超高速碰撞闪光强度与碰撞角度关系
Relationship between impact flash intensity and impact angle during hypervelocity impact
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摘要: 为了测量超高速碰撞过程中产生的闪光现象，进而研究相近碰撞速度、不同入射角度（弹道与靶板平面的夹角）条件下超高速碰撞产生闪光在整个物理过程的闪光强度随时间的变化规律，设计了适用于瞬态闪光测量的光学高温计测量系统。通过二级轻气炮加载LY12球形铝弹丸，运用设计的瞬态高温计测量系统分别进行了入射角度为30°，45°，60°和90°相近碰撞速度条件下碰撞LY12铝靶产生闪光现象的测量。获得了平均碰撞闪光强度峰值与碰撞角度的关系，平均碰撞闪光强度峰值随碰撞角度的减小而增大，碰撞角度为30°时表现更为明显。Abstract: To measure impact flash generated during hypervelocity impact and further investigate rules of impact flash intensity varying with time, which is generated by hypervelocity impact at close impact velocities and different incidence angles from target plane, a transient impact flash measurement pyrometer suitable for transient flash measurement is designed. LY12 aluminum spherical projectile is loaded by two stage light gas gun, using transient pyrometer measurement system designed measure impact flash phenomena, which was generated by LY12 aluminum projectile impacted the LY12 aluminum target at close impact velocity and different impact angles of 30°，45°，60° and 90°. The relationships between average impact flash intensity peaks and different impact angles are acquired. Average impac
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Key words:
- impact flash /
- hypervelocity impact /
- pyrometer /
- planck radiation
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