Volume 31 No. 5
Nov.  2017
Article Contents


Optical Properties of K9 Glass under Shock Loading

  • Corresponding author: WANG Xiang, xiangwang102@126.com
  • Received Date: 2016-10-10
    Accepted Date: 2017-02-18
  • K9 glass is often used to study the generation mechanism of failure wave and the dynamic fracture property of brittle materials under impact loading.However, the research on the optical property of K9 glass is often ignored due to the impact pressure limit.In this work, through the plane impact experiment combining the Doppler pin system (DPS) with the laser wave length of 1 550 nm, the velocity history of different optical testing interfaces during the spread process of the shock wave was obtained.Based on an analysis of the temporal correspondence between the original interference signal and the interface velocity profile, the pressure range within which the K9 glass maintains impact transparence and elastic response was achieved.The results show that when the impact pressure is less than 8.0 GPa the K9 glass can maintain good transparent property, and its dynamic refractivity changes linearly with the density.
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