Simulation of Thermal Effect in Repetitive Pulsed Laser Irradiation on Metals

Peng, 胡鹏 Hu; Faliang, 陈发良 Chen

doi:10.3788/cjl201643.1001006

Cited by 1 publication

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorptivity of target to laser is an important parameter, and the deposition rate of laser energy is determined by the absorptivity. The absorptivity of the clean aluminum plate to 1064nm laser is shown by formula (6) and the change of the absorptivity with temperature described by formula ( 6) is shown in Fig. 1.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Continuous laser will make the surface temperature of material continuously rise with the increase of irradiation time, and reach the maximum temperature at the end of irradiation. Pulse laser due to the high peak power and high energy coupling efficiency, the surface temperature of the material rises rapidly during the irradiation period of the pulse laser, but the surface temperature drops rapidly during the pulse interval time [6] . In order to improve the quality and energy utilization of laser processing, the change of temperature field of aluminum metal by laser is studied to provide basis for laser processing.…”

Section: Introductionmentioning

confidence: 99%

“…The temporal and spatial distribution of temperature field and stress field between the metal plate and the intermittent metal substrate during the action of pulsed laser irradiation is studied by finite element method [13] . The characteristics of surface temperature rise and the change of ablation depth of metal materials before and after repeated frequency pulse laser irradiation are studied [6] . The ablation effect of millisecond pulse laser on aluminum alloy plate is studied by combining experimental measurement and numerical simulation [14] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of perforation effect between long pulse and continuous laser irradiation on aluminum alloy plates

Xia,

Yang,

Wang

et al. 2023

Eighteenth National Conference on Laser Technology and Optoelectronics

View full text Add to dashboard Cite

In order to explore the impact of different laser systems on the perforation capacity of aluminum alloy plates, a combination of numerical simulation and experimental methods is used under the same average power condition. The distributions of temperature field and molten pool of aluminum alloy plates irradiated by long pulse and continuous laser are obtained. The results show that under the irradiation of continuous laser, a stable temperature field will be formed on the surface of the target, and the perforation time will be longer; Under the irradiation of pulse laser, the surface temperature of the target rapidly increases, resulting in a shorter perforation time. Further analysis shows that under the action of continuous laser, the surface heat of targets has sufficient time to diffuse to the surrounding areas through thermal conduction and convective heat transfer, reducing the energy utilization.

show abstract

Section: Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%