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Book
The theory and practice of controllable pitch propellers
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ISBN: 0900976624 Year: 1976 Publisher: London : Marine Media Management Ltd for the Institute of Marine Engineers,

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Digital
Steam navigation : notice, explanatory and illustrative, of Woodcroft's patent spiral propeller, with increasing and varying pitches.
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Year: 1846 Publisher: Manchester [England] Cave and Sever

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Book
Micro/Nano Manufacturing
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ISBN: 3039211706 3039211692 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Micro manufacturing involves dealing with the fabrication of structures in the size range of 0.1 to 1000 µm. The scope of nano manufacturing extends the size range of manufactured features to even smaller length scales—below 100 nm. A strict borderline between micro and nano manufacturing can hardly be drawn, such that both domains are treated as complementary and mutually beneficial within a closely interconnected scientific community. Both micro and nano manufacturing can be considered as important enablers for high-end products. This Special Issue of Applied Sciences is dedicated to recent advances in research and development within the field of micro and nano manufacturing. The included papers report recent findings and advances in manufacturing technologies for producing products with micro and nano scale features and structures as well as applications underpinned by the advances in these technologies.

Keywords

path adaptability --- uncertainty quantification --- hardening --- empirical mode decomposition --- microlens array mold --- gaussian process modeling --- multi-objective particle swarm optimization --- micro reactors --- XRD --- surface roughness --- water impermeability tests --- nanocone array --- additive manufacturing --- antireflection nanostructure --- ultraprecision machining --- Surface-enhanced Raman scattering --- micro stereolithography --- optical encoder --- micro assembly --- micro-optics --- nanosphere array --- micro-assembly --- injection molding --- Portland limestone ternary fiber–cement nanohybrids --- hot embossing --- deterministic polishing --- micro-lens array --- process parameter optimization --- TGA/dTG --- intrinsic mode function --- micro factories --- three-dimensional elliptical vibration cutting --- flow control --- micro-EDM molds --- Image segmentation --- micro actuators --- culture dish adapter --- flexural strength --- SERS --- low PC clinker --- MIP --- selective laser melting --- micro sensors --- friction coefficient --- design of experiments --- Ti6Al4V --- micro-spring --- contactless embossing --- micro and nano additive manufacturing --- Taguchi’s method --- nanoimprinting --- perfusion culture --- micro and nano manufacturing --- data structure --- fluid jet polishing --- nitrogen supersaturation --- spatial uncertainty modeling --- active alignment --- variable pitch path --- conceptual design --- feature extraction --- blaze --- micro-nozzle --- product development --- opto-ASIC --- wafer-level optics --- residual error optimization --- stiffness control --- surface engineering and interface nanotechnology --- design for manufacturability --- anodic aluminum oxide --- plasma nitriding --- micro 3D printing --- hydrophobicity --- grating --- micro-fluidics --- closed environment --- chatter identification --- small recess structure


Book
Wind Turbine Aerodynamics
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ISBN: 3039215256 3039215248 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Wind turbine aerodynamics is one of the central subjects of wind turbine technology. To reduce the levelized cost of energy (LCOE), the size of a single wind turbine has been increased to 12 MW at present, with further increases expected in the near future. Big wind turbines and their associated wind farms have many advantages but also challenges. The typical effects are mainly related to the increase in Reynolds number and blade flexibility. This Special Issue is a collection of 21 important research works addressing the aerodynamic challenges appearing in such developments. The 21 research papers cover a wide range of problems related to wind turbine aerodynamics, which includes atmospheric turbulent flow modeling, wind turbine flow modeling, wind turbine design, wind turbine control, wind farm flow modeling in complex terrain, wind turbine noise modeling, vertical axis wind turbine, and offshore wind energy. Readers from all over the globe are expected to greatly benefit from this Special Issue collection regarding their own work and the goal of enabling the technological development of new environmentally friendly and cost-effective wind energy systems in order to reach the target of 100% energy use from renewable sources, worldwide, by 2050

Keywords

simplified free vortex wake --- n/a --- H-type VAWT --- variable pitch --- wind tunnel experiment --- rotor blade optimization --- Non-dominated Sorting Genetic Algorithm (NSGA-II) --- wake effect --- wind turbine noise propagation --- RANS --- axial steady condition --- wind turbine blades --- optimization --- computational fluid dynamic --- straight blade --- typhoon --- gradient-based --- image processing --- actuator line method --- piezo-electric flow sensor --- stall --- turbulence --- airfoil design --- vortex ring --- defects --- DMST model --- wind turbine design --- S809 airfoil --- dynamic fluid body interaction --- Computational Fluid Dynamics --- ABL stability --- semi-submersible platform --- random search --- floating offshore wind turbine --- blade length --- adjoint approach --- Fatigue Loads --- wind turbine optimization --- wind turbine airfoil --- particle swarm optimization --- rotational augmentation --- NREL Phase VI --- mechanical performance --- coupling of aerodynamics and hydrodynamics --- tip speed ratio --- aerodynamics --- oscillating freestream --- super-statistics --- blade element momentum theory --- wind turbine --- wind energy --- boundary layer separation --- wind turbine blade optimization --- actuator disc --- dynamic stall --- complex terrain --- laminar-turbulent transition --- SCADA --- OpenFOAM --- atmospheric stability --- computational fluid dynamics --- economic analysis --- OC5 DeepCWind --- wind tunnel --- actuator disk --- meso/microscale --- cost of energy --- power coefficient --- pitch oscillation --- condition monitoring --- aerodynamic characteristics --- blade parametrization --- wind turbine wakes --- truss Spar floating foundation --- wind resource assessment --- wind shear --- wind turbine noise source --- design --- low wind speed areas --- aerodynamic --- wind farm --- met mast measurements --- turbulent inflow --- VAWTs (Vertical axis wind turbines) --- thermography --- wind speed extrapolation --- MEXICO --- wind turbine wake --- aerodynamic force --- layout optimization --- H-type floating VAWT --- LES --- NACA0012


