Time-frequency characteristics of flash produced by hypervelocity impact

被引：0

作者：

Zhang K. ^{[1
]}

Zhang Q.-M. ^{[1
]}

Long R.-R. ^{[1
]}

Liang H.-Z. ^{[1
]}

Gan Y.-D. ^{[1
]}

Guo J. ^{[1
]}

机构：

[1] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing

来源：

Zhang, Qing-Ming (qmzhang@bit.edu.cn) | 1600年 / Beijing Institute of Technology卷 / 36期

关键词：

Hypervelocity impact; Optical pyrometer; Spectrum;

D O I：

10.15918/j.tbit1001-0645.2016.Suppl.1.002

中图分类号：

学科分类号：

摘要：

It is a universal phenomenon of flash produced in hypervelocity impact. In order to investigate time-frequency characteristic of flash produced by hypervelocity impact, multi-channel spectral measurement system and optical pyrometer system were set up. Spectra at wavelength range 200~1100 nm were measured in experiment. Through the NIST atomic emission spectral database, the spectral lines were identified. The spectral lines ALI 394.40 nm and 396.15 nm were analyzed. By comparing spectra under different impact velocities, the relationship between impact velocity and light intensity was formulated. Combined with the time variation of light intensity measured by optical pyrometer, the characteristics of flash were analyzed. © 2016, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.

引用

页码：5 / 8and13

页数：808

共 8 条

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