Ms. Xiuying Gu Profile

Xiuying Gu

at Changchun Univ of Science and Technology

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Author

Publications (3)

Proceedings Article | 18 December 2014 Paper

Theoretical simulation of melt ejection during the laser drilling process on aluminum alloy by single pulsed laser

Mingxin Li, Guangyong Jin, Ming Guo, Di Wang, Xiuying Gu

Proceedings Volume 9295, 92950Q (2014) https://doi.org/10.1117/12.2072886

KEYWORDS: Aluminum, Optical simulations, Interfaces, Pulsed laser operation, Laser drilling, Laser processing, Data modeling, Liquids, Thermal modeling, Data centers

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Proceedings Article | 18 December 2014 Paper

Temperature and thermal stress fields during the pulse train of long-pulse laser irradiating aluminium alloy plate

Wei Zhang, Guangyong Jin, Xiu-ying Gu

Proceedings Volume 9295, 92950K (2014) https://doi.org/10.1117/12.2072857

KEYWORDS: Aluminum, Pulsed laser operation, Laser applications, Laser irradiation, Finite element methods, Laser energy, Metals, Thermal modeling, Diffusion, Absorption

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Proceedings Article | 18 December 2014 Paper

Numerical analysis of thermal effect in aluminum alloy by monopulse laser

Xiuying Gu, Guibo Chen, Guangyong Jin, Wei Zhang, Mingxin Li

Proceedings Volume 9295, 92950N (2014) https://doi.org/10.1117/12.2072868

KEYWORDS: Aluminum, Pulsed laser operation, Absorption, Temperature metrology, Thermal effects, Numerical simulations, Laser energy, Numerical analysis, Finite element methods, Laser processing

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A spatial axisymmetric finite element model is established to investigate the distribution characteristics of temperature field that monopulse millisecond laser act on aluminum alloy. The thermal process of laser acting on aluminum alloy (melting, gasification and temperature drop) is simulated. Using the specific quivalent heat capacity method to simulate the solid-liquid, liquid-gas phase transition of aluminum alloy, and considering the differences of thermal physical parameters between different states (solid-liquid, liquid-gas) of aluminum alloy in the process of numerical simulation. The distribution of temperature field of aluminum alloy caused by the change of energy density, pulse width and spot radius of monopulse millisecond laser are investigated systematically by using numerical simulation model. The numerical results show that the temperature of target no longer rises after reaching the target gasification. Given the pulse width and spot radius, the temperature of target rise as the energy density increases, the laser intensity distribution is gaussian, so the temperature distribution of the target surface also shows Gaussian. The energy absorption mechanism of aluminum alloy is surface absorption mechanism, the temperature gradient in axial of the target is much lager than the temperature gradient in radial of the target surface, so the temperature rise in axial only exists a thin layer of target surface. Given the energy density and spot radius, as the pulse width increases, the power density of laser decreases, therefore the temperature of target center point decreases as the pulse width increases, and the temperature difference becomes small. As the pulse width decreases, the heat transfer in axial reduce, the deposition of energy enhances on the surface. Given the energy density and pulse width, the distribution of the temperature is enlarged as the spot radius increases, but the distribution of the temperature in axial is independent of the spot radius.

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