The Rayleigh–Taylor instability in metal is of great practical interest to a diverse range of fields, and it is significantly different from the traditional fluid interface instability. In this paper, a set of high explosives driven Rayleigh–Taylor instability experiments in copper plate are presented for intensively understanding the perturbation growth behavior of metal interface instability. The perturbation growth history on copper interface at a specific time is recorded by flash radiography. The experimental results show that the evolution of interface perturbation is sensitive to its initial perturbation characters under a given driving pressure, the larger the initial perturbation amplitude, the faster the perturbation grows, but the perturbation wavelength of the interface remains almost unchanged at the explosive loading. The perturbation on the front interface will influence the interface features of the back free interface over time. Namely, the position corresponding to the perturbation trough on the front interface gradually evolves into a peak and vice versa.

金属中的瑞利-泰勒不稳定性对各种领域都具有重要的实际意义，它与传统的流体界面不稳定性有显着不同。在本文中，提出了一组高爆炸药驱动的铜板瑞利-泰勒不稳定性实验，以深入了解金属界面不稳定性的扰动增长行为。通过闪光射线照相记录特定时间铜界面上的扰动生长历史。实验结果表明，在给定的驱动压力下，界面扰动的演化对其初始扰动特征敏感，初始扰动幅度越大，扰动增长越快，但在爆炸载荷下界面的扰动波长几乎保持不变。 . 前界面的扰动会随着时间的推移影响后自由界面的界面特征。即前界面扰动波谷对应的位置逐渐演化为波峰，反之亦然。