Results 311 to 320 of about 619,388 (381)

Fault Diagnosis of Industrial Wind Turbine Blade Bearing Using Acoustic Emission Analysis

IEEE Transactions on Instrumentation and Measurement, 2020
Wind turbine blade bearings are often operated in harsh circumstances, which may easily be damaged causing the turbine to lose control and to further result in the reduction of energy production.
Zepeng Liu, Xuefei Wang, Long Zhang
semanticscholar   +1 more source

Graphene in turbine blades

Modern Physics Letters B, 2016
Graphene, the two-dimensional (2D) nanomaterial, draws interest of several researchers due to its many superior properties. It has extensive applications in numerous fields. A turbine is a hydraulic machine which extracts energy from a fluid and converts it into useful work.
P. K. Swain, Sukadev Sahoo, D. K. Das
openaire   +2 more sources

Measurements of turbine blade temperature in an operating aero engine using thermographic phosphors

Measurement science and technology, 2020
A diagnostic method is introduced for non-contact temperature measurements on the surface of a rotating turbine blade in an operating engine using laser-induced excitation of thermographic phosphor coatings on the blades.
T. Jenkins, C. Hess, S. W. Allison, J. Eldridge   +3 more
semanticscholar   +1 more source

A flexible turbine blade for passive blade pitch control in wind turbines

2011 IEEE Power Engineering and Automation Conference, 2011
We present a flexible wind turbine blade that effectively pitches itself according to variable wind loading. In contrast to rigid turbine blades, where active controls are often required to pitch blades, the flexible or morphing blade adjusts its geometry passively, eliminating the need for costly electromechanical systems. We analyze the airfoil using
Asfaw Beyene, David MacPhee
openaire   +2 more sources

Wind Turbine Blade Breakage Monitoring With Deep Autoencoders

IEEE Transactions on Smart Grid, 2018
Monitoring wind turbine blade breakages based on supervisory control and data acquisition (SCADA) data is investigated in this research. A preliminary data analysis is performed to demonstrate that existing SCADA features are unable to present irregular ...
Long Wang, Zijun Zhang, Jia Xu, Ruihua Liu   +3 more
semanticscholar   +1 more source

Automated machining of turbine blades

Russian Engineering Research, 2015
A design method is proposed for automated processes used in the manufacture of gas-turbine blades. As an example, the manufacture of stator blades for a gas turbine is considered. A multifunctional numerically controlled grinding machine is used in the example.
E. V. Tsvetkov, V. A. Poletaev
openaire   +2 more sources

Ice monitoring of a full-scale wind turbine blade using ultrasonic guided waves under varying temperature conditions

Structural Control and Health Monitoring, 2018
Yuequan Bao, Hui Li, Wensong Zhou
exaly   +2 more sources

Pyrometry for turbine blade development

24th Joint Propulsion Conference, 1988
Introduction A IRFOIL temperature distributions under actual engine pressure levels, gas stream turbulence, combustor radial profile, and external boundary-layer heat transfer coefficient are a critical aspect of any turbine development program. The optical pyrometer has proven to be a valuable tool for obtaining experimental substantiation without the
E. Suarez, H. R. Przirembel
openaire   +3 more sources

Experimental study of the effects of turbine solidity, blade profile, pitch angle, surface roughness, and aspect ratio on the H‐Darrieus wind turbine self‐starting and overall performance

Energy Science and Engineering, 2019
New and comprehensive time‐accurate, experimental data from an H‐Darrieus wind turbine are presented to further develop our understanding of the performance of these turbines with a particular focus on self‐starting. The impact of turbine solidity, blade
Longhuan Du, Grant Ingram
exaly   +2 more sources

Turbine Blade Damper [PDF]

, 2001
For a reduction of blade vibration amplitudes in airborne gas turbines special damper devices are used which usually are arranged between the blade platforms of neigboring blades. These dampers possess a cross section like a parabola or a circle and are formed out of sheet steel.
openaire   +1 more source