Book
Machining—Recent Advances, Applications and Challenges
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ISBN: 3039213784 3039213776 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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The Special Issue Machining—Recent Advances, Applications and Challenges is intended as a humble collection of some of the hottest topics in machining. The manufacturing industry is a varying and challenging environment where new advances emerge from one day to another. In recent years, new manufacturing procedures have retained increasing attention from the industrial and scientific community. However, machining still remains the key operation to achieve high productivity and precision for high-added value parts. Continuous research is performed, and new ideas are constantly considered. This Special Issue summarizes selected high-quality papers which were submitted, peer-reviewed, and recommended by experts. It covers some (but not only) of the following topics: High performance operations for difficult-to-cut alloys, wrought and cast materials, light alloys, ceramics, etc.; Cutting tools, grades, substrates and coatings. Wear damage; Advanced cooling in machining: Minimum quantity of lubricant, dry or cryogenics; Modelling, focused on the reduction of risks, the process outcome, and to maintain surface integrity; Vibration problems in machines: Active and passive/predictive methods, sources, diagnosis and avoidance; Influence of machining in new concepts of machine–tool, and machine static and dynamic behaviors; Machinability of new composites, brittle and emerging materials; Assisted machining processes by high-pressure, laser, US, and others; Introduction of new analytics and decision making into machining programming. We wish to thank the reviewers and staff from Materials for their comments, advice, suggestions and invaluable support during the development of this Special Issue.

Keywords

in situ estimation --- modeling --- simulation --- variable pitch --- X-ray diffraction --- cutting edge preparation --- plastic zone --- flank milling --- surface roughness --- power consumption --- cutting tool --- fatigue --- additive manufacturing --- optimization --- trochoidal step --- surface topography --- sinusoidal grid --- milling --- desirability approach --- electrochemical discharge machining --- fast simulation --- Inconel 718 --- secondary adhesion wear --- machinability --- hybrid stacks drilling --- cooling rate --- shape memory alloy --- residual stress --- diameter variation --- turning --- computer vision --- workholding --- on-machine monitoring --- chip morphology --- dry-cutting --- turning machine tools --- SACE-drilled hole depth --- residual stresses --- cryogenic machining --- prime machining costs --- PVD Ti0.41Al0.59N/Ti0.55Al0.45N coating --- single point incremental sheet forming --- butt weld joint --- dish angle --- machining characteristic --- DSC test --- segmented diamond blade --- cutting tool wear --- ultra-precision machining --- ceramics --- shape memory effect --- current density --- fractal dimension --- crack growth rate --- drilling --- force–temperature correlation through analytical modeling --- finite element model --- analytic solution --- aluminium --- taguchi method --- multi-objective optimization --- real-time prediction --- Gamma-TiAl --- cutting temperature --- EN 31 steel --- superalloys --- material-removal rate --- glass machining --- corner radius --- thin-wall machining --- vibration --- GPU --- titanium aluminides --- minimum quantity lubrication --- machining temperatures at two deformation zones --- finite element method --- roughness --- slight materials --- high computational efficiency --- dynamic --- adhesive --- heat transfer analysis --- connections --- stability --- vibrations --- trochoidal milling --- magnesium alloys --- specific cutting energy --- laser-assisted machining --- artificial neutral network --- microscopic analysis --- Milling stability --- topography --- weight loss --- modal testing --- sustainable machining --- dry --- damping --- ductile machining --- Inconel® 718 --- modelling --- cutting edge microgeometry --- electropulsing --- PCD --- cutting geometry --- fixture --- artificial neural networks --- spark-assisted chemical engraving --- machining --- specific energy consumption --- heat transfer search algorithm --- material removal rate --- prediction --- CFRP/UNS A92024 --- tool wear --- titanium alloy --- multi-beam laser --- chip compression ratio --- design of experiments --- concrete --- ANN --- titanium --- chatter --- response surface methodology --- machine tool --- superelastic nitinol --- optimal machining conditions --- machine vision --- steel sheet --- cutting process --- fracture mechanism --- self-excitation --- tool insert condition --- induction assisted milling --- hole quality --- GA --- titanium alloys --- microlens array --- parameter identification --- Taguchi method --- weld reinforcement --- slow tool servo --- cutting parameters --- flank super abrasive machining (SAM) --- stiffness properties --- grey relational analysis --- deflection --- computer numerical control --- grain density --- surface grinding --- the cutting force components --- Huber–Mises stress --- WEDM

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