A5102708977- Advanced Welding Techniques Analysis
- Welding Techniques and Residual Stresses
- Aluminum Alloy Microstructure Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- High-Temperature Coating Behaviors
- Electric Motor Design and Analysis
- Industrial Technology and Control Systems
- Neural Networks and Applications
- Fault Detection and Control Systems
- Control Systems and Identification
- Superconducting Materials and Applications
- Smart Grid Security and Resilience
- Fatigue and fracture mechanics
- Network Security and Intrusion Detection
- Advanced Malware Detection Techniques
- Visual perception and processing mechanisms
- Metal Forming Simulation Techniques
- Fusion materials and technologies
- Non-Destructive Testing Techniques
- Medical Imaging and Analysis
- Physical Unclonable Functions (PUFs) and Hardware Security
- Anatomy and Medical Technology
- Virtual Reality Applications and Impacts
- Superconductivity in MgB2 and Alloys
Yunnan Normal University
2020-2023
Shanghai University of Engineering Science
2019-2020
Shanghai University
2017-2018
China Information Technology Security Evaluation Center
2017
Shanghai Research Institute of Materials
2017
Xidian University
2012
Center for Disease Control
2007
Shanghai Municipal Center For Disease Control Prevention
2007
In this paper, 6061-T6 aluminum alloy was welded by laser-MIG hybrid welding. The microstructures of the upper part weld center, lower and edge near fusion line in joint were analyzed. hardness mechanical properties joints analyzed detail. ratchet strain 6061 tested, asymmetric stress control method used to test joints. results show that ratcheting increases with increase average amplitude, has characteristics cyclic softening first then hardening. degree hardening maximum stress. Cyclic is...
Al–Zn–Mg alloy is widely used as lightweight material. Laser-arc hybrid welding considered to be a suitable joining process for aluminum alloy. In this paper, 3-mm-thick 7075 was welded by laser-arc method. The microstructure of the joint analyzed. Microhardness measurement and tensile test were conducted. fatigue base metal carried out. And feature crack initiation propagation discussed.
In this paper the MIG welding is used for high-speed train 6005-T6 aluminum alloy experiments. The microstructure, micro-hardness, tensile property and fatigue of base metal welded joint have been analyzed with optical microscopy (OM), micro-hardness machine, scanning electronic (SEM), test machine respectively. It was found that isometric crystals exist in welds. heat affected zone are bigger than metal's. width 25 mm. There softening because redissolution separating out strengthening...
In this paper, Al–Mg–Si alloy with the thickness of 2.5 mm was overlap welded by fiber laser. Optical microscopy, scanning electron energy dispersive spectroscopy, hardness tester, and electro-hydraulic servo testing machine were used for microstructure observation mechanical property examination. Specimens extracted from plates tested at room temperature determination tensile fatigue properties joints. Results showed columnar grains formed in fusion boundary, while equiaxed zone; lowest...
For a 2.4 MW high-temperature superconducting (HTS) motor, rotating cold mass support with good strength and stiffness was required. In this research, arch-shaped ultimately suggested by the performance of strength, deformation, thermal leakage, manufacturability. The support, which made Glass-Fiber Reinforced Plastic (GFRP), had capability for resisting multiple physical field loads heat insulation at same time. Tests were carried out proved that compressive could reach 322.85 MPa average...
An aluminium/steel CMT-welded joint is mainly composed of fusion zone (FZ), interfacial intermetallic compound (IMC) zone, and heat-affected (HAZ). IMC FZ are the weakest link in welded joint. The fatigue fracture indicates that lattice distortion caused by mismatch Fe2Al5 Fe more likely to engender dislocation slipping cracks easily nucleate during testing. hysteresis loop shifted right, which indicating specimen experiences a ratcheting effect. In high-stress condition, cyclic hardening...
With the rapid development of information security technology, Network Based Intrusion Protecting Devices(NIPD), like firewall and NIDS, holding function detecting blocking network attacks, have become primary guard critical infrastructure, significantly reduced threat attack. Regarding these features, attackers are continuously pursuing efficient ways for obfuscating attack behaviors to evade from mechanism NIPD. Once NIPD deployed in boundary is found vulnerable, malicious can bypass it...
A novel multi-signal based identification approach is presented for the neuro-fuzzy Wiener model with process noise. combined composed of two random signals different amplitude adopted to solve problem nonlinear block separated from linear part. Then least square method employed identify nonlinearity model. Next, parameters are obtained by using recursive on auxiliary Finally, an example used verify effectiveness proposed method.
In this paper, 6013 aluminum alloy with the thickness of 2.5mm was overlap welded by fiber laser. The microstructure, mechanical properties and fracture morphology joint tested observed Optical Microscope, material testing machines Scanning Electron thus failure mechanism are analyzed. results showed that good shape weld achieved under optimal welding parameters. Equiaxial as-cast microstructures exist in center columnar grains formed near fusion line WZ. hardness zone is lowest joint, which...
The complex microstructures of stainless steel (SS) cladding on low alloy (LAS) joint and the corrosion behavior in high temperature water environments were examined. Scanning electron microscopy, focused ion beam, transmission microscope Raman spectroscopy used. heat-affected zone (HAZ) was mainly comprised pearlite ferrite, while HAZ austenite ferrite. divided into overheated crystal region, complete recrystallization region incompletely region. A decarburization side a carbon-enriched...