Topic
Rotational speed
About: Rotational speed is a research topic. Over the lifetime, 23327 publications have been published within this topic receiving 151696 citations. The topic is also known as: speed of revolution & revolution rate.
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TL;DR: In this article, the effects of working gap and circumferential speed on material removal, change in surface finish and percent improvement of surface finish were investigated using in-house fabricated setup.
159 citations
TL;DR: In this paper, a stochastic method has been developed to evaluate the average performance of an oscillating water column wave energy device equipped with an assumedly linear Wells turbine, represented by a set of sea states, characterized by their power spectra, the free-surface elevation being a Gaussian random variable in each sea state.
155 citations
TL;DR: In this article, the microstructure and mechanical properties of friction stir welded dissimilar butt joints of 6061-to-7050 aluminum alloys were evaluated, and two modes of failure were observed, one through the stir zone and the other through the heat-affected zone.
155 citations
TL;DR: In this paper, the influence of rotational speed/traverse speed on the weld properties of friction stir welded AZ31 magnesium alloy was investigated and it was found that increasing the aforementioned ratio leads to a slight decrease in yield and ultimate strength of the stir zone and the transitional zone.
Abstract: The influence of different parameters such as welding pressure, rotational speed, and traverse speed on the weld properties has been evaluated earlier but there are some important parameters yet to be thoroughly investigated. In this study, an effort has been made to determine the influence of different ratios of rotational speed/traverse speed on mechanical properties of different zones of friction stir welded AZ31 magnesium alloy. Mechanical properties of different zones were determined by a shear punch test. It was found out that increasing the aforementioned ratio leads to a slight decrease in yield and ultimate strength of the stir zone and the transitional zone. It was also observed that increasing rotational/traverse speed ratio increases the weld nugget size and decreases the incomplete root penetration.
153 citations
TL;DR: In this paper, the authors focus on the rules for geometric, hydrodynamic, thermodynamic and aerodynamic similarity in model testing of wave energy converters of oscillating-water-column (OWC) type, with emphasis on air compressibility effects in the air chamber and on air turbine aerodynamics.
152 citations