Article
Engineering, Mechanical
Yubao Wang, Zebang Zheng, Feng Zeng, Mingwang Fu
Summary: With the trend toward product miniaturization, the use of progressive forming with sheet metals faces difficulties in fabricating parts with rotating features not aligned with the forming direction. This study developed a progressive forming process using metal wires and established a constitutive model using brass wires of different diameters and grain sizes. The dimensional errors caused by springback increased with grain size but decreased with specimen size, while surface quality deteriorated and micro-cracks formed more easily with larger grains. Optimizing the tool design successfully addressed the undesired geometry issue. This work expands the application of progressive forming in the fabrication of micro-scale parts with irregular features.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Automation & Control Systems
Xin Gu, Xiao Wang, Youjuan Ma, Haokun Zhang, Jiaxin Lu, Keyang Wang, Huixia Liu
Summary: LSHM technology combines the advantages of laser shock microforming and impact hydroforming to improve thinning at the fillet area and achieve maximum thinning at the bottom transition area. The area with the highest hardness is the bottom due to the coupling effect of high strain rate and plastic deformation on the increase in dislocation density. The controlling factors in the forming mechanism are primarily the ratio of material thickness to grain size N.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Automation & Control Systems
Xin Hou, Youjuan Ma, Xiao Wang, Wenkai Shen, Maomao Cui, Huixia Liu
Summary: In this paper, a new laser shock microforming method called laser shock sheet bulk microforging (LSSBMF) is proposed, combining the advantages of sheet bulk forming and laser shock microforming. The effects of grain size, thickness, and die geometry on the forming properties are investigated through experiments and numerical simulation. The results show that the grain size affects the forming depth and microhardness, and the die geometry and workpiece thickness influence the equivalent plastic stress and forming depth.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Martin Kraus, Marion Merklein
Summary: The global trend of product miniaturisation and functional integration is increasing the demand for metallic micro components. Research has shown that size effects occur during microforming, and reducing the grain size cannot eliminate these effects.
Review
Engineering, Multidisciplinary
C. Pradeep Raja, T. Ramesh
Summary: This article discusses the influence of different categories of size effects on the micro manufacturing process, including the impact of materials, process conditions, downsizing, and other parameters on the production of micro parts.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2021)
Article
Engineering, Manufacturing
Jun-Yuan Zheng, Hui Liu, Ming-Wang Fu
Summary: In this study, shafted microgears were manufactured using a microforming process. A grain-based modeling approach was used to simulate the forming process and investigate the effects of grain size on forming behavior and process performance. Five deformation zones with different hardness and stress-strain distributions were identified in the microstructures. The undesirable geometries of microgears, such as material unfilling, burr, and inclination, were observed and the inclination size increased with grain size. By redesigning the punch and adding a die insert, the forming quality of the microgears was improved.
ADVANCES IN MANUFACTURING
(2023)
Article
Automation & Control Systems
Chunjian Su, Mingyu Zhang, Hongxi Yang, Shipeng Lv, Xuemeng Li, Guosong Zhang, Yuting Lv, Shumei Lou, Rui Wang
Summary: This paper investigates the effect of isothermal local loading on the formability of AZ31B magnesium alloy, demonstrating the impact of different forming parameters on the forming limit angle, thinning rate, and grain size through experiments. Optimal forming temperature, tool head radius, feed rate, and initial plate thickness were identified, providing important insights for advanced manufacturing of high-performance alloy components.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Jilai Wang, Zhifei Xiao, Xin Wang, Yan Sun, Chaoyang Sun
Summary: This study investigates the progressive sheet forming of magnesium-lithium alloy sheets and predicts the ductile fracture behavior using a modified Gurson-Tvergaard-Needleman (GTN) damage model. The results show that increasing grain size deteriorates the forming defects.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
M. Du, B. Meng, Y. Z. Liu, F. Pan, M. Wan
Summary: Electrically assisted microforming has widespread benefits for high-performance microproducts. This research explores the coupled effect of microstructural size and pulsed current on flow characteristics of 304 stainless steel sheets. The findings suggest that strain hardening rate and deformation stress decrease during EA deformation, especially when current density exceeds 57.16 A/mm². Additionally, the impact of grain size on micro-scaled compression weakens with higher current density and plastic strain.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Mathematics, Interdisciplinary Applications
Tuncay Yalcinkaya, Izzet Ozdemir, Izzet Tarik Tandogan
Summary: This paper investigates the evolution of intergranular localization and stress concentration in three-dimensional micron-sized specimens through the Gurtin grain boundary model incorporated into a three-dimensional higher-order strain gradient crystal plasticity framework. The study addresses continuum scale dislocation-grain boundary interactions in polycrystalline metallic specimens, demonstrating the capabilities of the framework through 3D polycrystalline examples. Detailed grain boundary condition and stress concentration analyses are presented, discussing the advantages and disadvantages of the model with numerical examples.
