Article
Engineering, Manufacturing
Linhe Sun, Wenhong Duan, Hanqiang Wu, Minghan Chen, Jiang Zeng, Yongbo Wu, Yuhan Chen
Summary: Theoretical and experimental investigations have shown that using straight-nosed cutting tools in the single-point diamond turning of ZnSe aspheric surfaces can significantly improve machining performance and surface integrity. The use of straight-nosed cutting tools reduces cut thickness, residual feed marks, and improves surface roughness. It also reduces work adhesion and micro-edge chipping, resulting in extended tool life.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Optics
Van Truong Vu, Syed Azkar Ui Hasan, Hongseok Youn, Youngdurk Park, Hocheol Lee
Summary: This study uses ultra-precision machining to achieve ophthalmic Fresnel lenses, overcoming constraints and limitations to ensure compatibility and performance of the lens pattern. The fabricated lens demonstrated high imaging performance and can be extended to visual and infrared applications.
Article
Engineering, Multidisciplinary
Chengsong Shu, Xipeng Guo, Shaohui Yin, Shuai Huang, Zhaozhao Mao
Summary: This article introduces a fabrication method for high-quality CEMLA glass optical elements, which addresses molding challenges on hard and brittle glass materials. By using single-point diamond turning on the Ni-P mold, a high-precision CEMLA mold is machined, and a high-precision optical element is obtained through precision glass molding.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Editorial Material
Optics
Xiangang Luo
Summary: The 4 m diameter SiC aspheric mirror is achieved through breakthroughs in blank mirror preparation, asphere fabrication, testing, cladding, and coating technologies. It paves the way for future research on large SiC mirrors for astronomical observation.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Optics
Peng Song, Chao Yang, Yang Bai, Jiawen Ding, Jie Guo, Chuang Li, Yuxuan Wang, Changxi Xue
Summary: This study proposes a processing method for aluminum alloy mirrors, which combines single point diamond turning and small tool polishing to achieve high surface quality and minimize surface roughness. By establishing a prediction model and optimizing polishing parameters, the machining accuracy of aluminum alloy mirrors is effectively improved.
Article
Engineering, Mechanical
Quanhui Wu, Yazhou Sun, Baisong Pan, Dawei Gu
Summary: This paper presents a combined design, performance analysis, and experimental verification of an ultra-precision aerostatic turning machine tool (UPATMT). The UPATMT utilizes aerostatic support systems for the spindle system and the feed system. Mathematical and physical models are established, and the dynamic performance of UPATMT is analyzed using the finite element method. The electromechanical control system is simulated and analyzed to improve the dynamic performance. Modal tests and turning experiments are conducted, and the results demonstrate high machining performance with surface roughness meeting the requirements for high-quality optical components.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Automation & Control Systems
Yujie Liu, Hao Tong, Guodong Liu, Yong Li, Qifeng Tan
Summary: This paper focuses on the tool wear issue when turning quartz glass with diamond tools with certain edge radius. A cutting model is established to estimate the damaged layer thickness on the machined surface, and the undeformed chips shape considering the strain rate is obtained by numerical simulation method. Experimental results show that the lateral crack depth calculated by the model has the same variation pattern as the surface roughness Sk value, and good consistency is achieved when the feed rate is ranging 1-4 mu m/r with a cutting depth of 2 mu m.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Automation & Control Systems
Kuntao Huang, Hu Gong, Xubing Chen
Summary: This study proposes a method to solve the UPT path generation problem for freeform surfaces with free boundary contours. It calculates the tool location point using surface projection and boundary wire projection algorithms, and generates transition paths through interpolation for smooth movement.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Zhengjian Wang, Xichun Luo, Jining Sun, Philipp Seib, Suttinee Phuagkhaopong, Wenlong Chang, Jian Gao, Amir Mir, Andrew Cox
Summary: The importance of silk fibroin particles as effective drug carriers has been recognized due to their mechanical strength, biocompatibility and biodegradability. The study explores the use of ultra-precision diamond turning technology to fabricate silk particles with controlled size and shape, providing a chemical-free alternative with improved precision. Additionally, machinability and chip morphology in the process were discussed, showing that UPDT of silk film can lead to precise chip formation for potential drug delivery applications.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Automation & Control Systems
Marco Buhmann, Erich Carelli, Christian Egger, Klaus Frick
Summary: This study proposes a new computation method for tool path generation in three-axis corrective machining, using numerical approximation techniques to calculate surface normal vectors and maintain consistent radial axis motion, achieving error values below 1 nm.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Instruments & Instrumentation
Ruiwen Geng, Xiaojing Yang, Qiming Xie, Wanqin Zhang, Jie Kang, Yueqin Liang, Rui Li
Summary: This study reveals the ductile-brittle transition depth of ZnSe ceramics in ultra-precision diamond turning through novel cutting tests, and investigates the effect of feed rate on surface quality. The material removal mechanism in the ductile regime is explored using TEM, showing the formation of high-density dislocations and deformation twins to promote ductile deformation.
