搜索结果: 1-5 共查到“Waterproof”相关记录5条 . 查询时间(0.031 秒)
Renewable UV-curable?polyester?methacrylate/cellulose nanocrystals composite?resin?for wood waterproof coating
UV-curable cellulose nanocrystals low viscosity composite star-shaped bio-based
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2023/12/19
Low-viscosity UV-curable?resins?are widely used in industry as they allow for UV curing materials with reduced amounts of reactive diluents to adjust the viscosity. But their?mechanical properties?and...
Cicada-inspired waterproof surfaces closer to reality, researchers report（图）
Cicada-inspired waterproof surfaces closer reality researchers report
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2020/10/30
Researchers who study the physical and chemical properties of insect wings have reproduced the nanostructures that help cicada wings repel water and prevent bacteria from establishing on the surfaces....
Professors' super waterproof surfaces cause water to bounce like a ball
Professors' super waterproof surfaces water to bounce like a ball
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2014/6/19
In a basement lab on BYU’s campus, mechanical engineering professor Julie Crockett analyzes water as it bounces like a ball and rolls down a ramp.
This phenomenon occurs because Crockett and her coll...
Quality Monitoring for Waterproof and Drainage of Loess Road Tunnel
Construction Technology Loess Tunnel Quality Monitoring Waterproof and Drainage
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2011/12/21
Based on practice road tunnel engineering in Gansu province and near areas in west china, the main construction technology and emphasis of quality monitoring of waterproof and drainage of loess road t...
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.
surface piercing propeller boundary element method hydrodynamic characteristics
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2011/9/13
Demand for high-speed marine vehicles (HSMVs) is high among both commercial and naval users. It is the duty of the marine vessel’s designer to provide a hull and propulsion system that diminishes drag...