A5101565602- Silicon Carbide Semiconductor Technologies
- Vehicle Routing Optimization Methods
- Advanced MEMS and NEMS Technologies
- Electrostatic Discharge in Electronics
- Maritime Ports and Logistics
- Thermal Analysis in Power Transmission
- Advancements in Semiconductor Devices and Circuit Design
- Facility Location and Emergency Management
- Ferroelectric and Negative Capacitance Devices
- Maritime Navigation and Safety
- Induction Heating and Inverter Technology
- Advanced optical system design
- Advanced Memory and Neural Computing
- Maritime Transport Emissions and Efficiency
- Structural Integrity and Reliability Analysis
- Advanced Manufacturing and Logistics Optimization
- Silicon and Solar Cell Technologies
- Electrowetting and Microfluidic Technologies
- Machine Fault Diagnosis Techniques
- Paleontology and Evolutionary Biology
- Sustainable Supply Chain Management
- Piezoelectric Actuators and Control
- Humic Substances and Bio-Organic Studies
- Phosphorus and nutrient management
- Acoustic Wave Resonator Technologies
Huazhong University of Science and Technology
2024
Wuhan University of Technology
2024
Beijing Microelectronics Technology Institute
2024
Guangdong University of Technology
2013-2023
Tsinghua University
2022-2023
Shanghai University
2013-2021
Xi’an Jiaotong-Liverpool University
2021
Shanghai Zhabei District Shibei Hospital
2021
Hunan University
2018-2020
Huangshan University
2017
Abstract As one of the main forms propulsion for electric ships, pod thruster has both and maneuvering functions, can achieve 360° full rotation in horizontal plane, become mainstream cruise oceanographic research icebreakers, other ships. To explore changes hydrodynamic performance propellers under different structural parameters, numerical simulations were conducted using RANS method standard κ-ε turbulence model Fluent software. The findings show that simulation used this study...
In this paper, based on acoustic emission (AE) monitoring and digital filtering technology, the low high frequency components in switching mechanical stress wave (MSW) of insulated gate bipolar transistor (IGBT) device were discovered for first time. Then, effects turn-off current studied. The obviously linear relationship was found between component current, could closely follow change showing that strongly related with current. contained two pulse waves inverse phase, single similarity, it...
The insulated gate bipolar transistor (IGBT), one of the most vulnerable component, is precious central component in converter interior. High junction temperature will lead to device failure, which main reason failure power electronic system. Therefore, on-line high precision measurement IGBT module basis life prediction and reliability evaluation high-power conversion equipment. In this paper, principle extraction latest development related technologies are summarized. particular, working...
AbstractReliability of MEMS is essential to its successful application. This paper focused on the failure mode MEMS, reliability test and modeling method typical devices. Designing discussed based review model reliability. In this paper, firstly, recent development in field elaborated. Secondly, research aimed at different mechanism devices summarized three major areas: several common kinds Finally, main direction trend future discussed.Keywords: MEMSreliabilityfailure modereliability...
Temperature sensitive electrical parameter (TSEP) approaches are widely employed in the junction temperature ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$T_{j}$ </tex-math></inline-formula> ) detection and prediction of power devices, especially switching parameter. In this article, voltage-rise time its loss during turn-off process used as TSEP index for because coupling relationship with maximum...
This paper investigates a vehicle routing problem arising in the waste collection of healthcare system with concern transportation risk. Three types facilities abstracted from health are investigated this paper, namely, points, without and small facilities. Two-echelon mode is applied which generated by first collected then transferred to recycling centre. To solve problem, we propose mixed-integer linear programming model considering time windows capacity, use particle swarm optimisation...
Well-preserved dinosaur eggs from the Cretaceous Huizhou Formation in Xiuning Basin, Anhui Province, China, are analysed this paper. We describe a new oospecies, Similifaveoloolithus qiyunshanensis, based on several distinct characters of external morphology, size, eggshell thickness, and internal microstructure. Radial sections oospecies show branched units with fused layer near outer surface, while numerous irregular pores cones constitute honeycomb pattern tangential sections. The...
The insulated gate bipolar transistor (IGBT) is the most expensive central component in converter interior, but it also one of vulnerable to failure. failure power electronic system mainly due temperature change. Therefore, accurate extraction IGBT module junction basis life prediction and reliability evaluation high-power conversion equipment. There a great advantage non-invasive process obtaining through dynamic sensitive electrical parameter method; However, measurement results are easily...
New building wall materials is a kind of material which not at the price consuming cultivated land, destruction ecology and environmental pollution, adapting to construction industrialization, mechanization, reducing wet operations site, improving function modern construction. Presently, as for our country stage, new including all except clay solid brick materials. In country, production type has been increasing rapidly its quality product improved obviously, what’s more, technology...
This study employed dynamic meshing technology to investigate the pressure field, velocity field and cavitation area in single-seat control valve are studied. The results show that degree on surface of core decreases with decrease opening during closing process valve. sealing seat increases as decreases. During reduction opening, change trend vapor phase volume inside body is consistent overall steady-state simulation. When inlet fluctuates, phenomenon will change, increase pressure....
An algorithm is introduced to minimise the beam angle of compound parabolic concentrators (CPCs) with LED sources under condition a fixed exit aperture, as big will cause large off-axis aberration and low efficiency for projection system. According edge-ray principle coordinates transform, formula derived considered extended sources. In this paper, an example given prove algorithm. Not only minimum but also specific parameters CPCs can be obtained by