INFRARED PHYSICS & TECHNOLOGY
(2021)
Article
Engineering, Industrial
Monica L. Nogueira, Noel P. Greis, Rachit Shah, Matthew A. Davies, Nicholas E. Sizemore
Summary: This study compares the performance of machine learning methods in predicting surface fractures using numerical machining parameters and image data, and explores different techniques and methods for fracture identification in intensity maps. Hybrid models combining numerical process data and image data are also proposed.
JOURNAL OF MANUFACTURING SYSTEMS
(2022)
Article
Engineering, Multidisciplinary
Sanghu Han, Jaebum Sung, Byeongjo Ko, Minjun Kwon, Sewon Kim, Hongyun So
Summary: In this study, an artificial compound eye lens (ACEL) was fabricated using a laser cutting machine and PVA solution. The ACEL demonstrated superior light detection ability in low-temperature environments.
BIOINSPIRATION & BIOMIMETICS
(2022)
Review
Automation & Control Systems
Shahrokh Hatefi, Khaled Abou-El-Hossein
Summary: Single-point diamond turning (SPDT) is an emerging ultra-precision machining technology used for advanced manufacturing of optical components. The application of magnetic assistance has shown promising results in improving the quality of optical surface generation and enabling the diamond turning of hard-to-cut materials in dry machining condition.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Yang Cao, Xuesen Zhao, Guo Li, Wenjun Zong, Tao Sun
Summary: In this study, theoretical surface topography models were developed for ultra-precision turned surfaces of end faces, cylinders, cones, and spheres influenced by turning condition parameters. The models were validated through experiments and the relationship between frequency information and the spatial domain was obtained. The impact of condition parameters on surface roughness was determined by calculating area power values. The established relational model provides qualitative and quantitative understanding of the influence of machining conditions on the machined surface, and contributes to the digitization of ultra-precision machine tools.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Industrial
Fusheng Liang, Chengwei Kang, Fengzhou Fang
Summary: This paper proposes a new method for tool path planning on triangular mesh surfaces with consideration of the scallop height restriction and path smoothness. The method first uses a harmonic map algorithm and constructs the shortest boundary path graph (SBPG) to achieve smooth paths and meet the scallop height restriction requirements. The efficiency is improved through a subdivision method and path smoothness is enhanced by smoothing treatment, with the tool path planning performed iteratively.
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
(2022)
Article
Engineering, Mechanical
Gang Shen, Jufan Zhang, Fengzhou Fang
Summary: The study revealed that hydrodynamic pressure has a minor role in the tribological performance of textured bioimplants under conditions of low viscosity lubricant and low sliding speed. This phenomenon was attributed to the working environments of artificial joints, as further theoretical study and comparison with tribo-systems with various working conditions demonstrated. Additionally, a frictional study with different sliding velocities confirmed that hydrodynamic pressure has little effect on the tribological performance of textured bioimplants.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Review
Green & Sustainable Science & Technology
Zhonghe Ren, Fengzhou Fang, Ning Yan, You Wu
Summary: Machine vision plays a significant role in improving the efficiency and quality of defect detection, including optical illumination, image acquisition, image processing, and image analysis technologies. The future development of visual inspection technology will mainly focus on the application of deep learning.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Hao-Jie An, Jin-Shi Wang, Feng-Zhou Fang
Summary: This paper studies the interaction of a femtosecond EUV pulse with monocrystalline silicon using molecular dynamics coupled with a two-temperature model. It discusses dynamical processes under various fluencies, emphasizing the impact of photoionization and bond breakage on atom desorption, and explores the possibility of single atomic layer removal.
ADVANCES IN MANUFACTURING
(2022)
Review
Engineering, Manufacturing
Jian Gao, Xichun Luo, Fengzhou Fang, Jining Sun
Summary: This paper discusses the theoretical boundary of ACSM, the physical mechanisms of atomic interactions and energy beams-matter interactions, the dominant mechanisms of ACSM processes, and the current digital research and comparison. Future research directions are proposed to support and accelerate the industrial-scale implementation of ACSM.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2022)
Article
Biochemical Research Methods
Linhui Yu, M. Sohail Noor, Zelma H. T. Kiss, Kartikeya Murari
Summary: In this study, the performance of a single fiber spectroscopic system for measuring hemodynamic response in DBS animal model was evaluated. The results showed that the system is capable of accurately measuring minute relative changes in oxygen saturation and blood volume fraction in vivo, and has the potential for measuring other physiological parameters.
