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Article
Materials Science, Ceramics
Zhelun Ma et al.
Summary: Laser-assisted machining (LAM) is an effective technique for processing ceramic materials without damage. This study investigated the mechanism by which LAM technology improves the machinability of zirconia ceramic. By combining experiment and simulation, the absorptivity of zirconia ceramic to fiber laser energy was determined. The temperature-dependent mechanical properties and damage mechanisms of zirconia ceramic were also studied. The results provide a clear explanation of how LAM technology enhances the machinability of zirconia ceramics and offer guidance for its industrialization.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Zhongpeng Zheng et al.
Summary: Rotary ultrasonic milling is a new and efficient fabrication method for surface microstructures. However, conventional rotary ultrasonic milling suffers from the interference of secondary back-cutting, resulting in poor controllability of the surface geometries. In this study, oblique rotary ultrasonic milling (ORUM) is proposed to improve the process controllability by eliminating secondary back-cut interference. The efficacy of ORUM is verified through experimental results and its potential for industrial applications is demonstrated by fabricating fish-scale microstructures on freeform surfaces.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Shaoqing Qin et al.
Summary: This study focuses on accurately predicting the cutting force in ball-end milling of sculptured surfaces. The researchers propose an improved Z-map method and a simplified IUCT model to achieve this. Experiment results show the effectiveness of these models and highlight the significant influence of tool postures on the machining process.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Manufacturing
Yi He et al.
Summary: Laser-assisted machining is a promising method for high-strength alloys, achieving high efficiency and low damage. Laser-assisted scratching was performed on a high-strength TC17 titanium alloy to investigate the surface formation mechanisms. The results showed that laser assistance reduced the scratch force and improved the material removal efficiency. Molecular dynamics simulations validated the experimental findings and provided insights into the subsurface formation process.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2023)
Article
Engineering, Manufacturing
Xianjun Kong et al.
Summary: Laser-assisted cutting technology has gained attention in improving the machinability of difficult-to-machine materials in aviation. A 3D transient laser heating model was developed to predict the preheating temperature of the cutting layer. The study investigated the effect of cutting parameters on the magnitude, frequency, and amplitude of the cyclic cutting forces in both conventional machining and laser-assisted machining. It was found that laser assistance reduces material flow stress, cutting force magnitude, and amplitude, but increases the frequency of circulating cutting forces. Additionally, the effect of laser-assisted machining on reducing cutting force fluctuations and improving surface quality was explored.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Mechanical
Yi He et al.
Summary: Laser-assisted machining is an effective method to improve the machinability of hard-to-machine materials such as titanium alloys. This study used molecular dynamic simulations to investigate the subsurface damage in laser-assisted machining and analyzed the effects of scratching velocity and laser power on various parameters. The results showed that laser assistance can enhance the machinability and reduce subsurface damage. It was also found that excessive laser power inhibits the improvement of laser assistance. Experimental results confirmed the reduction of subsurface damage in laser-assisted scratching compared to traditional scratching. Overall, this research provides a better understanding of subsurface damage in laser-assisted machining and offers insights for achieving optimal subsurface damage depth.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Fanwei Meng et al.
Summary: This paper establishes a novel force prediction model for ultrasonically assisted polishing, which is critical for evaluating geometric accuracy and surface finish. A material removal model is also developed for this process using a spherical polishing head at different tilt angles. Experimental studies show a good correlation between the surface profiles of alumina ceramics after multiple trajectory polishing and the experimental and simulated results. The parameters of the ultrasonic polishing process are optimized using gray correlation analysis, providing theoretical support for selecting process parameters and planning surface polishing trajectories.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Hao Wang et al.
Summary: Ultrasonic elliptical vibration cutting (UEVC) technology has been used to achieve ultra-precision machining of difficult-to-machine metal materials like tungsten. This study utilized molecular dynamics simulation to investigate the plastic deformation and microstructure evolution mechanisms of tungsten under UEVC. The results revealed that dislocation slip, amorphous phase transformation, and nanocrystal formation were the main plastic deformation mechanisms during tungsten removal. UEVC induced high shear stress, leading to the formation of nanocrystals and high dislocation density.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Physical
Jian Gao et al.
Summary: The bias-induced oxidation was investigated using ReaxFF molecular dynamics simulations to fill the knowledge gaps in understanding physical-chemical reactions at the atomic scale. This understanding is crucial for accurate process control of bias-induced local anodic oxidation nano lithography. The simulation results showed that bias-induced oxidation mainly led to the formation of Si-O-Si bonds in the oxide film and the consumption of H2O, while the chemical composition on the oxidized surface remained essentially unchanged.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xuliang Li et al.
