A5101883343- Advanced Welding Techniques Analysis
- Welding Techniques and Residual Stresses
- Titanium Alloys Microstructure and Properties
- Aluminum Alloy Microstructure Properties
- Metal Forming Simulation Techniques
- Tribology and Lubrication Engineering
- Aluminum Alloys Composites Properties
- Mechanical stress and fatigue analysis
- Surface Treatment and Residual Stress
- Engineering Structural Analysis Methods
- Additive Manufacturing and 3D Printing Technologies
- Electronic Packaging and Soldering Technologies
- Non-Destructive Testing Techniques
- Laser and Thermal Forming Techniques
- Hydraulic and Pneumatic Systems
- Intermetallics and Advanced Alloy Properties
- Dynamics and Control of Mechanical Systems
- Additive Manufacturing Materials and Processes
- Vehicle Dynamics and Control Systems
- Real-time simulation and control systems
- Advanced Neural Network Applications
- High Temperature Alloys and Creep
- Engineering Diagnostics and Reliability
- Electromagnetic Launch and Propulsion Technology
- Structural Load-Bearing Analysis
Xi'an University of Technology
2025
Jiangsu University of Science and Technology
2025
Central South University
2023-2024
Harbin Institute of Technology
2009-2024
Southwest University
2013-2024
Toronto Metropolitan University
2018
China University of Petroleum, Beijing
2017
Lanzhou Petrochemical Polytechnic
2007
2319 aluminum alloy parts was prepared by wire arc additive manufacturing technology. The corrosion properties of additively manufactured and 2219 sheets were systematically investigated electrochemical tests localized tests. results showed that the sheet has a lower current density than alloy. Localized test indicated exhibited higher intergranular depth more severe morphology sheet. This suggests resistance poor could be attributed to formation coarse continuous Al2Cu phase along grain...
To obtain accurate residual stresses in linear friction welding of TC17 alloy, a numerical relationship between the elastic constants and phase fraction alloy was established. The with gradient distribution were obtained by combining introduced into contour method. results show that are positively correlated α present significant area width about 4 mm. relative error calculating can be up to 36.06% if is ignored. corrected exhibit bimodal distribution, peak stress ∼442 MPa located at edge...
ABSTRACT Considering that the pancreas occupies a very small proportion of abdominal organs and varies in size, shape, position, U‐Net encounters challenges related to intra‐class inconsistency inter‐class indistinction pancreatic segmentation tasks. To address these issues, this paper proposes method based on multi‐stage attention enhanced effectively leverage feature information at each stage architecture. In particular, during encoding phase U‐Net, triple is utilized capture dependencies...
The high-performance alloy, 304 stainless steel, is widely used in various industries. However, its material properties lead to severe tool wear during milling processes, significantly increasing force and adversely impacting machining quality efficiency. Consequently, an accurate milling-force model crucial for guiding the formulation optimization of parameters. This paper presents a prediction steel that incorporates effect wear, based on mechanistic modeling approach. Side-milling...
Lightweight structural applications of magnesium and aluminum alloys inevitably necessitate welding joining, especially dissimilar between these alloys. The objective this study was to examine the feasibility joining ZEK100 Mg alloy Al6022 via ultrasonic spot welding, focusing on effects energy. An interface diffusion layer consisting α-Mg Al12Mg17 eutectic structure observed form, with its thickness increased from ~0.5 µm ~30 increasing energy 500 J 2000 J. tensile lap shear peak load or...
The aim of this study was to identify and analyze the fatigue fracture characteristics dissimilar Al 6061 Cu (UNS C11000) lap joints made with ultrafast electromagnetic pulse welding (EMPW) via fractography, stress analysis finite element simulation. It observed that EMPW generated an annular (or ring-shaped) bonding area, weld zones a central non-weld zone when viewed from cross section. Two types failure modes occurred in relation cyclic loading levels: base metal or transverse...
This study investigated the fatigue properties and interfacial strengthening mechanisms of Al6061-to-Cu dissimilar welded joints via electromagnetic pulse welding (EMPW). The load-bearing capacity at discharge voltages 14 kV 16 was superior to that 12 kV. Meanwhile, life one order magnitude higher than SEM observation on fracture surface shows typical “tire-mark” striation just appeared joint, indicating ductility for handling more extended plastic deformation. high EBSD acquisition achieved...
This study aimed to investigate the fatigue performance and interfacial strengthening mechanisms of Al6061-to-Cu dissimilar lap joints via electromagnetic pulse welding (EMPW). The load-bearing capacity at discharge voltages 14 kV 16 was superior that 12 kV. Furthermore, life one order magnitude higher compared joints. SEM observation fracture surface revealed presence typical "tire-mark" striations only in joint, indicating ductility ability withstand extended plastic...
Microstructural variations of joints occur in linear friction welding, resulting inhomogeneous mechanical properties that affect the development residual stress. The mathematical models for elastic moduli and yield strength Ti17 were firstly developed to obtain joints. Then, influence on stress prediction was investigated. results show finite element model considering accurately captures bimodal distribution location peak Numerically, values are ∼662 ∼194 MPa along direction oscillation...
The tie-bolt fastened rotor which is assembled by rods distributed circumferentially modeled and analyzed finite element method with the consideration of elastic-plastic contact between discs. Based on model an elastic hemisphere a rigid plane, discs investigated statistical rough surfaces, stiffness derived. equivalent bending acquired. With increase load two difference purely compared. obtained stiffness, equation motion for system formed critical speeds are calculated. It indicates that...
Thermal stress is one of the most important monitoring parameters in turbine rotors during transition work conditions. It has significant influence on safety and life rotors. In order to obtain thermal process conveniently, transient heat conduction typical structures analyzed based equation finite element simulation. According thermomechanical principle, distributions rotor are investigated. The solutions a solid cylinder derived. A corner formed by shaft disc modeled method, influences...
Residual stresses with a complex distribution are generated after linear friction welding, which affects the service performance of weldment. In this work, numerical model for linear-friction-welded Ti17 (Ti-5Al-2Sn-2Zr-4Mo-4Cr) was developed to investigate evolution residual and effect welding parameters on stresses. Additionally, method predicting internal constructed. The results indicate that near contact interface largest in oscillatory direction, peaking at ~661 MPa 2 mm away from...
The axial mechanical behaviors of the bolted joint are a primary concern structures. load position has obvious influence on with different materials, while it can not be considered by analytical method yet. objective this work is to fill gap. With pressure cone assumption, resilience stress zones derived, and detailed formulation introduction factor proposed. behavior subjected external formulated compared finite element analysis. Results show that distance between planes apparent joint. In...
Tighten force has much influence on tie-bolt fastened rotor dynamics. Temperature distribution in results thermal expansion of and rods. The difference between rods causes the variation bolt load. With considering contact conductance, model was established by finite element method axial temperature obtained. influences surface roughness, nominal pressure position were analysed. Based rotor, tighten investigated. Results show that pressure, roughness arrange have different with temperature.