Article
Materials Science, Ceramics
Xitong Yu, Liping Jiang, Qiang Luan, Yukui Cai, Qinghua Song, Bing Wang, Zhanqiang Liu
Summary: This study presents a comprehensive investigation of femtosecond laser ablation of silicon nitride under different auxiliary processing environments. It is found that laser machining under low temperature could improve surface quality and significantly reduce thermal accumulation effect.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Yanjun Guo, Xiaojing Yang, Jie Kang, Maozhong Li, Qiming Xie, Jianguo Xiao, Wanqing Zhang
Summary: This study experimentally investigated the effect of spindle speed, feed speed, cutting depth, and laser pulse duty cycle on the surface roughness during laser-assisted machining of single crystal Si. The results showed a significant improvement in machinability, with spindle speed, feed speed, cutting depth, and pulse duty cycle contributing differently to surface roughness. Interaction between factors also played a significant role in influencing surface roughness.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Automation & Control Systems
Javier Dominguez-Caballero, Sabino Ayvar-Soberanis, Jin Kim, Anish Roy, Lin Li, David Curtis
Summary: This study proposes a hybrid laser- and ultrasonic-assisted machining (LUAM) technique to improve the machinability of Ti-6Al-4V alloy in a turning process. The results reveal that LUAM process demonstrates process improvement with wider range of cutting speeds and depths of cut.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Reza Abedinzadeh, Ehsan Norouzi, Davood Toghraie
Summary: This study investigated the laser-assisted machining (LAM) of aluminum nanocomposite reinforced with SiC-Al2O3 nanoparticles using the turning process. The factors of laser power, depth of cut, and cutting speed were optimized using the Taguchi method to achieve the smallest surface roughness and cutting force. Results showed that the depth of cut had the greatest influence on cutting force in LAM and conventional machining (CM) processes, while cutting speed and feed rate had the major effect on surface roughness in LAM and CM processes, respectively. LAM exhibited a 26% reduction in cutting force and a 51% decrease in surface roughness compared to CM process under optimal conditions.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Mohsen Khajehzadeh, Seyyed Sajjad Ahmadpoor, Omid Rohani Raftar, Mohammad Reza Beyki Sarveolia, Mohammad Reza Razfar
Summary: The study analyzed the effects of different parameters on cutting forces and surface roughness in HL-UEAM machining through experimental tests. The results showed that the simultaneous application of laser and ultrasonic elliptical vibrations is more effective in reducing cutting forces, but it may increase surface roughness.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Automation & Control Systems
Xiaosheng Luan, Jianbing Meng, BingQi Huang, Xiaojuan Dong, Yizhong Hu, Yugang Zhao, Hongwei Zhang, Linghui Qu
Summary: The processing technology of laser combined minimum quantity lubrication-assisted machining (LAM-MQL) significantly improves tool wear, chip shape, and surface quality of titanium alloy. Experimental results show a transformation of titanium alloy chip shape and a decrease in surface roughness due to LAM-MQL technology.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Tianxin Wang, Xiaoyan Cheng, Xuan Li, Jianan Ma, Shuo Yan, Xueli Hu, Kai Qi, Weiwen Fan, Manman Liu, Xiaoyi Xu, Xiaomei Lu, Xiaoshun Jiang, Yong Zhang
Summary: Here, we report the successful fabrication of high-aspect-ratio lithium niobate (LN) nanostructures by using femtosecond-laser-assisted chemical etching. The etching rate is enhanced to 2 μm/h and the nanohole size reaches ~100 nm, with an aspect ratio above 40:1. This work paves a way for fabricating LN nano-integrated devices for advanced optic and electronic applications.
Article
Chemistry, Multidisciplinary
Tianxin Wang, Xiaoyan Cheng, Xuan Li, Jianan Ma, Shuo Yan, Xueli Hu, Kai Qi, Weiwen Fan, Manman Liu, Xiaoyi Xu, Xiaomei Lu, Xiaoshun Jiang, Yong Zhang
Summary: We report the successful fabrication of high-aspect-ratio lithium niobate (LN) nanostructures using femtosecond-laser-assisted chemical etching. The etching rate is enhanced to 2 μm/h. The nanohole size reaches approximately 100 nm and the aspect ratio is above 40:1.