COMPUTATIONAL MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Xuanyu Liu, Pingli Mao, Xiaoxu Wu, Le Zhou, Zhi Wang, Zheng Liu, Feng Wang
Summary: The adiabatic shear sensitivity of AZ31 magnesium alloys decreases with decreasing grain size, while the width of the adiabatic shear band (ASB) increases with decreasing grain size. A diffused shear band is formed in the forced shear region when the grain size is reduced to 3 μm. The microstructure in the forced shear region changes from equiaxed grains, to fine grains, and eventually to the matrix, reflecting a gradual variation in grain size. The microhardness of the ASB is significantly higher than that of the surrounding microstructure due to the presence of fine grains.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Guangchun Wang, Juanjuan Han, Yao Lin, Wei Zheng
Summary: This study investigates the impact of grain size and grain orientation on surface roughness by building polycrystalline models with rough surfaces. By introducing a scale parameter, the size effect of contact normal pressure under different grain sizes is determined. A prediction model for surface roughness in micro-forming considering size effect is established and validated for rationality and accuracy.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Geological
Angshuman Das, Pradipta Chakrabortty, Radu Popescu
Summary: This study investigated the effect of lumped particles on the liquefication resistance of sand through strain-controlled cyclic triaxial tests. The results showed that soil samples with lumps had lower cyclic resistance compared to clean sands, likely due to particle crushing and rearrangement. Therefore, the presence of soil lumps in cohesionless soil reduces the initial shear modulus and makes the soil more susceptible to liquefaction.
BULLETIN OF EARTHQUAKE ENGINEERING
(2021)
Article
Crystallography
Mingliang Men, Rui Zhao, Yizhe Liu, Min Wan, Bao Meng
Summary: The quality of filling micro-feature structures significantly affects the quality of forming micro-channels. The research focuses on the electrically driven micro-compression constitutive model of SUS304 stainless steels with different material properties for grain boundary and grain interior. By using an electrical-thermal-mechanical coupling model, the filling process is simulated, considering the effect of grain boundary and grain size. The simulation results showed good agreement with experimental results, demonstrating improved filling height for fine-grained materials.
Article
Nanoscience & Nanotechnology
A. Dhal, S. K. Panigrahi, M. S. Shunmugam
Summary: Fabricating large aspect-ratio and complex-shaped microparts is challenging due to size effect caused by similar deformation and microstructural length scales during microforming. This study investigates the influence of alloy chemistry, grain boundary engineering, and crystallographic texture on microformability by processing three grades of Al with distinctive microstructures. Ultrafine grained (UFG) and fine grained (FG) microstructures show superior microformability compared to coarse grained (CG) microstructure in pure Al. However, UFG and FG Al alloys suffer from increased strain localization due to solute clouds and nanoprecipitates, while a composite texture is detrimental to their microformability.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Automation & Control Systems
Wei Fang, Mingyu Fu, Lianyu Zheng
Summary: This paper introduces a multi-sensor based wearable system for real-time and accurate ergonomics analysis during manual assembly operations. By continuously tracking worker's posture, it can identify potential ergonomic injuries and provide objective indicators for assessing ergonomics.
