Dr. Jinhe Liu Profile

Dr. Jinhe Liu

at Northwestern Polytechnical Univ

SPIE Involvement:

Author

Publications (14)

Proceedings Article | 19 May 2006 Paper

Primary research on image of plasma in CO₂ laser welding with high-speed photography

Jinhe Liu, Licai Ma, Yaozheng Xie, Yong Zhang

Proceedings Volume 6150, 615016 (2006) https://doi.org/10.1117/12.676730

KEYWORDS: Plasma, High speed photography, Laser welding, Gas lasers, Electrons, Carbon monoxide, Image analysis, Helium, Metals, Carbon dioxide lasers

Read Abstract +

Proceedings Article | 13 January 2005 Paper

Three-dimension reconstruction research of plasma during laser welding

Jinhe Liu, Danggang Lei, Licai Ma, Fusheng Zhang

Proceedings Volume 5629, (2005) https://doi.org/10.1117/12.577888

KEYWORDS: Plasma, Laser welding, Cavitation, 3D image reconstruction, Image fusion, Laser processing, Ionization, Atmospheric plasma, Computer graphics, Image processing

Read Abstract +

Proceedings Article | 13 January 2005 Paper

Study on three-dimension synchrony high-speed photography of plasma during CO2 laser welding

Jinhe Liu, Fusheng Zhang, Licai Ma, Danggang Lei

Proceedings Volume 5629, (2005) https://doi.org/10.1117/12.577886

KEYWORDS: Plasma, Laser welding, High speed photography, Electrons, Gas lasers, Photography, Carbon monoxide, Laser stabilization, Optical fibers, Laser processing

Read Abstract +

Proceedings Article | 13 January 2005 Paper

Effect of activating flux on plasma during CO2 laser welding

Jinhe Liu, Licai Ma, Fusheng Zhang, Danggang Lei

Proceedings Volume 5629, (2005) https://doi.org/10.1117/12.577884

KEYWORDS: Plasma, Laser welding, Electrons, Gas lasers, High speed photography, Refraction, Molecules, Carbon monoxide, Absorption, Carbon dioxide lasers

Read Abstract +

Proceedings Article | 10 October 2000 Paper

Analysis of the effect on electron density along the laser path by adding magnetic field in laser beam welding

Jinhe Liu, Wanqian Hu, Yuzhe Liu, Yu Liu

Proceedings Volume 4222, (2000) https://doi.org/10.1117/12.403881

KEYWORDS: Magnetism, Plasma, Laser welding, Carbon dioxide lasers, Metals, Reflection, Absorption, Mirrors, Ions, Ionization

Read Abstract +

Proceedings Article | 10 October 2000 Paper

Computer platform for the analysis of the process of laser welding

Jinhe Liu, Yuzhe Liu, Yu Liu

Proceedings Volume 4222, (2000) https://doi.org/10.1117/12.403882

KEYWORDS: Plasma, Laser welding, Laser processing, RGB color model, Analytical research, Image processing, Photography, Metals, Solids, Gas lasers

Read Abstract +

Proceedings Article | 8 September 1999 Paper

Determining isothermal line of laser-welding plasma by computerizing RGB tricolor method

Jinhe Liu, Decai Yang, Kaijing Lu, Wanqian Hu

Proceedings Volume 3862, (1999) https://doi.org/10.1117/12.361112

KEYWORDS: Plasma, RGB color model, Laser welding, Temperature metrology, Argon, Helium, Visible radiation, Black bodies, Light sources, Laser scanners

Read Abstract +

Proceedings Article | 8 September 1999 Paper

Measuring the high-power CO2 laser space parameter by use of computer processing organic-glass burning mark

Jinhe Liu, Shujuan Gao, Wanqian Hu, Xianhong Hu

Proceedings Volume 3862, (1999) https://doi.org/10.1117/12.361184

KEYWORDS: High power lasers, Carbon dioxide lasers, Error analysis, Transmission electron microscopy, Combustion, Laser beam propagation, Modes of laser operation, Laser processing, Analytical research, 3D metrology

Read Abstract +

Proceedings Article | 15 August 1998 Paper

Measurement of TEM of high-power CO2 laser beam by computer processing organic-glass burning mark

Jinhe Liu, Fengming Zhang

Proceedings Volume 3550, (1998) https://doi.org/10.1117/12.317930

KEYWORDS: Transmission electron microscopy, High power lasers, Carbon dioxide lasers, 3D displays, Combustion, Laser processing, 3D image processing, Scanners, Laser energy, Resonators

Read Abstract +

Proceedings Article | 15 August 1998 Paper

Design and study on weld protection drag cover as welding Ti6A14V by CO2 laser

Jinhe Liu, Jing Chen

Proceedings Volume 3550, (1998) https://doi.org/10.1117/12.317916

KEYWORDS: Oxygen, Nitrogen, Titanium, Hydrogen, Carbon dioxide lasers, Argon, Laser welding, Contamination, Metals, High power lasers

Read Abstract +

Proceedings Article | 15 August 1998 Paper

Analysis on the variation of Ar and He plasma refractive index with temperature in CO2 laser beam welding

Jinhe Liu, Fengming Zhang, Decai Yang

Proceedings Volume 3550, (1998) https://doi.org/10.1117/12.317913

KEYWORDS: Plasma, Refractive index, Argon, Carbon dioxide lasers, Chemical species, Ionization, Neon, Ions, Superposition, Laser welding

Read Abstract +

Proceedings Article | 15 August 1998 Paper

Establishment and analysis of new heat-transfer model on high-power CO2 laser beam welding

Jinhe Liu, Fengming Zhang

Proceedings Volume 3550, (1998) https://doi.org/10.1117/12.317909

KEYWORDS: High power lasers, Thermal effects, Laser welding, Plasma, Carbon dioxide lasers, Helium, Metals, Mathematical modeling, Thermal modeling, Carbon monoxide

Read Abstract +