In this paper, the residual stress of thermal spray coatings in gas turbine component by curvature method has been studied. The samples and shaft were coated by hard WC-12Co cermets using high velocity oxy fuel (HVOF) after preparation in same conditions. The curvature of coated samples was measured by using of coordinate measurement machine (CMM). The metallurgical and Tribological studies has...

To clarify the behavior of the blade tip vortices of a wind turbine equipped with a brimmed-diffuser shroud, called a “Wind-Lens turbine”, we conducted a three-dimensional numerical simulation using a large eddy simulation (LES). Since this unique wind turbine consists of not only rotating blades but also a diffuser shroud with a broad-ring brim at the exit periphery, the flow field around the ...

There are many kinds of assembly structures in heavy-duty gas turbine compressor stator blades which have significant influence on the complex damping vibration characteristics. At present, design is becoming more and compact, so it very meaningful to accurately obtain blade characteristics with contact damping. Firstly, a fretting slip friction dynamic model was introduced, then analysis outer...

マイク ロガスター ビン ・固体酸化物形燃料電池 ハ イブ リッ ドシステムの部分負荷特性の評価* 君 島 真 仁*1, 笠 木 伸 英*2 Performance Evaluation of Micro Gas Turbine-Solid Oxide Fuel Cell Hybrid System under Part-Load Conditions Shinji KIMIJIMA*3 and Nobuhide KASAGI *3 Department of Machinery and Control Systems, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570 Japan Design-point and part-load characteri...

Individual pitch control (IPC) for reducing blade loads has been investigated and proven successful in recent literature. For IPC, the multi-blade co-ordinate (MBC) transformation is used to process the blade load signals from the rotating to a stationary frame of reference. In the stationary frame of reference, the yaw error of a turbine can be appended to generate IPC actions that are able to...

Abstract In multistage axial compressors of gas turbine engines, there is a need for detailed understanding the flow field in between blade rows, which could be obtained by spanwise traversing. This requires pneumatic probe to immersed into path where space limited. Therefore, will affect around it and channel, readings affected that field. As result, these cannot translated parameters based on...

A description is given of the N.G.T.E. thcxmal shock analogue which is suitable for estimating the temperature in n turbine blLadc section M a function of position-and time when the blade is subjected to a slxp change in gas temperature. The rnzthad of operating the analogx znd obtaining results has also been dl;sc&xd. The limitations of the ,analogm have been stated, but they 8rc considered R ...

The properties of ultrasonic creeping wave were stated. Experimentations on the rabbet of aeroengine turbine blade were applied with ultrasonic creeping wave testing. The result indicates that the creeping testing method is feasible to inspect the rabbet of turbine blade in situ.

We present a framework for generating a trivariate B-spline parametrization of turbine blades from measurement data generated by optical scanners. This new representation replaces the standard patchbased representation of industrial blade designs. In a first step, the blade surface is represented by a smoothly varying family of B-spline curves. In a second step, the blade is parametrized by a t...

In a wind turbine system, blades are one of the most critical components. They capture energy from wind and convert it to a mechanical energy for electricity power generation. However, once the blades are defective, the power generation efficiency of the turbine will be significantly affected. In worse case when the blade is seriously damaged, the turbine will have to be shut down completely fo...