ASSEMBLY AUTOMATION
(2022)
Article
Chemistry, Applied
Chunjing Su, Zhi Li, Mengqi Mao, Wenhua Ye, Jinping Zhong, Quanming Ren, Hairong Cheng, Haomin Huang, Mingli Fu, Junliang Wu, Yun Hu, Daiqi Ye, Haihong Xu
Summary: This study synthesized Pd/quasi-Ce-BTC catalyst by simple one-step pyrolysis and applied it in the oxidation of toluene, showing excellent catalytic activity. Microscopic analysis revealed the formation of a carbon matrix composite quasi-MOF structure interface. The results demonstrated that the amorphous carbon matrix significantly enhanced the adsorption and activation capacity of toluene in the reaction, creating a reductive system that facilitated the activation and utilization of oxygen. In-situ XPS analysis confirmed the involvement of the carbon matrix in oxygen activation and storage, with Pd0 identified as the crucial active site. Stability and water resistance tests indicated the good stability of Pd/quasi-Ce-BTC. This study provides a potential method for the development of quasi-MOF catalysts for effective VOCs abatement.
JOURNAL OF RARE EARTHS
(2022)
Article
Automation & Control Systems
Mingyu Fu, Lulu Wang
Summary: This paper proposes an event-triggered-based finite-time cooperative path following control scheme for underactuated marine surface vehicles. By utilizing a finite-time extended state observer and a guidance law based on velocity estimation values, cooperative control of multiple paths is achieved.
ASIAN JOURNAL OF CONTROL
(2023)
Article
Environmental Sciences
Minghui Fu, Chuanjiang Liu, Yuting Ma, Liukun Wang
Summary: This study examines the effects of city public service distance on the sense of gain to public health service (SGPHS) of migrant workers. It finds a nonlinear relationship and provides valuable insights for the formulation of rational public service policies.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Engineering, Environmental
Xiaolan Zhang, Yuhao Bi, Minghui Fu, Xinyu Zhang, Bingli Lei, Xin Huang, Zhenzhen Zhao
Summary: The distribution and removal efficiency of organophosphate ester pollutants vary in water sources and treatment facilities. Some of these esters pose limited ecological risks while others may have potential health implications.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Chemistry, Physical
Xuefeng Shi, Xiaomai Chen, Longwen Chen, Jialing Wang, Huanyi Li, Mengqi Mao, Mingli Fu, Daiqi Ye, Zhiguo Jing, Junliang Wu
Summary: Two Ag/CeO2 catalysts were prepared using different methods, and their activity in toluene oxidation with ozone was compared. The results showed that the different loading methods resulted in different interactions between Ag and CeO2, which affected the amount of surface and bulk oxygen vacancy. Surface oxygen vacancy was found to play a key role in the ozone catalytic oxidation of toluene.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Manufacturing
Jun-Yuan Zheng, Hui Liu, Ming-Wang Fu
Summary: In this study, shafted microgears were manufactured using a microforming process. A grain-based modeling approach was used to simulate the forming process and investigate the effects of grain size on forming behavior and process performance. Five deformation zones with different hardness and stress-strain distributions were identified in the microstructures. The undesirable geometries of microgears, such as material unfilling, burr, and inclination, were observed and the inclination size increased with grain size. By redesigning the punch and adding a die insert, the forming quality of the microgears was improved.
ADVANCES IN MANUFACTURING
(2023)
Article
Biochemistry & Molecular Biology
Jiahao Liang, De Wang, Xin Li, Weiwen Huang, Chun Xie, Minghui Fu, Hongmei Zhang, Qiong Meng
Summary: In this study, 47 full-length HbTPS genes were identified in the Hevea brasiliensis genome, and they were divided into five subfamilies based on phylogenetic analysis. HbTPSs were found to participate in cellular components, molecular functions, and biological processes, as well as seven secondary metabolite pathways. They may be regulated by phytohormones, as suggested by the presence of cis-acting elements. RNA-Seq analysis revealed tissue-specific expression patterns of different HbTPSs. These findings contribute to understanding the role and molecular mechanism of HbTPSs and the regulation of terpenoid biosynthesis in H.brasiliensis.