JOURNAL OF BIOPHOTONICS
(2022)
Article
Optics
Zhonghe Ren, Fengzhou Fang, Zihao Li, Rui Niu
Summary: An intelligent detection based on machine vision and deep learning is proposed for optical performance evaluation of collimating lenses, achieving accurate classification with a classification accuracy of 98.89% through a dual-branch structure light-spot evaluation model and a weighted multi-model voting strategy. The model can be well applied to quality inspection in collimating lens production through the developed application software.
Article
Engineering, Manufacturing
Mingyue Shen, Chengwei Kang, Fengzhou Fang
Summary: This study aims to establish the relationship between material removal characteristics and various surface features on selective laser melted 316L stainless steel after electropolishing (EP). The study reveals that different microstructures and feature locations lead to diverse material removal behaviors during EP process. Understanding the characteristics of un-sintered powders and sintered area on SLM surfaces is crucial in achieving satisfactory surface finish in EP.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Mechanical
Gang Shen, Jufan Zhang, David Culliton, Ruslan Melentiev, Fengzhou Fang
Summary: Tribological performance plays a crucial role in the lifespan of artificial joints. The relationship between surface roughness and coefficient of friction has been studied under both dry and lubricated conditions. The results show that the friction coefficient does not always decrease with decreasing surface roughness under dry test, but instead exhibits a threshold value. However, under wet test, the coefficient of friction consistently decreases as the surface roughness reduces. Surface texturing technology has been proven effective in improving tribological performance.
FRONTIERS OF MECHANICAL ENGINEERING
(2022)
Article
Optics
Ning Yan, Xianlei Liu, Zexiao Li, Fengzhou Fang, Xiaodong Zhang
Summary: This study systematically investigates the relationship between optical performance and tool marks and finds that the effect of tool marks depends on the ratio of tool feed and tool nose radius. The impact of tool marks is more severe in optical systems with two mirrors. The study suggests reducing the ratio and changing the angle of tool marks to improve the optical performance of the system.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Physics, Applied
Peizhi Wang, Fengzhou Fang
Summary: Atomic layer etching (ALE) is an important technique for manufacturing nanostructures in next-generation nanoelectronics. However, current plasma ALE methods cause damage to structures and substrates. Introducing a laser source can reduce ion energy and minimize surface damage.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Optics
Shan Wu, Jinshi Wang, Fengzhou Fang
Summary: Manufacturing-induced sidewall roughness significantly affects the diffraction efficiency of extreme ultraviolet (EUV) gratings and masks, which can be evaluated using a Debye-Waller damping factor. The paper establishes a model of rough lines along the thickness direction and highlights the importance of high aspect ratio transmission gratings.
Article
Optics
Yao Zhou, Jufan Zhang, Fengzhou Fang
Summary: Optical near-eye see-through displays are widely used in various fields such as medical, education, and entertainment. However, most existing displays suffer from vergence-accommodation conflicts. In this study, a seethrough display with addressable depth cues and a wider field of view was developed to reduce dizziness and vertigo problems. The presenting depth of virtual images can be adjusted by changing the curvature of the liquid lens.
Review
Chemistry, Multidisciplinary
Hongshuai Liu, Qin Zhou, Wei Wang, Fengzhou Fang, Jufan Zhang
Summary: Nanopores have extraordinary properties and potential applications in various industries. The manufacturing of solid-state nanopores has become a hot topic in recent years. However, the fabrication of nanopore arrays still faces challenges in terms of efficiency, accuracy, applicable materials, and cost.
Review
Chemistry, Analytical
Zhichao Geng, Ning Huang, Marco Castelli, Fengzhou Fang
Summary: This review discusses the increasing attention on roughness down to atomic and close-to-atomic scale in recent manufacturing development, which can be achieved through high-precision polishing processes. The article presents various polishing approaches at atomic and close-to-atomic scale on planar and curved surfaces, including chemical mechanical polishing, plasma-assisted polishing, catalyst-referred etching, bonnet polishing, elastic emission machining, ion beam figuring, magnetorheological finishing, and fluid jet polishing. The authors provide detailed discussions on the removal mechanisms, polishing systems, and industrial applications of these polishing approaches. They also offer perspectives for future studies to tackle existing and potential challenges and promote technological progress.
