汽车车灯内部结雾的热分析及应对措施

空气中的水蒸气遇冷会在车灯透镜罩内产生珠状凝结，从而严重影响汽车车灯的照明和外观。文中将热设计的概念引入到车灯设计中，对车灯内部结雾的凝结机理、影响因素等进行了分析。指出车灯材料、灯内流场、温度场和浓度场的分布是影响结雾的决定因素，并由此提出了应对措施，对车灯的优化设计具有指导意义。

Deformation behavior of explosive detonation in electroformed nickel liner of shaped charge with nano-sized grains

Nickel liner of shaped charge with nano-sized grains was prepared by electroforming technique and the ultra-highstrain-rate deformation was performed by explosive detonation.The as-electroformed and post-deformed microstructures of electroformed nickel liner of shaped charge were observed by optical metallography(OM),scanning electron microscopy(SEM) and transmission electron microscopy(TEM) and the orientation distribution of the grains was analyzed by electron backscattering pattern(EBSP) technique.Both melting phenomenon in the jet fragment and recovery and recrystallization in the slug after ultra-high-strain-rate deformation were observed.The research evidence shows that dynamic recovery and recrystallization play an important role in ultra-high-strain-rate deformation for electroformed nickel liner of shaped charge with nano-sized grain.

车灯内部结雾的热分析及应对措施

汽车车灯的结雾问题严重影响车灯质量、寿命和使用效能 ,在车灯设计中引入热设计的概念 ,对车灯内部结雾的凝结机理、影响因素等进行分析 ,指出车灯材料、灯内流场、温度场和浓度场的分布是影响结雾的决定因素 。