Results 41 to 50 of about 1,734 (183)

Ultra‐broadband sound absorption characteristics in underwater ultra‐thin metamaterial with three layer bubbles

Engineering Reports
The interest of this article is to obtain the underwater broadband sound absorption characteristics by filling three layers of bubbles in Polydimethylsiloxane polymer (PDMS).
Nansha Gao, Qiaogao Huang, Guang Pan
doaj   +1 more source

Electrospinning nanofilms to improve sound absorption of flexible or rigid porous material

Results in Engineering
To further enhance the sound absorption capabilities of porous materials, we employed electrospinning technology to prepare electrospinning nanofilms using polyvinyl butyral solution.
Nansha Gao, Zhicheng Zhang, Jiacheng Guo, Zhenhua Wang, Xiao Liang, Guang Pan   +5 more
doaj   +1 more source

Effectiveness Assessment of Underwater Area Cruise Based on the ADC Method

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater area surveillance plays a crucial role in upholding national security, safeguarding strategic interests, and mitigating potential threats. Despite its significance, a notable gap persists in the availability of comprehensive models for assessing its effectiveness.
Qingwei Liang, Yuxin Lin, Mingyang Luo, Zhanghong Zeng   +3 more
wiley   +1 more source

Multiple AUUV cooperative area target searching method based on distributed model

AIP Advances, 2022
Underwater unmanned vehicle cluster cooperative area target searching is an inexpensive and efficient effort for salvaging and vigilance at sea. In order to realize the autonomous area searching of the attacking underwater unmanned vehicle (AUUV) cluster,
Honggang Zhang, Yuchen Sun, Peng Wang, Hu Zhang   +3 more
doaj   +1 more source

Influence of a passive upstream deflector on the performance of the Savonius wind turbine

Energy Reports, 2022
Some recent studies show that the aerodynamic efficiency of the Savonius wind turbine can be improved by adding a properly designed deflector upstream of the rotor blade.
Wenlong Tian, Jiaheng Bian, Guangyong Yang, Xiwen Ni, Zhaoyong Mao   +4 more
doaj   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

Research Progress on Corrosion of Structural Materials for Unmanned Underwater Submersible Vehicles [PDF]

Cailiao Baohu
Unmanned underwater vehicles are one of the indispensable tools for people to develop， utilize and explore the ocean， and have broad military application prospects.With the continuous progress and development of science and technology， unmanned ...
ZHANG Qichao, ZHANG Baolong, JIANG Yishan, ZHAO Xin, SONG Penglei, XIAO Feng.
doaj   +1 more source

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite, François Poisson, Irati Abascal, Javier Menéndez‐Blázquez, Clara Cánovas Pérez, Sofia Conti, Ricardo Sagarminaga, Juan Antonio Raga, David March   +8 more
wiley   +1 more source

THRUSTER DESIGN FOR UNMANNED UNDERWATER VEHICLES

, 2020
Underwater researches have been carried out for various purposes such as the protection and investigation of natural and environmental resources, various construction activities, finding and extracting fossil fuel resources, academic and industrial researches.
Gücer, Çetin Arda, Acar, Onur, Kantarcıoğlu, Burak, Ulu, Cenk   +3 more
openaire   +2 more sources

A validated 3D point‐cloud analysis workflow for the creation of seagrass canopy height models

Methods in Ecology and Evolution, EarlyView.
Abstract Seagrasses support highly productive ecosystems in both temperate and tropical waters and provide essential ecosystem services. Despite their importance, the vertical structure of seagrasses (i.e. the canopy) remains poorly characterised at the microscale, even though it is a strong predictor of ecological processes that influence both ...
Daniele Ventura
wiley   +1 more source