Article
Materials Science, Multidisciplinary
Reza Abedinzadeh, Ehsan Norouzi, Davood Toghraie
Summary: The research focuses on the laser-assisted machining of aluminum based hybrid nanocomposites, investigating the effects of process parameters on surface roughness, cutting force and temperature. It was found that cutting speed and depth of cut have significant impacts on surface roughness and cutting force, respectively, with optimal cutting conditions identified at specific laser power, cutting speed, and cutting depth.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Optics
Xiang-Chao Sun, Xue-Qing Liu, Zhi-Juan Sun, Shun-Xin Li, Jia-Xin Zheng, Hong Xia, Lei Wang
Summary: In this study, a high-efficiency self-modulated femtosecond laser hybrid technology was proposed to fabricate high aspect-ratio nanostructures on sapphire. The technology achieved the fabrication of periodic nanostructures and realized wafer-scale nanostripes in gratings.
Article
Chemistry, Physical
Jing Li, Wanwan Chen, Yongwei Zhu
Summary: This study proposes a new mechanism for two-dimensional ultrasonic assisted grinding-electrolysis-discharge generating machining (2UG-E-DM). The influence of vibration directions on grinding characteristics and surface morphology was analyzed through motion simulation. Comparative experiments confirmed the effect of ultrasonic assistance on weakening of grinding force, widening of surface pits, and leveling of surface morphology. Simulation analysis of a single abrasive particle verified the experimental results. Machining tests showed that increasing workpiece and tool amplitude resulted in a faster reduction of normal force grinding force compared to tangential force grinding force. The effect of surface electrolysis discharge machining was significant, increasing the number of exposed particles while reducing both the residual height and surface roughness through vibration grinding. Increasing the two-dimensional amplitude to 5 μm expanded the grinding domain and significantly reduced surface roughness through the dragging and rolling of reinforced particles, resulting in good surface quality.
Article
Optics
K. Venkata Rao, L. Suvarna Raju, Gamini Suresh, J. Ranganayakulu, Jogi Krishna
Summary: This study utilized vibration signals to predict the surface roughness, kerf width, and metal removal rate in laser beam machining of stainless steel. Mathematical models were developed and validated with experimental results. The effects of laser power, laser frequency, cutting speed, and nozzle tip distance on the machining quality were analyzed. Finite element simulation was also conducted to study the influence of molten metal temperature on the heat affected zone.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Automation & Control Systems
Yunqi Sun, Changfeng Yao, Liang Tan, Minchao Cui, Jianxin Luo, Xuhang Gao
Summary: This paper studies a new process method of vibration finishing directly on the milled surface, explores the method of controlling milling process to affect the surface quality of vibration finishing, and successfully establishes the relevant mapping model. Through experimental research and eigenvalue analysis, it is found that surface roughness is not completely positively correlated with processing time, providing important theoretical and experimental basis for improving the machining quality and stability of aircraft engine parts.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yezhuang Pu, Yugang Zhao, Jianbing Meng, Guoyong Zhao, Haiyun Zhang, Qian Liu
Summary: The study systematically investigated the effects and optimization of laser power, spindle speed, feed rate, and cutting depth on surface roughness and work hardening of LAM Si3N4 using grey relational analysis coupled with the Taguchi method. It was found that the combination of machining parameters determines the material removal mode at the material removal location, affecting surface quality. Smaller cutting depth and higher laser power resulted in decreased surface roughness and work hardening degree in ductile material removal mode.
Article
Optics
Yan Wang, Mingyue Zhang, Jie Yin, Yinghuai Dong, Jingnan Zhao, Xiaofeng Zhang, Bin Lin
Summary: In this study, a new method using ultrasonic vibration-assisted laser processing was proposed to fabricate aluminum superhydrophobic surface. The influence of ultrasonic vibration on contact angle and surface roughness was investigated through experiments and simulations. It was proven that this method can achieve a hydrophobic state with low surface roughness, making it suitable for various self-cleaning applications.
OPTICS AND LASER TECHNOLOGY
(2022)
