Surface morphology and defect characterization during high-power fiber laser cutting of SiC particles reinforced aluminum metal matrix composite

Li, Maojun; Han, Haobo; Jiang, Xiaoqing; Zhang, Xiaodong; Chen, Yajie

doi:10.1016/j.optlastec.2022.108419

Cited by 10 publications

(4 citation statements)

References 31 publications

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“…According to Formulas (6), (9), and (10), it can be seen that the measurement value of the sensor ignores the influence of the rotation angle and the driving force, and the restoring force ignores the high-order term of the Taylor expansion. The actuator has external environmental interference and some inevitable modeling errors.…”

Section: Mixed Sensitivity Robust Controller Designmentioning

confidence: 99%

“…Traditional laser cutting technology cannot meet the required cutting quality and efficiency. Therefore, improving laser cutting quality [6,7] and cutting efficiency [8] has become one of the hot spots of research and concern for scholars in related fields [9,10]. Elsheikh A. et al conducted cutting experiments on CO 2 laser cutting of PMMA sheets, analyzed the factors affecting the kerf geometry, and used a genetic algorithm to select the optimal cutting parameters.…”

Section: Introductionmentioning

confidence: 99%

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Improvement in Position Response of Laser Focus Controlled Magnetic Actuator Based on Mixed Sensitivity Robust Control

Tong

Yang

et al. 2022

Actuators

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The relative position between the laser beam and the nozzle is controlled by laser-focus-controlled magnetic actuators to achieve non-coaxial laser cutting and improve laser cutting efficiency. In this paper, a 3-DOF (degrees of freedom) magnetic actuator is designed to solve the inconsistency of the laser beam focus and the nozzle focus in off-axis laser cutting. A mixed sensitivity robust controller is designed, and its simulation analysis and experimental research are carried out. First, the kinetic mathematical equations are established according to the structure of the actuator. Then, a mixed sensitivity robust controller is designed and analyzed using MATLAB/Simulink. The control performance is simulated and analyzed under 20% parameter variation and pulse disturbance with an uncertain mathematical model and external disturbance, respectively. Finally, the experimental study of the step response of the actuator is carried out. The experimental results show that the step response of the actuator in the Y, X, and θ directions can quickly reach the steady-state value. Furthermore, the steady-state error in the X is 1.6%; the steady-state error in the Y is 0.39%; the steady-state error in the θ is 0.45%. Their errors are all less than 0.025 mm, so they meet the position performance requirements. It can provide technical support for laser off-axis cutting.

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Section: Mixed Sensitivity Robust Controller Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement in Position Response of Laser Focus Controlled Magnetic Actuator Based on Mixed Sensitivity Robust Control

Tong

Yang

et al. 2022

Actuators

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“…The requirements for cutting fast reactor fuel rods include achieving minimal kerf width to maximize fuel recovery, minimizing slag deposition on cut surfaces, and ensuring smoothness for e cient transportation of short segments [19,[25][26][27][28][29] . These challenges underscore the importance of laser cutting processes, which involve intricate interactions among material properties, laser beam characteristics, and cutting auxiliary gases [30][31][32] . Parameters such as material type, thickness, surface condition, laser mode, power, cutting speed, assist gas type, pressure, focal position, and nozzle dimensions signi cantly impact cutting quality [33][34][35] .…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Laser Cutting Process of Simulated Fast Reactor Fuel Rods

Li,

Mo,

Chen

et al. 2024

Preprint

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The cladding of fast reactor fuel rod is fabricated using stainless steel, which, owing to its ductility, presents challenges such as increased tool wear and diminished cut quality when mechanically sheared. In light of technological advancements, laser cutting has emerged as a superior method due to its flexibility and high efficiency. The quality of laser-cut fuel rod significantly influences subsequent processing of short segments. This study systematically analyzes the impact of various laser cutting parameters on the cutting quality of simulated fast reactor fuel rod. Optimization of cutting speed, focal position, power, and gas pressure has substantially improved cutting effectiveness. Experimental findings indicate that a combination of 1 m/min cutting speed, focal position ranging from − 20 mm to -25 mm, power between 7200 W and 9600 W, and 10 MPa gas pressure achieves the optimal balance between efficiency and quality, providing crucial insights for the efficient cutting of fast reactor fuel rod.

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“…The focused high-energy laser beam acts on the local region of the alloy with an energy value of more than 10 6 T/cm 2 . In addition, the absorption rate of magnesia-based silicon carbide composite material with a long-wavelength laser is up to 80% [ 11 , 12 , 13 , 14 , 15 ], which can cause the material to melt and evaporate the instantly and achieve efficient processing. Because the focus spot is small, the heat-affected zone is small, which can meet the requirements of precision machining.…”

Section: Introductionmentioning

confidence: 99%

Mechanism Analysis of Nanosecond Pulse Laser Etching of SiCp/Mg Composites

Song

Zhang

et al. 2022

Materials

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Due to the introduction of silicon carbide reinforcement, the physical and cutting properties of SiCp/Mg composites are very different from those of metal composites. Nanosecond pulse laser processing is more efficient than traditional processing for SiCp/Mg composites. A low-power pulsed fiber laser was used to etch 3.0 mm thick SiCp/Mg composites. The effect of low laser power (0~50 W) on the morphology and heat-affected zone of the SiCp/Mg composite after etching was studied. The results show that when the laser power increases, the material accumulation at the ablation end of the machining surface becomes more and more serious. With the increase in power, the differences in ablation width and ablation depth on the surface of composite materials do not increase proportionally. When the laser power increases gradually, the width of the heat-affected zone increases in the direction of the perpendicular laser beam and reaches the maximum value at the etched end.

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Surface morphology and defect characterization during high-power fiber laser cutting of SiC particles reinforced aluminum metal matrix composite

Cited by 10 publications

References 31 publications

Improvement in Position Response of Laser Focus Controlled Magnetic Actuator Based on Mixed Sensitivity Robust Control

Improvement in Position Response of Laser Focus Controlled Magnetic Actuator Based on Mixed Sensitivity Robust Control

Experimental Study on Laser Cutting Process of Simulated Fast Reactor Fuel Rods

Mechanism Analysis of Nanosecond Pulse Laser Etching of SiCp/Mg Composites

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