Article
Engineering, Manufacturing
Jinhuan Xu, Jianyong Li, Meng Nie, Yueming Liu
Summary: The material removal process of magnetorheological foam plane finishing (MRFPF) method considering various processing conditions was investigated. A material removal rate (MRR) model based on the updating type of workpiece moving trajectory, magnetic field distribution, and polishing speed in the polishing area was established. The MRR is generated by integrating the polishing pressure and speed over the time that polishing pressure on the workpiece updating for 1 cycle, with a relative error between theoretical and experimental results less than 11.63%. Moreover, MRFPF can achieve much higher MRR and surface flatness improvement rate than that of magnetorheological finishing (MRF) under different processing conditions, indicating the effectiveness of MRFPF in planar finishing.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Chemistry, Analytical
Rensheng Wang, Shichao Xiu, Cong Sun, Shanshan Li, Xiangna Kong
Summary: A new reciprocating magnetorheological polishing (RMRP) method for flat workpieces was proposed in this study. It was found that the rotational speed of the workpiece had a greater impact on material removal rate (MRR) compared to the eccentric wheel speed and eccentricity. The experimental results validated the MRR model and showed significant improvement in surface roughness under specific technical parameters.
Article
Automation & Control Systems
Yanjun Lu, Xiaoshuang Rao, Jiaxuan Du, Weifeng Guan
Summary: This paper proposes a dry single impulse EDM method for machining RB-SiC and reveals the material removal mechanism through analysis of topographies and phase components of the machined surface. Short pulse-on time mainly removes Si matrix, while the removal mechanism of SiC particles is attributed to thermal shock-induced spalling and decomposition at high temperatures.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Qikai Li, Xiaoyuan Li, Zuoyan Ye, Lili Wang, Jinlong Pan, Yunfei Zhang, Minheng Ye, Chao Wang
Summary: This study investigates the impact of nanodiamond abrasive agglomeration on the material removal rate in magnetorheological finishing (MRF) through both experimental and molecular dynamic simulation (MDS) approaches. A novel active abrasive contact sites model is proposed to simulate the material removal rate, showing good agreement with experimental results. This work provides insights into controlled nanoscale material removal and atomic adhesion friction mechanism in MRF.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Automation & Control Systems
Limin Zhang, Weixing Li, Mingming Lu, Jieqiong Lin, Yuyang Liu, Changqing Liu
Summary: A new material removal rate (MRR) model is established in this paper to investigate the removal mechanism of fused silica glass. The model considers the influence of average load and magnetic interaction force based on fluid mechanics and Preston's equation. A suite of experiments is conducted to validate the validity of the MRR model, and the experimental results are highly consistent with the model results.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Du Xu, Tete Hu
Summary: This paper presents a magnetorheological-based polishing tool and vibration control method to improve stability and reduce vibration during machining, thereby improving the machining quality. Firstly, a polishing end-effector with MR-based damper and magnetic spring mechanism is designed, and the vibration characteristics are theoretically analyzed. Multi-objective optimization is performed to minimize the maximum frequency response value of the polishing system. Then, a disturbance observer is designed to estimate the nonlinear cutting force, and a vibration controller based on polishing force with gravity compensation is proposed to maintain normal contact force and reduce vibration.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Chemistry, Physical
Qiufa Luo, Jing Lu, Zige Tian, Feng Jiang
Summary: In this study, the interaction between diamond abrasives and the 6H-SiC wafer surface during ultra-precision polishing was analyzed through experiments and molecular dynamics simulations. It was found that controlling material removal uniformity and restricting abrasive cutting depth to tens of nanometers or less can achieve a smooth, scratch-free and almost damage-free wafer surface. These findings provide insights into the importance of controlling material removal uniformity in nanoscale manufacturing processes.
APPLIED SURFACE SCIENCE
(2021)
Article
Optics
Zhifan Lin, Hao Hu, Yifan Dai, Zhong Yaoyu, Shuai Xue
Summary: This paper developed a theoretical model to describe the material removal rate and surface quality after Magnetorheological finishing (MRF) in order to better understand the material removal mechanism. Experimental results were highly consistent with the theoretical model calculated results, making the theoretical model a reference for high-efficiency and ultra-smooth MRF process.
