Yiping Wu
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View article: Structural Design and Analysis of an Automated Cutting Device for a Grass Carp Product Based on SolidWorks
Structural Design and Analysis of an Automated Cutting Device for a Grass Carp Product Based on SolidWorks Open
When addressing the issue that the current market sales of fresh aquatic products, which are segmented into sections, mainly rely on manual operations, there are problems such as high labor intensity, low cutting efficiency, and uneven cut…
View article: Structure and Temperature Dependence of Solder Layer and Electric Parameters in IGBT Modules
Structure and Temperature Dependence of Solder Layer and Electric Parameters in IGBT Modules Open
IGBT high-power devices are subjected to various extreme working conditions for long periods and are affected by multiple loading conditions, inevitably leading to various aging and failure issues. Among them, the solder layer, as one of t…
View article: Development of a high-entropy alloy with both high corrosion resistance and hardness by data-driven intelligent design methods
Development of a high-entropy alloy with both high corrosion resistance and hardness by data-driven intelligent design methods Open
View article: Design and Optimization of W-Mo-V High-Speed Steel Roll Material and Its Heat-Treatment-Process Parameters Based on Numerical Simulation
Design and Optimization of W-Mo-V High-Speed Steel Roll Material and Its Heat-Treatment-Process Parameters Based on Numerical Simulation Open
W-Mo-V high-speed steel (HSS) is a high-alloy high-carbon steel with a high content of carbon, tungsten, chromium, molybdenum, and vanadium components. This type of high-speed steel has excellent red hardness, wear resistance, and corrosio…
View article: Simulation and Assessment of Thermal-Stress Analysis of Welding Materials in IGBT
Simulation and Assessment of Thermal-Stress Analysis of Welding Materials in IGBT Open
Insulated gate bipolar transistors (IGBTs), as an important power semiconductor device, are susceptible to thermal stress, thermal fatigue, and mechanical stresses under high-voltage, high-current, and high-power conditions. Elevated heat …
View article: Pressureless Immersion of Epoxy Resin-Filled Cracks in Faulted Rock Materials
Pressureless Immersion of Epoxy Resin-Filled Cracks in Faulted Rock Materials Open
Epoxy resin, known for its excellent corrosion resistance, water resistance, and high-temperature resistance, is extensively utilized in construction and water-related projects. Within water conservancy projects, natural factors such as wa…
View article: Thermal Fatigue Failure of Micro-Solder Joints in Electronic Packaging Devices: A Review
Thermal Fatigue Failure of Micro-Solder Joints in Electronic Packaging Devices: A Review Open
In electronic packaging products in the service process, the solder joints experience thermal fatigue due to temperature cycles, which have a significant influence on the performance of electronic products and the reliability of solder joi…
View article: The Effect of Epoxy Resin on the Infiltration of Porous Metal Parts Formed through Laser Powder Bed Fusion
The Effect of Epoxy Resin on the Infiltration of Porous Metal Parts Formed through Laser Powder Bed Fusion Open
Laser powder bed fusion (L-PBF) additive manufacturing technology can print multi-material parts with multiple functions/properties, and has great potential for working in harsh application environments. However, the metal blank formed by …
View article: Design and Optimization of Heat Treatment Process Parameters for High-Molybdenum-Vanadium High-Speed Steel for Rolls
Design and Optimization of Heat Treatment Process Parameters for High-Molybdenum-Vanadium High-Speed Steel for Rolls Open
High-molybdenum-vanadium high-speed steel is a new type of high-hardenability tool steel with excellent wear resistance, castability, and high-temperature red hardness. This paper proposes a composition design of high-molybdenum-vanadium h…
View article: Research on Characterization of Nylon Composites Functional Material Filled with Al2O3 Particle
Research on Characterization of Nylon Composites Functional Material Filled with Al2O3 Particle Open
This study revolves around the issues raised by the current semiconductor device metal casings (mainly composed of aluminum and its alloys), such as resource and energy consumption, complexity of the production process, and environmental p…
View article: Study of the Solder Characteristics of IGBT Modules Based on Thermal–Mechanical Coupling Simulation
Study of the Solder Characteristics of IGBT Modules Based on Thermal–Mechanical Coupling Simulation Open
The insulated-gate bipolar transistor (IGBT) represents a crucial component within the domain of power semiconductor devices, which finds ubiquitous employment across a range of critical domains, including new energy vehicles, smart grid s…
View article: Effect of Cu content on properties of Cu/Zn+15%SAC0307+xCu/Al joint by ultrasonic excitation at low temperature
Effect of Cu content on properties of Cu/Zn+15%SAC0307+xCu/Al joint by ultrasonic excitation at low temperature Open
View article: Preparation of Cu-Cr-Zr Alloy by Laser Powder Bed Fusion: Parameter Optimization, Microstructure, Mechanical and Thermal Properties for Microelectronic Applications
Preparation of Cu-Cr-Zr Alloy by Laser Powder Bed Fusion: Parameter Optimization, Microstructure, Mechanical and Thermal Properties for Microelectronic Applications Open
