concentration were measured by changing the size of the air gap and those results are reported in the presetnation.