Articles

Hot Extrusion Processing of Al–Li Alloy Profiles and Related Issues: A Review

Al–Li alloy is a new structural material with the advantages of lightweight and high strength. The extrusion profiles of Al–Li alloy are widely used in aerospace and other fields, which can significantly reduc...

Authors: Yongxiao Wang and Guoqun Zhao

Design of Vegetable Pot Seedling Pick-up Mechanism with Planetary Gear Train

It has been challenging to design seedling pick-up mechanism based on given key points and trajectories, because it involves dimensional synthesis and rod length optimization. In this paper, the dimensional sy...

Authors: Zhipeng Tong, Gaohong Yu, Xiong Zhao, Pengfei Liu and Bingliang Ye

A Survey of Mathematical Tools in Topology and Performance Integrated Modeling and Design of Robotic Mechanism

Topology and performance are the two main topics dealt in the development of robotic mechanisms. However, it is still a challenge to connect them by integrating the modeling and design process of both parts in...

Authors: Xinming Huo, Shuofei Yang, Binbin Lian, Tao Sun and Yimin Song

Parallel Distributed Compensation /H_∞ Control of Lane-keeping System Based on the Takagi-Sugeno Fuzzy Model

Current research on lane-keeping systems ignores the effect of the driver and external resistance on the accuracy of tracking the lane centerline. To reduce the lateral deviation of the vehicle, a lane-keeping...

Authors: Wuwei Chen, Linfeng Zhao, Huiran Wang and Yangcheng Huang

Combined Prediction for Vehicle Speed with Fixed Route

Achieving accurate speed prediction provides the most critical support parameter for high-level energy management of plug-in hybrid electric vehicles. Nowadays, people often drive a vehicle on fixed routes in ...

Authors: Lipeng Zhang, Wei Liu and Bingnan Qi

Temperature Field Simulation and Experimental Study of Anti-backlash Single-Roller Enveloping Hourglass Worm Gear

In gear transmission, temperature rise has a non-negligible impact on the accuracy, noise and transmission efficiency. However, there is no relevant research on the temperature rise of the anti-backlash single...

Authors: Shisong Wang, Shike Wang, Jie Wang and Xingqiao Deng

Intelligent Manufacturing Systems in COVID-19 Pandemic and Beyond: Framework and Impact Assessment

Pandemics like COVID-19 have created a spreading and ever-higher healthy threat to the humans in the manufacturing system which incurs severe disruptions and complex issues to industrial networks. The intellig...

Authors: Xingyu Li, Baicun Wang, Chao Liu, Theodor Freiheit and Bogdan I. Epureanu

Preparation of Nickel-Cobalt/Carborundum Carbide Composite Coatings by Supergravity Field-Enhanced Electrodeposition

Nickel-cobalt/silicon carbide (Ni-Co/SiC) composite coatings were fabricated by supergravity field-enhanced electrodeposition. The surface morphology and the distribution of the SiC particles in the coatings w...

Authors: Xiaoyun Hu and Ningsong Qu

Compound Impedance Control of a Hydraulic Driven Parallel 3UPS/S Manipulator

The hydraulic parallel manipulator combines the high-power density of the hydraulic system and high rigidity of the parallel mechanism with excellent load-carrying capacity. However, the high-precision traject...

Authors: Lihang Wang, Shaofei Cui, Chong Ma and Lijie Zhang

Formability of Materials with Small Tools in Incremental Forming

Single point incremental forming (SPIF) is an innovative sheet forming process with a high economic pay-off. The formability in this process can be maximized by executing forming with a tool of specific small ...

Authors: Hongyu Wei, G. Hussain, X. Shi, B. B. L Isidore, Mohammed Alkahtani and Mustufa Haider Abidi

Algebraic Method-Based Point-to-Point Trajectory Planning of an Under-Constrained Cable-Suspended Parallel Robot with Variable Angle and Height Cable Mast

To avoid impacts and vibrations during the processes of acceleration and deceleration while possessing flexible working ways for cable-suspended parallel robots (CSPRs), point-to-point trajectory planning dema...

Authors: Tao Zhao, Bin Zi, Sen Qian and Jiahao Zhao

Study on Cutting Force, Cutting Temperature and Machining Residual Stress in Precision Turning of Pure Iron with Different Grain Sizes

Pure iron is one of the difficult-to-machine materials due to its large chip deformation, adhesion, work-hardening, and built-up edges formation during machining. This leads to a large workpiece deformation an...

Authors: Yinfei Yang, Lu Jin, Jinpeng Zhu, Jinxing Kong and Liang Li

Dynamic Stiffness Analysis and Experimental Verification of Axial Magnetic Bearing Based on Air Gap Flux Variation in Magnetically Suspended Molecular Pump

Current and displacement stiffness are important parameters of axial magnetic bearing (AMB) and are usually considered as constants for the control system. However, in actual dynamic work situations, time-vary...

