Results 51 to 60 of about 175,159 (307)

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş, Mehmet Emin Demir, Sercan Özpınar   +2 more
wiley   +1 more source

An Improved Heave Compensation Algorithm for Strapdown INS in Marine Operations

Applied Sciences
Heave compensation is crucial for the improvement of marine engineering. However, there remain two main drawbacks in existing methods. One drawback is that the output accuracy of heave information is insufficient.
Qianqian Gao, Bixin Cai
doaj   +1 more source

Educating Engineer Officers for Merchant Nuclear Powered Ships – a Literature Review [PDF]

TransNav
Ocean shipping must reduce air emissions and, at the same time, ensure logistical effectiveness. There is a growing interest in small modular nuclear reactors (SMRs) as power source for merchant ships.
Erlend Morland, Halvor Schøyen, Jan EmblemsvÁg   +2 more
doaj   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

A large temperature-controlled static and dynamic mechanical testing apparatus on marine soil-structure interfaces for marine engineering

Frontiers in Marine Science
Marine soil–structure interfaces are commonly encountered in marine engineering, where they are inevitably subjected to temperature variations and complex stress conditions, including static, dynamic, and creep loads.
Bowen Yang, Kaiwei Xu, Kun Tan, Peng Cui, Peng Cui, Xianhui Feng   +5 more
doaj   +1 more source

Power Extraction Strategy of a Robust kW Range Marine Tidal Turbine Based on Permanent Magnet Synchronous Generators and Passive Rectifiers [PDF]

, 2014
This paper presents a kW range marine tidal current power generation system consisting of a fixed pitch marine current turbine (MCT) with two permanent magnet synchronous generators in the turbine shaft, two diode rectifiers (each rectifier is associated
ODEDELE, Nafissah, CHARPENTIER, Jean-Frederic, C. Olmi, J.F. Charpentier, N. Odedele, OLMI, Christophe   +5 more
core   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

Advanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu, Qihang Lv, Lubin Liu, Zhezhe Zhou, Chentao Yan, Ao Qin, Jianting Ma, Shuhui Liang, Yue Xu, Min Hong, Bin Li, Pingan Song   +11 more
wiley   +1 more source

Advanced Underwater Measurement System for ROVs: Integrating Sonar and Stereo Vision for Enhanced Subsea Infrastructure Maintenance

Journal of Marine Science and Engineering
In the realm of ocean engineering and maintenance of subsea structures, accurate underwater distance quantification plays a crucial role. However, the precision of such measurements is often compromised in underwater environments due to backward ...
Jiawei Zhang, Fenglei Han, Duanfeng Han, Jianfeng Yang, Wangyuan Zhao, Hansheng Li   +5 more
doaj   +1 more source

Project plan and research progress on key technologies of seismic zoning in sea areas

地震科学进展, 2020
China is located between the circum-Pacific seismic belt and the Mediterranean-Himalayan seismic belt, the tectonic activity in both the land and sea areas is very strong.
Xiaojun Li, Su Chen, Zhikun Ren, Yuejun Lü, Huawei Tong, Zengping Wen   +5 more
doaj   +1 more source

Marine Engineering and Applications [PDF]

Mathematical Problems in Engineering, 2013
The number of new ships worldwide continues to grow, and the new technologies are developed to improve the safety and international requirements of ship are increasing as well. This special issue has a strong impact in many fields, like system monitoring and fault diagnostic, corrosion science, vessel’s propulsion systems, engineering of vessel’s ...
Chang-Hua Lien, Jia-Jang Wu, Irene Penesis, Henryk Śniegocki, Wen-Jer Chang   +4 more
openaire   +1 more source