Article
Materials Science, Ceramics
Kun Zhang, Zhen Yin, Chenwei Dai, Qing Miao, Peng Zhang, Ziyang Cao
Summary: The material removal mechanism of elliptic ultrasonic vibration-assisted grinding (EUVAG) of SiC ceramics is investigated by studying the variations in grinding force, grinding specific energy, material removal rate, scratch morphology, and smooth surface ratio from the perspectives of wheel speed and undeformed chip thickness. Experimental results show that EUVAG significantly reduces grinding force and specific energy, improving the material removal rate compared with conventional grinding (CG). The grinding force is directly proportional to the undeformed chip thickness and exhibits different trends with varying wheel speeds.
CERAMICS INTERNATIONAL
(2023)
Article
Automation & Control Systems
Zhen Ma, Yebing Tian, Cheng Qian, Shadab Ahmad, Zenghua Fan, Zhiguang Sun
Summary: Previous studies have demonstrated that magnetorheological shear thickening polishing (MRSTP) can achieve nano-level surface quality. This research aims to investigate the numerical simulation and material removal characteristics during the MRSTP process. A magnetic field generation apparatus was designed and developed, and the model of magnetic field distribution was imported into a computational fluid dynamics (CFD) module to create the desired polishing environment. Through CFD simulation, the polishing stress behaviors were analyzed based on various parameters. The results showed that the pressure on the workpiece surface decreased with the increase of rotational speed but increased with the flow velocity of MRSTP media.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Y. Ming, X. Huang, D. Zhou, X. Li
Summary: The study proposes an efficient polishing method for zirconia ceramics based on weak magnetorheological strengthening thickening effect, showing promising results in nanoscale material removal and evolution mechanisms of the ceramic surface.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Lin Zhang, Chunlei Zhang, Wei Fan
Summary: This study reveals the influence of robotic normal positioning error on the MRF removal rate, and presents a force-controlled end-effector for robotic MRF process to enhance stability and efficiency.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Jiqiang Wang, Yongda Yan, Chen Li, Yanquan Geng
Summary: This study investigates the material removal mechanisms and subsurface damage in three-dimensional ultrasonic vibration-assisted nanomilling (3D-UVAN) using experiments and molecular dynamics (MD) simulations. The findings reveal that the material removal is dominated by shearing and extrusion depending on the maximum undeformed chip thickness (UCT). The strain rates generated by 3D-UVAN are higher than those in 2D nanomilling, leading to fracture chips. The effects of vertical vibration amplitude and frequency on subsurface damage are also studied, showing that high strain rate results in shallow subsurface damage.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Automation & Control Systems
Peng Zhang, Jingfang Yang, Huadong Qiu
Summary: A mechanical polishing model for silicon carbide substrates was established, optimizing material removal rate parameters and providing a key guarantee for the next CMP process through surface quality observation and characterization. The importance of MRR for ultra-smooth polishing was confirmed, providing assurance for the application of semiconductor equipment and technology.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Feihu Zhang, Yiren Wang, Defeng Liao, Qiao Xu
Summary: The concept of vibration-assisted polishing is proposed to improve the material removal rate of optical elements, solving the efficiency problem in continuous polishing and revealing the mechanism of material enhanced removal.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yan Gu, Yan Zhou, Jieqiong Lin, Allen Yi, Mingshuo Kang, Hao Lu, Zisu Xu
Article
Chemistry, Analytical
Yamei Liu, Yanping Zheng, Yan Gu, Jieqiong Lin, Mingming Lu, Zisu Xu, Bin Fu
Article
Chemistry, Analytical
Yan Gu, Xiuyuan Chen, Faxiang Lu, Jieqiong Lin, Allen Yi, Jie Feng, Yang Sun
Article
Optics
Jieqiong Lin, Haitao Wang, Yan Gu, Allen Yi, Junqiang Wang, Zhen Yang
Article
Engineering, Industrial
Xiuyuan Chen, Yan Gu, Jieqiong Lin, Allen Yi, Mingshuo Kang, Xinyu Cang
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2020)
Article
Optics
Jieqiong Lin, Yan Zhou, Haitao Wang, Yan Gu, Minghui Gao, Xin Guo, Haibo Xu
Summary: This study conducted a comprehensive analysis of an airborne camera, investigating the connection between camera structure and optical systems, and studying the impact of microvibration on optical performance as well as the change of optical surface accuracy.