Authors: Jinji Sun, Wanting Wei, Jiqiang Tang and Chun-E Wang

A Comparative Study of Fractional Order Models on State of Charge Estimation for Lithium Ion Batteries

State of charge (SOC) estimation for lithium ion batteries plays a critical role in battery management systems for electric vehicles. Battery fractional order models (FOMs) which come from frequency-domain mod...

Authors: Jinpeng Tian, Rui Xiong, Weixiang Shen and Ju Wang

Configuration Synthesis and Performance Analysis of 9-Speed Automatic Transmissions

Current research of automatic transmission (AT) mainly focuses on the improvement of driving performance, and configuration innovation is one of the main research directions. However, finding new configuration...

Authors: Huafeng Ding, Changwang Cai, Ziming Chen, Tao Ke and Bowen Mao

Design of a Passive Gait-based Ankle-foot Exoskeleton with Self-adaptive Capability

Propulsion during push-off is the key to realizing human locomotion. Humans have evolved a way of walking with high energy utilization, but it can be further improved. Drawing inspiration from the muscle-tendo...

Authors: Xiangyang Wang, Sheng Guo, Bojian Qu, Majun Song and Haibo Qu

Normal Force and Sag Resistance of Pipe Conveyor

Pipe belt conveyor is a new type of environmentally friendly and efficient bulk conveying equipment. In the design of the roller, the belt and the driving motor of pipe belt conveyor, the sag resistance is a k...

Authors: Shuaiping Guo, Wei Huang and Xuejun Li

Keep Healthcare Workers Safe: Application of Teleoperated Robot in Isolation Ward for COVID-19 Prevention and Control

Authors: Geng Yang, Honghao Lv, Zhiyu Zhang, Liu Yang, Jia Deng, Siqi You, Juan Du and Huayong Yang

Anomalies in Special Permutation Flow Shop Scheduling Problems

Recent researches show that there are some anomalies, which are not satisfied with common sense, appearing in some special permutation flow shop scheduling problems (PFSPs). These anomalies can be divided into...

Authors: Lin Gui, Liang Gao and Xinyu Li

Integrated Modelling of Microstructure Evolution and Mechanical Properties Prediction for Q&P Hot Stamping Process of Ultra-High Strength Steel

High strength steel products with good ductility can be produced via Q&P hot stamping process, while the phase transformation of the process is more complicated than common hot stamping since two-step quenchin...

Authors: Yang Chen, Huizhen Zhang, Johnston Jackie Tang, Xianhong Han and Zhenshan Cui

Dynamic Modeling and Analysis of 5-PSS/UPU Parallel Mechanism with Elastically Active Branched Chains

To study the characteristics of the 5-prismatic–spherical–spherical (PSS)/universal–prismatic–universal (UPU) parallel mechanism with elastically active branched chains, the dynamics modeling and solutions of ...

Authors: Yanbiao Li, Hang Zheng, Bo Chen, Peng Sun, Zesheng Wang, Kun Shuai and Yi Yue

Advanced Data Collection and Analysis in Data-Driven Manufacturing Process

The rapidly increasing demand and complexity of manufacturing process potentiates the usage of manufacturing data with the highest priority to achieve precise analyze and control, rather than using simplified ...

Authors: Ke Xu, Yingguang Li, Changqing Liu, Xu Liu, Xiaozhong Hao, James Gao and Paul G. Maropoulos

Progress in Bio-inspired Anti-solid Particle Erosion Materials: Learning from Nature but Going beyond Nature

Solid particle erosion is a common phenomenon in engineering fields, such as manufacturing, energy, military and aviation. However, with the rising industrial requirements, the development of anti-solid partic...

Authors: Shuaijun Zhang, Junqiu Zhang, Bin Zhu, Shichao Niu, Zhiwu Han and Luquan Ren

Remanufacturing Scheme Design for Used Parts Based on Incomplete Information Reconstruction

The different conditions of use of a component result in a variety of damage levels. Therefore, excluding differences in shape and size, used parts show a high degree of uncertainty regarding failure character...

Authors: Wenhao Huang, Zhigang Jiang, Teng Wang, Yan Wang and Xiaoli Hu

Improved Stiffness Modeling for An Exechon-Like Parallel Kinematic Machine (PKM) and Its Application

Hole drilling or contour milling for the large and complex workpieces such as automobile panels and aircraft fuselages makes a high combined demand on machining accuracy, stiffness and workspace of machining e...

