摘要
本論文使用時域有限差分法(FDTD)研究雷擊電磁脈衝波下車輛內的電場耦合與遮蔽效應，並研究車輛內坐姿人體所感應的電流與最大電流密度，頻率範圍從10 MHz至50 MHz。從模擬結果發現雷擊電磁脈衝波下耦合電場在車輛內的遮蔽效應約為72.5 %，而增加擋風玻璃與窗戶玻璃材質的導電率可以有效提高車內的遮蔽效應。發現入射雷擊電磁脈衝波會因車體結構而在車內產生多次反射。從模擬結果發現車內人體所感應的電流會隨著頻率10 MHz至50 MHz而增加。在50 MHz時車內不同位置人體所感應的最大電流密度約為0.01~0.8 A/cm2，其值遠高於穩態(Steady-State)下的臨界值1微A/cm2，這有可能會對人體健康產生影響。然而，車輛內不同位置人體全身所感應的特定吸收量(Specific Absorption)小於1992年ANSIC/IEEE C95.1-1992制定的人體曝露於脈衝電磁場下全身之特定吸收量28.8 J/kg。
參考文獻
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