Article
Materials Science, Multidisciplinary
Yan Zhou, Yan Gu, Jieqiong Lin, Mingming Lu, Yanping Zheng, Weidong Zhou, Huibo Zhao, Ru Jia, Shuang Wu
Summary: This paper investigates the application of fast tool servo (FTS) turning in processing single-crystal silicon. The effects of tool radius, feed speed, and cutting depth on the maximum undeformed chip thickness are studied. Experimental results show that FTS technology can significantly increase the critical undeformed chip thickness, improve surface and subsurface quality, and reduce tool wear.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Optics
Jieqiong Lin, Xin Guo, Yan Zhou, Yan Gu, Huibo Zhao, Zisu Xu, Wenji Lin, Jihao Zhang
Summary: The TDICCD aerial camera was developed to study the relationship between the structure and optical system. Integrated analysis and experimental methods were proposed to study and verify the influence of thermal disturbance on the optical performance and optimal camera design. Nodal displacement and rigid body displacement were calculated to determine the effects of thermal disturbance on the camera's optical system. The analysis showed that low-temperature conditions have a significant impact on the camera's optical performance.
JOURNAL OF OPTICS-INDIA
(2022)
Article
Energy & Fuels
Yan Gu, Jichen Xu, Jieqiong Lin, Haihang Ma, Huibo Zhao, Yishuo Zhang, Baoyu Sun
Summary: This study proposes a vibration-assisted UV nanoimprint lithography technique to effectively improve the power conversion efficiency (PCE) of Si solar cells. By applying piezoelectric vibration, the contact area between the photoresist and the grating's side wall is increased, reducing surface tension and increasing the photoresist filling rate by 25%. The best grating parameters are determined using Finite Difference Time Domain (FDTD) and vibration-assisted UV nanoimprint is used to fabricate the periodic grating structures, resulting in a 25% increase in PCE compared to bare Si solar cells.
Article
Materials Science, Ceramics
Yan Zhou, Yan Gu, Jieqiong Lin, Huibo Zhao, Siyang Liu, Zisu Xu, Hang Yu, Xingbao Fu
Summary: In this paper, the authors studied the improvement of machining SiC particle-reinforced aluminum composites using ultrasonic vibration-assisted cutting (UVAC) technology. Through finite element simulation and experimental observation, it was found that UVAC technology can reduce tool wear, improve machinability, and enhance surface integrity of the composites.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yan Gu, Yishuo Zhang, Jieqiong Lin, Huibo Zhao, Haihang Ma, Hongwei Yao, Mingshuo Kang, Bin Fu, Silin Liu
Summary: In this study, a piezoelectric-driven vibration-assisted UV nanoimprint method was proposed to improve the performance of diffraction gratings. It was found that introducing one-dimensional lateral vibrations with low frequency and low amplitude improved surface quality and filling rate of the grating. The effects of grating properties and vibration parameters were investigated, and a novel asymmetric vibration stage was designed. The method was verified to accurately fabricate diffraction gratings with superior performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Computer Science, Information Systems
Yan Gu, Ao Liu, Jieqiong Lin, Xiuyuan Chen, Faxiang Lu, En Sun
Article
Computer Science, Information Systems
Jieqiong Lin, Hao Lu, Yan Gu, Xiaoqin Zhou, Chenglei Xin, Mingshuo Kang, Xinyu Cang
Article
Chemistry, Analytical
Yan Gu, Xiuyuan Chen, Jieqiong Lin, Mingming Lu, Faxiang Lu, Zheming Zhang, Hao Yang
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