BIOCHEMICAL GENETICS
(2023)
Article
Engineering, Environmental
Wuwan Xiong, Linhui Liu, Anqi Guo, Dongdong Chen, Yulong Shan, Mingli Fu, Junliang Wu, Daiqi Ye, Peirong Chen
Summary: An economical and sustainable approach for synthesizing SSZ-13 zeolites, key materials for reducing nitrogen oxides (NOx) in automotive exhausts and selective methane conversion, has been reported. The approach involves recycling and reusing waste liquids containing the organic structure-directing agent (OSDA). The waste liquid-derived SSZ-13 zeolites show similar properties to conventionally synthesized ones.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Plant Sciences
Y. Li, H. Han, M. Fu, X. Zhou, J. Ye, F. Xu, W. Zhang, Y. Liao, X. Yang
Summary: This study analyzed the characteristics and expression patterns of the NAC transcription factor family in Ginkgo biloba using bioinformatics and quantitative reverse transcription PCR. The results showed that NAC transcription factors play important roles in plant growth and development, as well as in response to abiotic stresses and flavonoid biosynthesis in Ginkgo biloba.
Article
Chemistry, Physical
Bangfen Wang, Xiufeng Li, Yuhai Sun, Hailin Xiao, Mingli Fu, Shuhua Li, Hong Liang, Zhiwei Qiao, Daiqi Ye
Summary: Pt/CeO2 catalysts were modified with non-thermal plasma to enhance the catalytic activity for toluene oxidation. The plasma treatment affected the Pt particle size, CeO2-rod length, oxygen vacancy concentration, and Pt/CeO2 reducibility. The impact of plasma on Pt atoms was more significant than on oxygen vacancies.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Bangfen Wang, Ni Wang, Yuhai Sun, Hailin Xiao, Mingli Fu, Shuhua Li, Hong Liang, Zhiwei Qiao, Daiqi Ye
Summary: This study applied a dielectric barrier discharge plasma to modify the performance of Pt/CeO2 catalyst for toluene oxidation. Different plasma discharge times were used and it was found that discharge time significantly affected the catalytic activity of Pt/CeO2 catalyst. The Pt/CeO2-PT3 (30 min) and Pt/CeO2-PT6 (3 h) catalysts showed improved catalytic activity, while the Pt/CeO2-PT5 (2 h) catalyst exhibited decreased activity due to surface carbon deposition.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Jingshu Cui, Xiaojun Niu, Dongqing Zhang, Jinling Ma, Xifen Zhu, Xiaoxian Zheng, Zhang Lin, Mingli Fu
Summary: A novel flocculation strategy using chitosan-amphoteric starch (C-A) dual flocculants was proposed for simultaneously removing Microcystis aeruginosa and algal organic matter (AOM), providing new insights for harmful algal bloom control in an efficient, cost-effective and ecologically friendly way.
CARBOHYDRATE POLYMERS
(2023)
Review
Materials Science, Multidisciplinary
Mingming Fu, Yifeng Shen, Hao Zhou, Xiaojia Liu, Wenjun Chen, Xing Ma
Summary: Gallium-based liquid metals have unique properties that have attracted significant interest in the biomedical field. Photothermal therapy has shown great development in antitumor treatment and the photothermal capability of gallium-based liquid metals provides unparalleled advantages. This review presents the major preparation methods of liquid metal micro/nanoparticles, the mechanism of liquid metal photothermal conversion, and discusses the factors affecting the photothermal properties of liquid metals. The biological applications, challenges, and opportunities for the clinical translation of liquid metals in biomedical applications are also discussed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Ling Lin, Shanshan Liu, Zhangwei Chen, Yan Xia, Juanjuan Xie, Mingqiang Fu, Danbo Lu, Yuan Wu, Huali Shen, Pengyuan Yang, Juying Qian
Summary: Dilated cardiomyopathy (DCM) is characterized by left ventricular dilatation and contractile dysfunction, and its molecular mechanisms are not fully understood. This study examined the transcriptome and proteome of healthy and DCM myocardial tissue, identifying dysregulated processes such as extracellular matrix, mitochondrial function, and muscle contraction. Furthermore, a 4-biomarker panel (CTSB, vWF, C9, and MFGE8) was developed for the diagnosis of DCM.
