Results 21 to 30 of about 115,747 (263)

Surrogate Models for Wind Turbine Electrical Power and Fatigue Loads in Wind Farm

open access: yesEnergies, 2020
Fatigue damage of turbine components is typically computed by running a rain-flow counting algorithm on the load signals of the components. This process is not linear and time consuming, thus, it is non-trivial for an application of wind farm control ...
Georgios Gasparis   +2 more
doaj   +1 more source

Fatigue and Training Load Factors in Volleyball

open access: yesInternational Journal of Environmental Research and Public Health, 2022
The purpose of this article was to determine the internal and external loads experienced by volleyball players in a weekly cycle during the competitive season. Using accelerometers, as well as subjective rating perceived exertion (RPE) and total quality recovery scale (TQR) questionnaires, eleven female athletes were monitored during five days of ...
Damian Pawlik, Dariusz Mroczek
openaire   +2 more sources

Simulation of stochastic loads for fatigue experiments [PDF]

open access: yesExperimental Mechanics, 1989
A simple direct simulation method for stochastic fatigue-load generation is described in this paper. The simulation method is based on the assumption that only the peaks of the load process significantly affect the fatigue life. The method requires the conditional distribution functions of load ranges given the last peak values. Analytical estimates of
Sørensen, John Dalsgaard   +1 more
openaire   +2 more sources

A Composite Super-Twisting Sliding Mode Approach for Platform Motion Suppression and Power Regulation of Floating Offshore Wind Turbine

open access: yesJournal of Marine Science and Engineering, 2023
The floating platform motion of an offshore wind turbine system can exacerbate output power fluctuations and increase fatigue loads. This paper proposes a new scheme based on a fast second-order sliding mode (SOSM) control and an adaptive super-twisting ...
Wenxiang Yang   +4 more
doaj   +1 more source

Improved numerical model for fatigue cumulative damage of mechanical structure considering load sequence and interaction

open access: yesAdvances in Mechanical Engineering, 2021
To more accurately predict the fatigue life of components under the action of random loads, it is necessary to explore the influence of the interaction between the load sequence and the load on the life prediction.
Bixiong Huang   +3 more
doaj   +1 more source

Influence of Fatigue and Load Carriage on Mechanical Loading During Walking [PDF]

open access: yesMilitary Medicine, 2012
Load carriage and muscular fatigue are two major stressors experienced by military recruits during basic training. The purpose of this study was to assess the influences of load carriage and muscular fatigue on ground reaction forces and ground reaction loading rates during walking.
Wang, He   +4 more
openaire   +2 more sources

Dynamic synthetic inertial control method of wind turbines considering fatigue load

open access: yesFrontiers in Energy Research, 2023
This paper proposes a dynamic synthetic inertia control method, considering the fatigue loads of the wind turbine. The control objectives include reducing the rate of change of frequency and frequency nadir of the power system and the fatigue load of the
Hanbo Wang   +4 more
doaj   +1 more source

Variable Speed-Variable Pitch Controllers for Aero-Servo-Elastic Simulations of Wind Turbine Support Structures

open access: yesJournal of Fluid Science and Technology, 2011
Site-specific fatigue evaluation of wind turbine support structures has been required by Japanese domestic rule since the revision of the Building Code in 2007.
Shigeo YOSHDA
doaj   +1 more source

Study on Cl Erosion of Concrete under the Combined Effect of Fatigue Load and Wet–Dry Cycles: A Review

open access: yesApplied Sciences, 2023
The service environment of concrete in the marine environment is harsh, and demands regarding the durability of marine concrete have increased. Marine concrete in harbor and wharf areas suffers from the combined effect of fatigue load, dry–wet cycles ...
Maohua Zhang   +3 more
doaj   +1 more source

Interface Fatigue Test of Hybrid-Bonded Fiber-Reinforced Plastic-Reinforced Concrete Specimen

open access: yesBuildings
This research produced five hybrid-bonded fiber-reinforced plastic (HB-FRP)-reinforced beam specimens, and different fatigue load amplitudes were used as parameter variables for the fatigue performance tests of the FRP–concrete interface.
Kun Zhou   +7 more
doaj   +1 more source

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