Results 111 to 120 of about 121,827 (324)
Prediction of Cure‐Induced Wrinkles Aimed at the Manufacturing of Large Wind Turbine Blades
Polymer Composites, EarlyView.The step‐wise progression of the development of cure‐induced wrinkles. Before curing, at room temperature the laminate is resting at the mould face. In the next step, the wrinkle is developing due to thermal gradients. At the end of curing, the composite has cooled down and the undulation is left in, byt the increase in resin stiffness across the ...
Jesper K. Jørgensen +2 more
wiley +1 more source
A STUDY OF VARIOUS BLADE FAULT CONDITIONS ON A WIND TURBINE USING VIBRATION SIGNALS THROUGH HISTOGRAM FEATURES [PDF]
Journal of Engineering Science and Technology, 2018 Wind energy is one of the rapidly evolving renewable energy resources. It is particularly essential to built dependability and accessibility of wind turbines and additional to decrease the wind energy cost.
A. JOSHUVA, V. SUGUMARAN
doaj
Use of the WEST-1 wind turbine simulator to predict blade fatigue load distribution [PDF]
To test the ability of WEST-1 to predict blade fatigue load distribution, actual wind signals were fed into the simulator and the response data were recorded and processed in the same manner as actual wind turbine data.
Janetzke, D. C.
core +1 more source
Rare Metals, EarlyView.ABSTRACT Introducing solid‐state phase transformations into the design of heterogeneous structures is considered an effective strategy for simultaneously optimizing both microstructure and mechanical properties. This study investigates the thermodynamic and kinetic mechanisms of the γ → α transformation in Ti48Al5Nb2Cr0.6Re0.1C alloy under different ...
Ke‐Xuan Li +6 more
wiley +1 more source
Oxidation Performance of NiCoCrAlYTa + 7YSZ Coatings With Ta Addition at Different Temperatures
Rare Metals, EarlyView.ABSTRACT This study investigates the morphology and oxidation behavior of thermally grown oxides (TGO) formed at the interface of NiCoCrAlYTa + 7YSZ (7 wt% Y2O3‐stabilized zirconia) coatings deposited by air plasma spray (APS) in air environments at 1050°C, 1100°C, and 1150°C. The enrichment of Ta‐rich oxides beneath the TGO, along with the segregation
Cheng Xu +8 more
wiley +1 more source
Design evolution of large wind turbine generators [PDF]
, 1979 During the past five years, the goals of economy and reliability have led to a significant evolution in the basic design--both external and internal--of large wind turbine systems.
Spera, D. A.
core +1 more source
Rare Metals, EarlyView.ABSTRACT Nb‐Si‐based superalloys are considered as the most potential candidate materials for nickel‐based superalloys due to the lower density and higher using temperature. Here, a type of stable Nbss/γNb5Si3 bi‐phases structure with a coherent interface has been successfully designed. Additionally, the Nbss and γNb5Si3 phases showcase the orientation
Xiao‐Wei Wang +6 more
wiley +1 more source
Heat transfer in the tip region of a rotor blade simulator [PDF]
In gas turbines, the blades of axial turbine stages rotate in close proximity to a stationary peripheral wall. Differential expansion of the turbine wheel, blades, and the shroud causes variations in the size of the clearance gap between blade tip and ...
Chyu, M. K., Metzger, D. E., Moon, H. K.
core +1 more source
Rare Metals, EarlyView.ABSTRACT Diffusion bonding (DB) of near‐α titanium alloys requires high temperatures, which can cause grain coarsening, structural deformations, and degradation of the workpiece's mechanical characteristics. In this study, thermal hydrogen processing (THP) was applied to Ti65, combined with selective magnetron sputtering of a Ti‐Al thin film to promote
Liang‐Wei Kang +9 more
wiley +1 more source
Reasons for low aerodynamic performance of 13.5-centimeter-tip-diameter aircraft engine starter turbine [PDF]
The reasons for the low aerodynamic performance of a 13.5 cm tip diameter aircraft engine starter turbine were investigated. Both the stator and the stage were evaluated.
Haas, J. E., Hermann, P., Roelke, R. J.
core +1 more source