Summary: Determining the brittle-to-ductile transition (BDT) threshold is crucial for efficient machining processes of brittle materials. This study investigated the effects of tip shape and microstructural variation on the BDT behavior of single-crystal silicon and gallium arsenide. The critical cutting depth for BDT was influenced by both material microstructure and tip shape, with stress distribution and microstructure evolution being impacted. Using a sharp tip, silicon had a slightly smaller critical cutting depth than gallium arsenide, while with a blunt tip, gallium arsenide had a smaller critical cutting depth due to its higher brittleness index and density of crystallite defects.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Manufacturing
Tianming Yan et al.
Summary: By studying the motion law of micro-milling cutter teeth and conducting simulation analysis and experiments, this study established the equation of cutting path and derived the functional relationship between feed speed and cutting force. The results showed the optimal feed speed for aramid fiber reinforced polymer micro-milling and verified the power function relationship between feed speed and horizontal cutting force.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Mechanical
Yongqiang Wang et al.
Summary: This study used molecular dynamics simulation to investigate the cutting of GaN along different crystal orientations. The simulation revealed distinct outcomes for different cutting directions, with enhanced removal efficiency and generation of more dislocations when cutting on a-plane or along the [-2110] direction on m-plane. However, cutting on c-plane or along the [0001] direction on m-plane showed the potential for achieving better surface integrity. This study provides valuable insights into the effect of crystallite orientation on the cutting performance of GaN and demonstrates the importance of appropriate selection of cutting directions for improved surface quality.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Manufacturing
Chen Li et al.
Summary: The study explores the deformation and removal mechanisms of gallium nitride (GaN) single crystals during ultra-precision machining. The experimental results show that abrasive size significantly affects the surface morphology and roughness, leading to a transition from brittle fracture-dominated surface to a plastic surface with reduced abrasive size. Through cross-sectional TEM method and MD simulation, it is found that plastic deformation in GaN crystals is caused by the formation of polycrystalline nanocrystals and defects, with an observable delamination phenomenon in the plastic deformation zone.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2022)
Review
Engineering, Manufacturing
Jian Gao et al.
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
Materials Science, Ceramics
Xiaosong Meng et al.
Summary: This study proposes a new machining method with ultra-high precision for silicon carbide materials. The results show that the use of groove texture can significantly improve the polishing quality.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Changlin Liu et al.
Summary: This paper investigates the cutting mechanism of polycrystalline silicon in nanometric cutting using molecular dynamics simulation. The results show that the cutting temperature significantly affects the surface generation, plastic deformation, and phase transition mechanism of polycrystalline silicon.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Mechanical
Shaoqing Qin et al.
Summary: This paper introduces the Longitudinal-Torsional Ultrasonic Assisted Milling (LTUAM) method for machining high-strength titanium alloy, which can reduce cutting force and enhance surface micro-hardness.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Industrial
Zhelun Ma et al.
Summary: In this study, a predictive model for grinding force during laser-assisted grinding (LAG) process is established, taking into account the mechanical properties of the material, micro interaction between grit and material, and random shapes and distributions of abrasive grits. The model explains the mechanism of reduction in grinding force during LAG. Experimental validation and investigation of grinding parameters show that optimal parameters can significantly reduce grinding force and improve surface integrity.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Pengsheng Xue et al.
Summary: Three different LR inter-layer scanning strategies were studied in this research, showing that LR45 sample has better mechanical properties and can reduce the anisotropy of AM parts.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Yuhua Huang et al.
Summary: This study focused on the multi modes features during the machining of SiC, using scratching experiments and atomistic simulations. The scratching force and acoustic emission signals were analyzed to distinguish different scratching modes. The localized stress distribution and morphology were analyzed using non-destructive birefringence analysis. Four scratching modes were identified and atomistic simulations were conducted to understand the underlying atom-level behaviors. A qualitative multi layers model was proposed to explain different material removal mechanisms.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Manufacturing
Fengzhou Fang et al.
Summary: Nanometric cutting is a manufacturing technology that removes material at the nanoscale to generate high-quality surfaces. It has played a vital role in advancing scientific discovery and promoting innovation in various fields. This article systematically reviews the fundamental issues, innovative methods, and challenges of nanometric cutting, while also outlining the future perspectives towards atomic scale manufacturing.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2022)
Article
Engineering, Mechanical
Hongfei Tao et al.
