The signal characteristics of light flash generated by hypervelocity impact natural dolomite plate

Article type: Research Article

Authors: Tang, Enling^{a; *} | Xu, Hongjie^a | Wang, Meng^a | Zhang, Qingming^b | Li, Zhiqiu^a | Xiang, Shenghai^a | Yang, Minghai^a

Affiliations: [a] School of Equipment Engineering, Shenyang Ligong University, Shenyang, Liaoning, China | [b] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, China

Correspondence: [*] Corresponding author: Enling Tang, School of Equipment Engineering, Shenyang Ligong University, Shenyang 110159, Liaoning, China. Tel.: +86 1389 8809 790; E-mail: [email protected]

Abstract: To investigate light flash produced during hypervelocity impact in the laboratory, we have conducted a series of experiments on a two-stage light gas gun at different impact velocities and the same impact angle. Light flash were acquired through optical fiber pyrometer measurement system during the whole physical process in hypervelocity impact, Experimental results showed that the maximum light flash intensity decreases with impact velocity increasing, and maximum light flash intensity should exist a critical impact velocity for polycarbonate projectile impacting natural dolomite plate, which may be between 2.52 km/s and 4.21 km/s at the wavelength of 550 nm–700 nm. In addition, the light flash intensity peak value was 0.4 ∼ 0.5 mW.cm^{-2}.nm^{-1} in the experimental conditions in the paper.

Keywords: Hypervelocity impacts, polycarbonate projectile, light flash, dolomite, pyrometer

DOI: 10.3233/JAE-131735

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 44, no. 1, pp. 51-58, 2014