Article
Chemistry, Analytical
Junyong Zeng, Wei Zhang, Ting Guo, Yan Lou, Wenqi Wang, Zhenyu Zhao, Chao Wang
Summary: This study investigates the mechanism and effect of dual-beam laser polishing on surface roughness reduction through experimental and simulation analysis. The results demonstrate that dual-beam laser processing efficiently reduces surface roughness and reveal the roles of capillary force and thermocapillary force in the polishing process.
Article
Optics
Jilin Xu, Ping Zou, Di Kang, Wenjie Wang, Anqi Wang
Summary: This paper investigates the formation mechanism of a new type of surface structure that has not been previously studied in laser polishing. The study presents the complete evolution of the surface profile and size parameters of the surface structure through laser polishing experiments and establishes a numerical model to further explore the formation mechanism. The contribution of multiple factors to the formation of the surface structure is analyzed and the simulated results agree well with the experimental results, enhancing the theory of laser polishing.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Jilin Xu, Ping Zou, Xue Wang, Anqi Wang, Lu Liu
Summary: Gas shielding is crucial in enhancing the quality of laser polishing. The processing effects of laser polishing with chamber and nozzle gas shielding were compared and analyzed. The influence of flow rate on the surface roughness of the polished workpiece was examined, and the optimal flow rate (Q = 5 L/min) was determined. Further research on nozzle gas shielding laser polishing explored the effects of laser power and scanning speed on surface roughness, demonstrating wider application prospects.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Physics, Applied
O. Politano, F. Baras
Summary: Thermocapillary convection was investigated in a nanoscale metallic system of pure Ni using molecular dynamics. The study focused on the influence of a heat flux on the liquid metal, which led to the development of counter-rotating convection cells due to the gradient of surface tension along the interface. Parameters such as Prandtl, Marangoni, and Peclet numbers were used to interpret the results and demonstrate the effects of laser power and system size on pool shape and flow characteristics.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Mechanical
Wenjie Wang, Ping Zou, Jilin Xu, Kornel F. Ehmann
Summary: This paper proposes an improved model to analyze the effects of ambient gas on the morphology evolution mechanisms of laser-polished surface. The model expands an existing laser polishing model by considering mass transfer, solutocapillary forces, and chemical reactions. By comparing the laser polishing in air and argon, the influences of velocity field, temperature field, concentration field, melt surface velocity, molten pool surface profile, and surface forces are studied. The contributions of chemical reaction heat, oxygen mass flux, mass transfer, and surface forces are also presented. Furthermore, the model is validated on 304 stainless steel by evaluating polished surface roughness, molten pool depth, and oxygen element distribution.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Ceramics
Tianqi Zhang, Wenxuan Ma, Weifeng Yao, Jinzhong Wu, Yan Zhang, Jinling Cong, Ling Shan, Jinlong Dong, Tianbiao Yu, Ji Zhao
Summary: This study presents a theoretical and experimental investigation on the generated surface profile of spiral toolpath in the axial ultrasonic vibration-assisted polishing process. A prediction calculation model is proposed based on the classical Preston equation, Hertzian contact theory, and the axial vibration-assisted processing principle. The model accurately predicts the surface profile shape and material removal rate, and reveals the assisted processing principle. Experimental results verify the rationality of the proposed model and demonstrate the superior polishing performance of the axial ultrasonic vibration-assisted polishing.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Debajyoti Bhaduri, Tina Ghara, Pavel Penchev, Soumitra Paul, Catalin Pruncu, Stefan Dimov, David Morgan
Summary: A novel LP strategy was proposed to improve the re-melting of aluminium alloys by introducing a thermally insulating ceramic baseplate, resulting in significant reductions in surface roughness and residual stresses. The study highlights the importance of controlling heat dissipation in laser polishing of thermally conductive materials to achieve desired surface integrity properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Optics
Jilin Xu, Ping Zou, Wenjie Wang, Di Kang
Summary: This paper presents a numerical model for investigating the melting and transition regimes of laser polishing, revealing the effects of surface forces, fluid velocity, and material removal on surface topography evolution, as well as analyzing the reasons for the formation of bulge structures and the impact of laser power. The model also attempts to predict surface roughness after laser polishing, with a maximum error of 14.9% compared to experimental results, indicating its potential for optimizing process parameters.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Industrial
Astrid Sassmannshausen, Andreas Brenner, Johannes Finger
Summary: Ultrafast pulse laser polishing can achieve fine surface polishing effects by reallocating material from peaks to valleys. Experiments on 1.2738 tool steel show that polishing can significantly reduce surface roughness, achieving a polishing rate of 12.15 cm(2)/min.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
Jinzhong Wu, Burhan Afzal, Zhilong Huang, Maoju Yang, Shuaishuai Sun
Summary: This study proposes a novel high-efficiency non-damage magnetorheological chemical polishing (MCP) process for high-quality and high-efficiency processing of gallium nitride (GaN) crystals. The effects of MCP fluid composition and key processing parameters on GaN crystal surface roughness and material removal rate (MRR) were explored experimentally. Results showed that a compound abrasive with silica fluid exhibited better polishing effects and the addition of NaOH solid particles improved the polishing efficiency. The MCP process achieved non-damage polishing of GaN crystals, improving the surface roughness from Ra 115 nm to Ra 0.375 nm after 4 hours of polishing. A prediction model for GaN crystal surface roughness in the MCP process was constructed with an overall difference of 11.6% between actual and predicted values.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Chemistry, Physical
Jiantao Zhou, Xu Han, Hui Li, Sheng Liu, Shengnan Shen, Xin Zhou, Dongqi Zhang
Summary: The study investigates the impact of laser polishing on the surface quality of AlSi10Mg material, showing significant reduction in surface roughness and improvement in microhardness. Better surface quality can be achieved by adjusting the parameters of laser polishing.
