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Improvement of the Oxidation Resistance of the Single-Crystal Ni-Based TMS-82+ Superalloy by Ni–Al Coatings with/without the Diffusion Barrier

Wu, Y. (author), Li, X.W. (author), Song, G.M. (author), Wang, Y.M. (author), Narita, T. (author)

Oxidation behavior of the uncoated base, Ni–Al coated and Re–Cr-Ni plus Ni–Al coated single-crystal (SC) Ni-based TMS-82+ superalloy is studied under cyclic air at 900ºC for 200 h to assess the oxidation resistance. Regardless of the coating processing, Ni–Al coating is effective in improving the oxidation resistance due to the formation of a...

journal article 2010

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The Improvement of Oxidation Resistance of a Re-Based Diffusion Barrier/Ni–Al Coating on the Single-Crystal Ni-Based TMS-82+ Superalloy

Wu, Y. (author), Wang, Y.M. (author), Song, G.M. (author), Li, X.W. (author)

Oxidation behavior of a Re-based diffusion barrier/Ni–Al coated single-crystal (SC) Ni-based TMS-82+ superalloy was studied to compare with those of the base and Ni–Al coated superalloys under cyclic air at 1150 °C for 200 h. The base superalloy showed a negative mass gain due to extensive oxide spallation, and the Ni–Al coated superalloy...

journal article 2011

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Analysis of the evolvement of contact wire wear irregularity in railway catenary based on historical data

Wang, H. (author), Nunez, Alfredo (author), Liu, Zhigang (author), Song, Yang (author), Duan, Fuchuan (author), Dollevoet, R.P.B.J. (author)

This paper studies the evolvement of the wear irregularity of contact wire using wire thickness data measured yearly from a section of railway catenary. The power spectral density and time–frequency representation based on the wavelet transform are employed for data analysis, with an emphasis on local wear irregularities that are crucial for...

journal article 2017

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Synthesis of stable and low-Co2 selective Ɛ-iron carbide Fischer-Tropsch catalysts

Wang, Peng (author), Chen, Wei (author), Chiang, Fu-Kuo (author), Dugulan, A.I. (author), Song, Yuanjun (author), Pestman, Robert (author), Zhang, Kui (author), Yao, Jinsong (author), Feng, Bo (author), Miao, Ping (author), Xu, Wayne (author), Hensen, Emiel J.M. (author)

journal article 2018

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Urbanization impact on Biotope in Shanghai: a comparative study between Huangpu District and Pujin Block

Song, Y. (author), Wang, Min (author)

Biotopes reveal a crucial role in the urban ecology, as they positively create habitat for the biodiversity development. With the increasing severe ecological challenge of urban high-density area and rising ecological awareness, people gradually realized the importance of biodiversity and began to explore the impact of urbanization on the...

poster 2019

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Design of 3D Wireless Power Transfer System Based on 3D Printed Electronics

Hou, T. (author), Xu, J. (author), Elkhuizen, W.S. (author), Wang, C.C. (author), Jiang, Jiehui (author), Geraedts, Jo M.P. (author), Song, Y. (author)

2D coil design limits the use of wireless power transfer (WPT) in many products with freeform outer shapes. In this paper, enabled by 3D printed electronics, we propose a systematic approach to design and fabricate 3D coils for WPT. Based on the circular spiral and rectangular spiral patterns, 3D receiver and transmitter coils can be...

journal article 2019

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Matching images and text with multi-modal tensor fusion and re-ranking

Wang, Tan (author), Hanjalic, A. (author), Xu, Xing (author), Shen, Heng Tao (author), Yang, Yang (author), Song, Jingkuan (author)

A major challenge in matching images and text is that they have intrinsically different data distributions and feature representations. Most existing approaches are based either on embedding or classification, the first one mapping image and text instances into a common embedding space for distance measuring, and the second one regarding...

conference paper 2019

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Design challenges of direct-drive permanent magnet superconducting wind turbine generators

Liu, Dong (author), Song, Xiaowei (author), Wang, X. (author)

In recent years, permanent magnet superconducting (PMSC) generators have become a candidate for applying superconducting (SC) generators in large direct-drive wind turbines. This configuration keeps the SC armature winding and its cooling system stationary and eliminates rotational cooling couplings. However, the low excitation by permanent...

conference paper 2020

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Fan-Out Panel-Level PCB-Embedded SiC Power MOSFETs Packaging

Hou, F. (author), Wang, Qidong (author), Chen, Min (author), Zhang, Kouchi (author), Ferreira, Jan Abraham (author), Wang, Wenbo (author), Ma, R. (author), Su, Meiying (author), Song, Yang (author)

In this article, a novel fan-out panel-level printed circuit board (PCB)-embedded package for phase-leg silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) power module is presented. Electro-thermo-mechanical co-design was conducted, and the maximum package parasitic inductance was found to be about 1.24 nH at 100...

journal article 2020

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A Response Spectrum Analysis of Wind Deflection in Railway Overhead Contact Lines Using Pseudo-Excitation Method

Song, Yang (author), Zhang, Mingjie (author), Wang, H. (author)

The wind deflection of overhead contact lines (OCLs) challenges the stable and safe operation of electrified railways. The steady wind causes the static deflection of the contact line, while the fluctuating wind leads to the OCL buffeting. This paper performs a response spectrum analysis of the wind deflection caused by the combined effects...