Laser powder bed fusion (LPBF) technology is beneficial for the fabrication of thermal conductive materials, integrating with the predesigned structure, which shows a great potential for high heat dissipation applications. Here, a Cu–Cr–Zr…
View article: Active Switching of Toroidal Resonances by Using a Dirac Semimetal for Terahertz Communication
Active Switching of Toroidal Resonances by Using a Dirac Semimetal for Terahertz Communication Open
The dynamical switching of a toroidal dipole resonance channel is demonstrated by tuning the Fermi level of a Dirac semimetal film sandwiched between the back substrates. As the Fermi level is increased from 30 to 150 meV, the resonance fr…
View article: Critical Factors for In Vivo Measurements of Human Skin by Terahertz Attenuated Total Reflection Spectroscopy
Critical Factors for In Vivo Measurements of Human Skin by Terahertz Attenuated Total Reflection Spectroscopy Open
Attenuated total reflection (ATR) geometry is a suitable choice for in vivo measurements of human skin due to the deep penetration of the field into the sample and since it makes it easy to measure the reference spectrum. On the other hand…
View article: IMCs Microstructure Evolution Dependence of Mechanical Properties for Ni/Sn/Ni Micro Solder-Joints
IMCs Microstructure Evolution Dependence of Mechanical Properties for Ni/Sn/Ni Micro Solder-Joints Open
The current miniaturization trend of microelectronic devices drives the size of solder joints to continually scale down. The miniaturized joints considerably increase intermetallic compounds (IMCs) volume fraction to trigger mechanical rel…
View article: Interaction between spoof localized surface plasmon and terahertz vortex beam
Interaction between spoof localized surface plasmon and terahertz vortex beam Open
We theoretically and experimentally investigate a method of exciting multipole plasmons, including terahertz dark spoof localized surface plasmon (Spoof-LSP) modes, by using normally incident terahertz vortex beam. The vortex beam with ang…
View article: Microstructure and Property of Sn–37Pb Solder Bumps in Ø0.6 mm Ball during Thermal Shock
Microstructure and Property of Sn–37Pb Solder Bumps in Ø0.6 mm Ball during Thermal Shock Open
Sn37Pb solder bumps with Ø0.6 mm ball were used to conduct thermal shock test, microstructure and property of solder bumps were investigated. The experimental results have shown that the shear strength of solder bumps was 62.89 MPa after r…
View article: Ultrasonic-Assisted Soldering of Low-Ag SAC Lead-Free Solder Paste at Low-Temperature
Ultrasonic-Assisted Soldering of Low-Ag SAC Lead-Free Solder Paste at Low-Temperature Open
SAC0307 (Sn-0.3mass%Ag-0.7mass%Cu) lead-free solder pastes were used to complete Cu/Cu joint by ultrasonic-assisted. Effect of nano-Ni particles and temperature on the performance of joint by ultrasonic-assisted with lead-free solder paste…
View article: Evolution of the hardness and Young’s moduli of interlayers in Sn99Cu1/Cu solder joints subjected to isothermal ageing
Evolution of the hardness and Young’s moduli of interlayers in Sn99Cu1/Cu solder joints subjected to isothermal ageing Open
View article: Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles
Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles Open
The nucleation undercooling of TiB2/7075 Al matrix composites, the microstructure observed after solidification at different cooling rate, and the size and distribution of TiB2 particles were investigated. The experimental results have sho…
View article: Effect of Trace Cu on Microstructure, Spreadability and Oxidation Resistance Property of Sn-<i>x</i>Cu Solders
Effect of Trace Cu on Microstructure, Spreadability and Oxidation Resistance Property of Sn-<i>x</i>Cu Solders Open
Sn-xCu (x = 0.5, 0.7, 0.9, 1.1, 1.3) solders were prepared to investigate the influence of trace Cu on the microstructure, the spreadability and the oxidation resistance property of Sn-xCu lead-free solder. Researches have shown that the C…
View article: Micro-mechanical and fracture characteristics of Cu 6 Sn 5 and Cu 3 Sn intermetallic compounds under micro-cantilever bending
Micro-mechanical and fracture characteristics of Cu 6 Sn 5 and Cu 3 Sn intermetallic compounds under micro-cantilever bending Open
View article: Effect of Trace Ge on Wettability and High-Temperature Oxidation Resistance of Sn-0.7Cu Lead-Free Solder
Effect of Trace Ge on Wettability and High-Temperature Oxidation Resistance of Sn-0.7Cu Lead-Free Solder Open
Sn-0.7Cu and Sn-0.7Cu-xGe solder alloys were prepared to investigate the influence of trace Ge on liquid Sn-0.7Cu lead-free solder at high temperature. The spreadability and the wetting force of solders were tested, and the oxidation-resis…
View article: Microstructure and Viscosity of Particles Reinforced 7075 Al Matrix Composites
Microstructure and Viscosity of Particles Reinforced 7075 Al Matrix Composites Open
In-situ TiB2 particle reinforced 7075 Al alloy was produced by molten salt method (LSM). The effects of TiB2 content on the microstructure, the melting behavior and the viscosity of 7075 Al alloy were investigated. The experimental results…
View article: Perpendicular Growth Characteristics of Cu-Sn Intermetallic Compounds at the Surface of 99Sn-1Cu/Cu Solder Interconnects
Perpendicular Growth Characteristics of Cu-Sn Intermetallic Compounds at the Surface of 99Sn-1Cu/Cu Solder Interconnects Open
View article: Study of Height Reduction of Sn99Cu1/Cu Solder Joints as a Result of Isothermal Aging
Study of Height Reduction of Sn99Cu1/Cu Solder Joints as a Result of Isothermal Aging Open