Article
Chemistry, Multidisciplinary
Mantas Gaidys, Andrius Zemaitis, Paulius Gecys, Mindaugas Gedvilas
Summary: The use of laser irradiation for micromachining is versatile and advantageous, allowing for both milling and polishing of samples using the same laser system. State-of-the-art laser systems with high optical power and burst regimes are widely used in technology. The study investigates the influence of MHz burst, GHz burst, and bibursts on significant surface polishing of copper and stainless-steel samples, using Z-scan experiments to determine the optimal number of sub-pulses for the lowest surface roughness.
Article
Materials Science, Coatings & Films
Andrea El Hassanin, Muhannad Ahmed Obeidi, Fabio Scherillo, Dermot Brabazon
Summary: This study explored the possibility of using a CO2 laser for surface polishing of metal Additively Manufactured parts made by Laser-based Powder Bed Fusion. The experiments conducted on vertically built samples showed a significant reduction in surface roughness and an increase in hardness due to changes in microstructure.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Optics
Shi-Wei Liu, Hong-Xiang Wang, Qing-Hua Zhang, Jing Hou, Xian-Hua Chen, Qiao Xu, Chu Wang
Summary: A novel conformal vibration polishing (CVP) method is proposed by combining the conformal polishing method with short stroke vibration, showing high material removal rate and smoothing characteristics. A quantitative time-domain smoothing model and a convergence factor (CFC) are presented based on the research of smoothing characteristics, providing a theoretical foundation for parameter selection and process optimization of the CVP method. The experimental results demonstrated good agreement with the theoretical predictions, supporting the efficiency and effectiveness of the proposed CVP method.
Article
Materials Science, Multidisciplinary
Huan Chen, Chaoyang Wei, Zhen Cao, Xiaocong Peng, Zhigang Jiang, Jianda Shao
Summary: In this paper, a femtosecond laser selective polishing technique was proposed to reduce surface roughness and improve polishing efficiency of reaction-bonded silicon carbide (RB-SiC). The experiment showed that selective polishing effectively removed the Si layer without changing the surface structure of SiC, leading to improved surface roughness.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Engineering, Manufacturing
Sinan Kesriklioglu, Justin D. Morrow, Frank E. Pfefferkorn
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2018)
Article
Thermodynamics
Sinan Kesriklioglu, Frank E. Pfefferkorn
JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS
(2019)
Article
Materials Science, Multidisciplinary
B. Richter, N. Blanke, C. Werner, F. Vollertsen, F. E. Pfefferkorn
Article
Engineering, Industrial
Brodan Richter, Nena Blanke, Christian Werner, Niranjan D. Parab, Tao Sun, Frank Vollertsen, Frank E. Pfefferkorn
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2019)
Article
Engineering, Manufacturing
Sinan Kesriklioglu, Cory Arthur, Justin D. Morrow, Frank E. Pfefferkorn
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2019)
Article
Engineering, Manufacturing
Lan Chen, Brodan Richter, Xinzhou Zhang, Xudong Ren, Frank E. Pfefferkorn
ADDITIVE MANUFACTURING
(2020)
Article
Engineering, Industrial
Marcus A. Jackson, Justin D. Morrow, Dan J. Thoma, Frank E. Pfefferkorn
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2020)
Article
Engineering, Manufacturing
Daniel Franke, Shiva Rudraraju, Michael Zinn, Frank E. Pfefferkorn
JOURNAL OF MANUFACTURING PROCESSES
(2020)
Article
Engineering, Manufacturing
Shixuan Chen, Brodan Richter, Kumar Sridharan, Frank E. Pfefferkorn, Melih Eriten
JOURNAL OF MANUFACTURING PROCESSES
(2020)
Article
Engineering, Manufacturing
Marcus A. Jackson, Aaron Kim, Jacob A. Manders, Dan J. Thoma, Frank E. Pfefferkorn
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Hwasung Yeom, Tyler Dabney, Nicholas Pocquette, Kenneth Ross, Frank E. Pfefferkorn, Kumar Sridharan
JOURNAL OF NUCLEAR MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Lan Chen, Brodan Richter, Xinzhou Zhang, Kaila B. Bertsch, Dan J. Thoma, Frank E. Pfefferkorn
Summary: The study demonstrates that laser polishing can significantly improve the surface roughness of as-built 316L stainless steel and induce changes in the microstructure. After laser polishing, the sub-surface hardness, tensile strength, and ductility of 316L are all increased.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Manufacturing
Shixuan Chen, Brodan Richter, Kumar Sridharan, Frank E. Pfefferkorn, Melih Eriten
JOURNAL OF MANUFACTURING PROCESSES
(2020)
Article
Engineering, Manufacturing
Behzad Rankouhi, Ankur Kumar Agrawal, Frank E. Pfefferkorn, Dan J. Thoma
Summary: New dimensionless numbers have been introduced in this study to estimate suitable selective laser melting process parameters without extensive modeling or experimentation. The universality of these numbers has been verified by applying them to data from different metals and alloy systems.
MANUFACTURING LETTERS
(2021)
Article
Engineering, Manufacturing
Brodan Richter, Frank E. Pfefferkorn
JOURNAL OF MICRO AND NANO-MANUFACTURING
(2019)