Summary: This study proposes a new index, undeformed chip width, to analyze the stochastic characteristics in material removal process and predict the surface roughness of ground wafer. The relationship between undeformed chip width and surface roughness is discussed, and the developed models are verified through grinding experiments.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Chemistry, Physical
Weiwei Huang et al.
Summary: This study investigates the effects of ultrasonic vibration on the vibration-assisted nanogrinding process of single-crystal iron using a molecular dynamics model. The results show that vibration changes the distribution of dislocations in the plastic zone, leading to fluctuations in material accumulation, temperature, dislocation formation, and subsurface damage. The details of plastic deformation, such as dislocation movement and phase transformation, vary with different vibration frequencies. The reduction in the projected contact area is the main cause for the decrease in grinding force.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Manufacturing
Jiqiang Wang et al.
Summary: The study focused on using AFM tip-based nanomilling to machine nanochannels on single-crystal silicon, and for the first time, established a theoretical model to predict the machined depth. The experimental results demonstrated the successful fabrication of high-quality nanochannels without pile-ups and revealed the subsurface structure of silicon crystals.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Engineering, Manufacturing
Zhirong Liao et al.
Summary: The surface integrity of machined metal components is crucial for their functionality, longevity, and overall performance. Surface defects induced by machining operations vary in scale and cause microstructural, mechanical, and chemical effects, requiring advanced evaluation and post-processing techniques. The paper explores the state-of-the-art of surface integrity research, focusing on governing mechanisms and emerging evaluation approaches, and analyzes the multi-scale phenomena associated with metal machining.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Engineering, Manufacturing
Andrea La Monaca et al.
Summary: Material removal operations are crucial for manufacturing key components in engineering systems. Understanding the influence of machining-induced features on advanced materials' performance is essential at finer temporal and spatial scales. The interplay between metallurgical and micro-mechanical conditions induced by material removal processes and their in-service response will be thoroughly explored in this review.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Materials Science, Multidisciplinary
O. R. Deluigi et al.
Summary: Research has shown that high entropy alloys exhibit a lower average number of defects in the early stages of radiation damage response compared to pure Ni, but there is no significant difference in defect evolution during the cascade, indicating that the radiation resistance of high entropy alloys may not be due to a reduction in primary damage caused by chemical disorder, but probably caused by longer-time defect evolution.
Article
Chemistry, Physical
Penghui Li et al.
Summary: This study investigated the nano-grinding process of single crystal silicon through molecular dynamics simulations, revealing that the maximum height of the grinding chip does not always increase with the grinding speed. The research also explored the structural changes and distribution of residual stresses in silicon during the grinding process.
APPLIED SURFACE SCIENCE
(2021)
Review
Engineering, Manufacturing
Bing Wang et al.
Summary: This paper reviews the research and application of high speed metal cutting (HSMC) with a focus on material removal mechanism, cutting force and temperature variations, and summarizes the advantages and shortcomings of HSMC.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Engineering, Mechanical
Dongpeng Hua et al.
Summary: Understanding contact-induced behavior in metals is crucial for studying mechanical properties. Nanoindentation studies on CoCrNi MEA revealed unique dislocation nucleation at Cr-rich clusters, contrary to conventional homogeneous nucleation in pure metals. Compositional inhomogeneity and temperature were found to influence defect behavior, with nanotwin formation and phase-transformation promoted at low temperatures.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Materials Science, Multidisciplinary
Fu-Hua Cao et al.
Article
Engineering, Industrial
Chenbing Ni et al.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2020)
Review
Engineering, Manufacturing
Zhichao Yang et al.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2020)
Review
Engineering, Manufacturing
Kaiyuan You et al.
JOURNAL OF MANUFACTURING PROCESSES
(2020)
Article
Engineering, Manufacturing
Zhendong Shang et al.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2019)
Article
Engineering, Mechanical
Binbin Meng et al.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Engineering, Manufacturing
Chen Li et al.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2019)
Article
Materials Science, Ceramics
Zhipeng Li et al.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2019)
Review
Engineering, Manufacturing
Xiuxuan Yang et al.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2019)
Review
Engineering, Manufacturing
Bi Zhang et al.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2019)
Article
Engineering, Manufacturing
Yuzhou Zhang et al.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2018)
Article
Engineering, Mechanical
Chenbing Ni et al.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2018)
Article
Materials Science, Multidisciplinary
G. Laplanche et al.