Authors: Nanyan Shen, Liang Geng, Jing Li, Fei Ye, Zhuang Yu and Zirui Wang

Residual Stress Relaxation of Thin-walled Long Stringer Made of Aluminum Alloy 7050-T7451 under Transportation Vibration

Thin-walled long stringer made of aluminum alloy 7050-T7451 is prone to deformation during transportation, so a research of residual stress relaxation was launched in this paper. The transport resonance stress...

Authors: Yinfei Yang, Lu Jin, Jixing Du, Liang Li and Wei Yang

SHUYU Robot: An Automatic Rapid Temperature Screening System

Authors: Zhao Gong, Songwen Jiang, Qizhi Meng, Yanlei Ye, Peng Li, Fugui Xie, Huichan Zhao, Chunzhe Lv, Xiaojie Wang and Xinjun Liu

Effect of Agitator’s Types on the Hydrodynamic Flow in an Agitated Tank

The aim of this paper is to study the effect of agitator’s types on the turbulent flows in stirred tanks without and with baffles. The hydrodynamics behavior induced by four different agitator’s types: a Rusht...

Authors: Mohammed Foukrach, Mohamed Bouzit, Houari Ameur and Youcef Kamla

Structural Stress–Fatigue Life Curve Improvement of Spot Welding Based on Quasi-Newton Method

∆F-N curves are usually used to predict the fatigue life of spot welding in engineering, but they are time-consuming and laborious and not universal. For the purpose of predicting the fatigue life of spot weld...

Authors: Yahang Qin, Shoune Xiao, Liantao Lu, Bing Yang, Xiangjie Li and Guangwu Yang

Regulation Method for Torque–Angle Characteristics of Rotary Electric–Mechanical Converter Based on Hybrid Air Gap

The torque–angle characteristics of electric–mechanical converters are important determinants of the quality of electrohydraulic proportional control systems. It is far more difficult for a rotary electric–mec...

Authors: Bin Meng, Yongjiang Lai and Xinguo Qiu

Running-In Behavior of Wet Multi-plate Clutches: Introduction of a New Test Method for Investigation and Characterization

Wet multi-plate clutches are relevant components of modern drivetrain applications, not only in terms of function but also safety and comfort. Especially at the beginning of their lifetime, distinct changes of...

Authors: Katharina Voelkel, Hermann Pflaum and Karsten Stahl

Effect of Trace Addition of Ceramic on Microstructure Development and Mechanical Properties of Selective Laser Melted AlSi10Mg Alloy

Selective laser melting (SLM) is an emerging additive manufacturing technology for fabricating aluminum alloys and aluminum matrix composites. Nevertheless, it remains unclear how to improve the properties of ...

Authors: Yuxin Li, Dongdong Gu, Han Zhang and Lixia Xi

Ocean Observation Technologies: A Review

Covering about three quarters of the surface area of the earth, the ocean is a critical source of sustenance, medicine, and commerce. However, such vast expanse in both surface area and depth, presents myriad ...

Authors: Mingwei Lin and Canjun Yang

Fiber Traction Printing: A 3D Printing Method of Continuous Fiber Reinforced Metal Matrix Composite

A novel metal matrix composite freeform fabrication approach, fiber traction printing (FTP), is demonstrated through controlling the wetting behavior between fibers and the matrix. This process utilizes the fi...

Authors: Xin Wang, Xiaoyong Tian, Qin Lian and Dichen Li

Analysis of Power Matching on Energy Savings of a Pneumatic Rotary Actuator Servo-Control System

When saving energy in a pneumatic system, the problem of energy losses is usually solved by reducing the air supply pressure. The power-matching method is applied to optimize the air-supply pressure of the pne...

Authors: Yeming Zhang, Hongwei Yue, Ke Li and Maolin Cai

Research and Development of Electro-hydraulic Control Valves Oriented to Industry 4.0: A Review

Electro-hydraulic control valves are key hydraulic components for industrial applications and aerospace, which controls electro-hydraulic motion. With the development of automation, digital technology, and com...

Authors: Bing Xu, Jun Shen, Shihao Liu, Qi Su and Junhui Zhang

Numerical Investigation on Fracture Initiation Properties of Interface Crack in Dissimilar Steel Welded Joints

Fracture toughness property is of significant importance when evaluating structural safety. The current research of fracture toughness mainly focused on crack in homogeneous material and experimental results. ...

Authors: Longfei Zhao, Chendong Shao, Yasuhito Takashima, Fumiyoshi Minami and Fenggui Lu

Prediction of Leakage from an Axial Piston Pump Slipper with Circular Dimples Using Deep Neural Networks

Oil leakage between the slipper and swash plate of an axial piston pump has a significant effect on the efficiency of the pump. Therefore, it is extremely important that any leakage can be predicted. This stud...

