Time-frequency characteristics of flash produced by hypervelocity impact

Kai Zhang; Qing Ming Zhang; Ren Rong Long; Hao Zhe Liang; Yun Dan Gan; Jun Guo

doi:10.15918/j.tbit1001-0645.2016.Suppl.1.002

Time-frequency characteristics of flash produced by hypervelocity impact

Kai Zhang, Qing Ming Zhang^*, Ren Rong Long, Hao Zhe Liang, Yun Dan Gan, Jun Guo

^*Corresponding author for this work

School of Mechatronical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	5-8 and 13
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	36
DOIs	https://doi.org/10.15918/j.tbit1001-0645.2016.Suppl.1.002
Publication status	Published - 1 Jun 2016

Keywords

Hypervelocity impact
Optical pyrometer
Spectrum

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10.15918/j.tbit1001-0645.2016.Suppl.1.002

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title = "Time-frequency characteristics of flash produced by hypervelocity impact",

abstract = "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.",

keywords = "Hypervelocity impact, Optical pyrometer, Spectrum",

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AU - Zhang, Kai

AU - Zhang, Qing Ming

AU - Long, Ren Rong

AU - Liang, Hao Zhe

AU - Gan, Yun Dan

AU - Guo, Jun

PY - 2016/6/1

Y1 - 2016/6/1

N2 - 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.

AB - 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.

KW - Hypervelocity impact

KW - Optical pyrometer

KW - Spectrum

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JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

ER -

Time-frequency characteristics of flash produced by hypervelocity impact

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Keywords

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