journal article 2021

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Short-circuit characteristics of superconducting permanent magnet generators for 10 MW wind turbines

Liu, Dong (author), Song, Xiaowei (author), Wang, X. (author), Elhindi, Mohamed (author), Hasanov, Urfan (author), Gou, Xiaofan (author), Ye, Changqing (author)

Superconducting permanent magnet generators (SCPMGs) are a potential candidate for 10 MW direct-drive wind turbine applications. This paper presents two 10 MW SCPMG designs using MgB<sub>2</sub> cables for the armature winding and investigates the short-circuit characteristics of the designed SCPMGs. The first part...

journal article 2021

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An Investigation on the Current Collection Quality of Railway Pantograph-catenary Systems with Contact Wire Wear Degradations

Song, Yang (author), Wang, H. (author), Liu, Zhigang (author)

In railway pantograph-catenary systems, the contact surfaces undergo wear in long-term operations, directly affecting interaction performance and potentially deteriorating the current collection quality. The effect of contact wire wear (CWW) on the current collection quality should be evaluated to understand the system's health status in...

journal article 2021

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Multi-scale Inequality and Segregation: Theory and Estimation

Owen, Gwilym (author), Manley, D.J. (author), Johnston, Ron (author), Birabi, Tim (author), Song, Hui (author), Wang, Bifeng (author)

This chapter explores multi-scale estimation methods as an important future direction for segregation research in China. We explain how these recently developed methods help address many longstanding problems in traditional index-based segregation research and open up new avenues of research on Chinese cities. We explain the conceptual...

book chapter 2021

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Geographical spatial analysis and risk prediction based on machine learning for maritime traffic accidents: A case study of Fujian sea area

Yang, Yang (author), Shao, Zheping (author), Hu, Yu (author), Mei, Qiang (author), Pan, Jiacai (author), Song, R. (author), Wang, Peng (author)

Safety analysis according to the spatial distribution characteristics of maritime traffic accidents is critical to maritime traffic safety management. An accident analysis framework based on the geographic information system (GIS) is proposed to characterize the spatial distribution of maritime traffic accidents occurring in the Fujian sea area...

journal article 2022

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Planning and developing a high-speed railway new town under state entrepreneurialism in China

Wang, B. (author), de Jong, Martin (author), van Bueren, Ellen (author), Ersoy, A. (author), Song, Yun (author)

The development of high-speed railway (HSR) new towns in China represents a new phase of suburbanization and has had a significant impact on urban expansion, but not all of its mechanisms and drivers have been studied. This article aims to understand the booming development of HSR new towns in China through the theoretical lens of state...

journal article 2022

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Dreaming the wrong dream: An exploratory case study of a policy change toward sustainable urban development in a medium-sized Chinese city

Song, Y. (author), de Jong, W.M. (author), Stead, D. (author), Yang, Wei (author), Wang, B. (author)

Sustainable urban transformation has become a mantra for Chinese cities. While most studies focus on sustainable urbanization in megacities, the far larger number of medium-sized cities is understudied, although the latter face more severe urban problems. This article develops a framework for examining policy change in sustainable urban...

journal article 2022

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Safety-oriented planning of expressway truck service areas based on driver demand

Ding, Wenlong (author), Wang, Y. (author), Chu, Pengzi (author), Chen, Feng (author), Song, Yongchao (author), Zhang, Ning (author), Lin, Dong (author)

The rapid development of the economy has promoted the growth of freight transportation. The truck service areas on expressways, as the main places for truck drivers to rest, play an important role in ensuring the driving safety of trucks. If these service areas are constructed densely or provide a plentiful supply of parking areas, they are...

journal article 2022

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Analysis of Injury Severity of Drivers Involved Different Types of Two-Vehicle Crashes Using Random-Parameters Logit Models with Heterogeneity in Means and Variances

Wu, Qiang (author), Song, Dongdong (author), Wang, Chenzhu (author), Chen, Fei (author), Cheng, Jianchuan (author), Easa, Said M. (author), Yang, Y. (author), Yang, Wenchen (author)

This study proposes random-parameters multinomial logit models, with heterogeneity in means and variances, to explore the differences in the factors influencing injury severities of drivers involved in different types of two-vehicle crashes. The models are verified using crash data from the United Kingdom (UK) over three years (2016–2018). Three...

journal article 2023

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Surrogate modelling of railway pantograph-catenary interaction using deep Long-Short-Term-Memory neural networks

Song, Yang (author), Wang, H. (author), Frøseth, Gunnstein (author), Nåvik, Petter (author), Liu, Zhigang (author), Rønnquist, Anders (author)

The interaction performance of the pantograph-catenary is of great importance as it directly determines the current collection quality and operational safety of trains. The finite element method (FEM) is dominantly used for simulating pantograph-catenary interaction, which is normally computationally heavy. In this work, addressing the...

journal article 2023

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Uncertainty-Encoded Multi-Modal Fusion for Robust Object Detection in Autonomous Driving

Lou, Yang (author), Song, Q. (author), Xu, Qian (author), Tan, Rui (author), Wang, J. (author)

Multi-modal fusion has shown initial promising results for object detection of autonomous driving perception. However, many existing fusion schemes do not consider the quality of each fusion input and may suffer from adverse conditions on one or more sensors. While predictive uncertainty has been applied to characterize single-modal object...

conference paper 2023