Authors: Özkan Özmen, Cem Sinanoğlu, Abdullah Caliskan and Hasan Badem

An Overview of Bearing Candidates for the Next Generation of Reusable Liquid Rocket Turbopumps

There is a consensus in the aerospace field that the development of reusable liquid rockets can effectively reduce the launch expense. The pursuit of a long service life and reutilization highly depends on the...

Authors: Jimin Xu, Changhuan Li, Xusheng Miao, Cuiping Zhang and Xiaoyang Yuan

Experimental Research on the Dynamic Lubricating Performance of Slipper/Swash Plate Interface in Axial Piston Pumps

The interface between the slipper/swash plate is one of the most important frication pairs in axial piston pumps. The test of this interface in a real pump is very challenging. In this paper, a novel pump prot...

Authors: Junjie Zhou, Jichen Zhou and Chongbo Jing

Mass-Spring-Damping Theory Based Equivalent Mechanical Model for Cylindrical Lithium-ion Batteries under Mechanical Abuse

An equivalent mechanical model with the equivalent physical meaning of mass-spring-damping is proposed for cylindrical lithium-ion batteries through experiments and theory. The equivalent mechanical model of a...

Authors: Wenwei Wang, Yiding Li, Cheng Lin and Sheng Yang

Discerning Weld Seam Profiles from Strong Arc Background for the Robotic Automated Welding Process via Visual Attention Features

In the robotic welding process with thick steel plates, laser vision sensors are widely used to profile the weld seam to implement automatic seam tracking. The weld seam profile extraction (WSPE) result is a c...

Authors: Yinshui He, Zhuohua Yu, Jian Li, Lesheng Yu and Guohong Ma

Surface Quality Improvement in Machining an Aluminum Honeycomb by Ice Fixation

A honeycomb structure is widely used in sandwich structure components in aeronautics and astronautics; however, machining is required to reveal some of its features. In honeycomb structures, deficiencies, such...

Authors: Yongqing Wang, Yongquan Gan, Haibo Liu, Lingsheng Han, Jinyu Wang and Kuo Liu

Dynamic Analysis and Performance Verification of a Novel Hip Prosthetic Mechanism

To assist an amputee in regaining his or her daily quality of life, based on analysis of the motion characteristics of the human hip, a 2-UPR/URR parallel mechanism with a passive limb was designed. The inverse k...

Authors: Majun Song, Sheng Guo, Xiangyang Wang and Haibo Qu

A Fast Multi-tasking Solution: NMF-Theoretic Co-clustering for Gear Fault Diagnosis under Variable Working Conditions

Most gear fault diagnosis (GFD) approaches suffer from inefficiency when facing with multiple varying working conditions at the same time. In this paper, a non-negative matrix factorization (NMF)-theoretic co-...

Authors: Fei Shen, Chao Chen, Jiawen Xu and Ruqiang Yan

Flow Resistance Modeling for Coolant Distribution within Canned Motor Cooling Loops

Taylor–Couette–Poiseuille (TCP) flow dominates the inner water-cooling circulation of canned motor reactor coolant pumps. Current research on TCP flow focuses on torque behaviors and flow regime transitions th...

Authors: Shengde Wang, Zhenqiang Yao and Hong Shen

Kinematic and Dynamic Analysis of a 3-PRUS Spatial Parallel Manipulator

Parallel Kinematic Machines (PKMs) are being widely used for precise applications to achieve complex motions and variable poses for the end effector tool. PKMs are found in medical, assembly and manufacturing ...

Authors: Mervin Joe Thomas, M. L. Joy and A. P. Sudheer

Progress in Thermomechanical Analysis of Friction Stir Welding

This article reviews the status of thermomechanical analysis of the friction stir welding (FSW) process for establishing guidelines for further investigation, filling the available research gaps, and expanding...

Authors: Bahman Meyghani and Chuansong Wu

Research Review of Principles and Methods for Ultrasonic Measurement of Axial Stress in Bolts

Bolts are important fasteners indispensable in the manufacturing field for their advantages, which include convenient assembly and disassembly, easy maintenance, refastenability to prevent looseness, and the a...

Authors: Qinxue Pan, Ruipeng Pan, Chang Shao, Meile Chang and Xiaoyu Xu

Automatic Scallion Seedling Feeding Mechanism with an Asymmetrical High-order Transmission Gear Train

The current automatic scallion-transplanting machine is a complicated mechanism composed of two linkage mechanisms and two band carriers. It delivers seedlings inefficiently because of the movement limitations...

Authors: Xiong Zhao, Jun Ye, Mengyan Chu, Li Dai and Jianneng Chen