A5102710889- Microstructure and mechanical properties
- Aluminum Alloy Microstructure Properties
- Aluminum Alloys Composites Properties
- Electric Vehicles and Infrastructure
- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- Microstructure and Mechanical Properties of Steels
- Advanced materials and composites
- Metal Forming Simulation Techniques
- Advanced machining processes and optimization
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Robotic Path Planning Algorithms
- Mechanical Engineering and Vibrations Research
- Organizational Leadership and Management Strategies
- Surface Treatment and Residual Stress
- Distributed Control Multi-Agent Systems
- Advanced Welding Techniques Analysis
- Mechanics and Biomechanics Studies
- Laser and Thermal Forming Techniques
- Metal Alloys Wear and Properties
- Textile materials and evaluations
- RFID technology advancements
- Image and Object Detection Techniques
- Additive Manufacturing and 3D Printing Technologies
- Job Satisfaction and Organizational Behavior
Northwestern Polytechnical University
2020-2023
Jiangsu University
2023
Henan University of Science and Technology
2017-2022
Tiangong University
2019-2022
National University of Defense Technology
2015-2020
Ministry of Industry and Information Technology
2020
Shandong University
2010
The present work investigates the Zr-containing precipitate evolution and its effect on mechanical properties of a Cu–Cr–Zr alloy after solution treatment at 1253 K for 2 h aging 763 0–6 h. results show that precipitation sequence precipitates in is supersaturated solid solution→Zr-rich atomic clusters→Cu5Zr phase. Zr atoms first segregate {111} crystal plane copper form coherent Zr-rich clusters during process, which are composed monolayers exhibit plate-shaped. Some transformed into more...
The evolution of the mechanical characteristics, residual stresses, and microstructure a Cu–Fe–P alloy during machining was investigated, influence mechanism on stress strength confirmed. findings suggest that tensile strength, transverse direction (TD), rolling (RD) stresses in cold-rolled state are 516 MPa, −80 MPa −36 respectively, which 76.1%, 93.8%, 72.2% higher than those hot-rolled state, respectively. In addition, after annealing at high temperatures, TD, RD decreased to 344 −9 −24...
In this paper, the prepared Cu-0.25Cr alloy and Cu-0.25Cr-0.03Ti strips were treated with aging at 490 °C for different holding time. The electrical conductivity yield strength of tested. morphology, size, spacing phase structure Cr-rich precipitates in copper matrix observed by TEM. results show that evolution rule is as follows: supersaturated solid solution→G. P region (Cr atom-rich region)→ fcc structure→Cr-rich ordered bcc structure. peak aged consist precipitates. 93.5%IACS 178 MPa,...
The present work aims to systematically investigate the influence of P content on microstructure and texture evolution oxygen-free copper during intermediate annealing final cold rolling. were studied by electron backscattered diffraction transmission microscopy. With addition P, grains refined a large fraction low angle grain boundaries (LAGBs) emerged after annealing. transformed from pure metal type for Cu α-fiber which included brass Goss as was added. recrystallization temperature...
The influence mechanism of tensile stress and annealing on the strength residual C19400 alloy is proved. results show that after at 100 °C under 35 MPa stress, 428.2 MPa, TD RD stresses are −2 −8 respectively, which 94.4% 87.9% lower than untreated state. This treatment can significantly reduce while maintaining its original strength. main factor affecting interaction between precipitates dislocations. Interestingly, has not no obvious relationship with overall texture strength, but...
This paper studies the problem of planning collision-free dynamically feasible trajectories for a team autonomous unmanned aerial vehicles (UAVs) in real-time, where UAVs try to fly through complex 3-D environment reach their specified destinations. First, cooperative trajectory is mathematically formulated as decentralized receding horizon optimal control (DRH-OCP). Second, coordination strategy multi-vehicle real-time designed by effectively combining benefits inverse dynamics optimization...
Purpose The study examined the influence of internal marketing orientation on employees’ innovative behaviour through mediating role workforce agility and moderating psychological empowerment. Design/methodology/approach We collected 731 valid responses from frontline employees in hospitality industry Ghana. data were analysed using hierarchical regression analysis SPSS. Findings findings show that significantly influenced behaviour. Also, employee Again, found partially mediated...
With the development of mobile Internet technology, location technology is becoming a new research focus, and widely used in hospitals, airports, shopping malls other large indoor places. This paper focuses on based wifi presents common main algorithm framework current location. A WIFI proposed relevant experiments are designed. The experimental data fully analyzed, analysis parameter variation factor given.
To realize a one-sided stitching action and stable stitch formation, poor match between the lead hook yarn needles in process must be avoided as it can to dropping errors, causing loop loss, thread breaking, even relaxing. Based on an analysis of principle matching needles, original technology is improved method trajectory superposition proposed. A yarn-pulling mechanism designed for device three-dimensional preformed carbon/carbon composites. By analyzing mechanism, mathematical model that...
Recent research has shown that, during integrated piercing, the yarn tension can displace needles from centers of holes in piercing template. To reduce damage done to needle tips when and hole walls collide displacement is too large, this paper proposes a method for optimizing shape that satisfies strength constraint while targeting minimum displacement. First, optimal objective function conditions tip puncture are established, which affected by many factors. Then, feature selection machine...
The purpose of this paper is to ascertain the meshing point position cycloidal-pin wheel, which basis studying transmission performance RV(Rotate Vector) reducer in robot.In terms general theoretical tooth profile equation cycloid gear RV , space motion relationship wheel analyzed.Finally, accurate points positions standard and modified at any angle under no load are obtained by means contact analysis(TCA).The results prove theories drive provide support for actual analysis planetary transmission.
Bending of carbon fibers around the needle during integrated piercing process for preparing cloth preforms was analyzed. The mechanical behavior under moving steel tip investigated using well established mathematical models fiber bending and elongation interaction between needle. Based on analysis puncture fabric by tip, four equations satisfying morphology were selected, then particle swarm algorithm used to optimize curve tip. Curves pressure, horizontal tension due frictional resistance...
Abstract In the present study, fiber-bending around needle during piercing process of carbon fabric is investigated. this regard, a mathematical model established to investigate bending elongation fiber and interaction between tip. Then mechanical behavior when moving down tip steel analyzed. Based on performed analysis, shape curve equation that satisfies puncture established. Furthermore, influence different shapes The performance subjected loads, including template, horizontal tension...
The use of workflow is a complicated process and non-specialist user need visualization platform for application. In this paper, graphical modeling design proposed. This provides complete solutions to application including definition, modeling, deployment, tracking navigation. According platform, an effective tool business realized. Firstly, interactive interface model constructed from node models, transition state models Secondly, Model-Driven Visualization Platform Business Process...