Results 161 to 170 of about 1,228 (212)

What If Cooking Isn't Chemistry? Examining the Good and the Harm in Metaphorical Connections Between Science and Everyday Activities

Science Education, EarlyView.
ABSTRACT This theoretical paper examines why we make claims like “cooking is chemistry,” what these claims mean, and what good or harm they accomplish. We make three interrelated arguments: First, the relationship between scientific and everyday practices is more complicated and less obvious than is often claimed; second, educators and scientists link ...
Noah Weeth Feinstein, Ryan L. Stowe
wiley   +1 more source

Application of Circular Economy Principles to Power Generation: Extending the Life of A Hydropower Plant by Pumped Hydro Energy Storage

Sustainable Development, EarlyView.
ABSTRACT The application of circular economy, which aims to maximize efficiency and reduce waste, to renewable energy sources necessitates, given the intermittent nature of the latter, robust energy storage solutions to ensure grid stability and avoid wasting energy.
Ó. Martín‐Llorente, E. Jiménez‐Macias, J. C. Sáenz‐Diez Muro, E. Martínez‐Cámara, J. Blanco‐Fernández   +4 more
wiley   +1 more source

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MODELING OF THE WELD PRIMARY MACROSTRUCTURE FORMATION AT LASER WELDING

Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S. O. Makarova, 2022
In modern shipbuilding, those enterprises and shipyards that introduce innovative and highly efficient technologies gain an advantage in the competitive struggle. The experience of the largest European shipyards, such as Meyer Werft and Blohm und Voss in Germany, Kvaerner Massa Yard in Finland, Fincantieri in Italy, shows the great potential of laser ...
N. V. Makarchuk, A. V. Makarchuk, V. N. Startsev   +2 more
openaire   +1 more source

The essence of welding is the formation of a joint during contact welding

Asian Journal of Multidimensional Research, 2021
In the manufacture of car parts, welding is an important technological process and many types of welding are used. Contact triple welding is the most effective, and in some cases, the only method in the manufacture of steel wheel rims ofpassenger cars. Because this type of welding is fast-acting, without any filler electrodes, without protective gases,
Toraev Shoyadbek, Xondamir Yusupbekov, Boburjon Nazirov, Sherbobo Yusupov, Alyor Ahmadjonov   +4 more
openaire   +1 more source

Dislocation model of the formation of a welded joint in cold welding

Materials Today: Proceedings, 2021
Abstract The dislocation model of welding joint formation during the process of cold welding is proposed. The relations were obtained and the estimated grade of tendency of a number of metals to cold welding was performed on the grounds of the hypothesis of active centers limiting sizes.
R.A. Latypov, V.V. Bulychev, G.R. Latypova, S.S. Paramonov   +3 more
openaire   +1 more source

Weld defect formation in rail thermite welds

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2006
A previously developed heat transfer model is used to study the influence of welding parameters on weld defect development in thermite welds. Weld defect formation maps are constructed from a series of heat transfer simulations. For the current normal rail thermite welding conditions, it is found that shrinkage cavity formation can be avoided but cold ...
Y Chen, F V Lawrence, C P L Barkan, J A Dantzig   +3 more
openaire   +1 more source

Weld formation control for arc welding robot

The International Journal of Advanced Manufacturing Technology, 2008
The control of weld formation in gas tungsten arc welding is required for “teach and playback” robot to suit the gap variation in the multi-pass welding process. This paper presents a robotic system based on the real-time vision measurement. A close-loop control system is developed for weld formation control in backing welding. A novel prediction model
Shen Hongyuan, Huang Xixia, Lin Tao, Chen Shanben   +3 more
openaire   +1 more source

Microstructural formation in longitudinal bicrystal welds

Metallurgical Transactions A, 1993
The formation and selection processes in dendritic microstructures that occur during the welding of two differently oriented Fe-15 wt pct Ni-15 wt pct Cr single-crystal pieces were analyzed. The specimens were oriented by X-ray diffraction and cut along precise crystallographic orientations in order to weld specific surfaces in a manner that joined two
Rappaz, M., Vitek, J. M., David, S. A., Boatner, L. A.   +3 more
openaire   +1 more source

Formation of Seam and Charge Welds in 2D Extrusion Welding

AIP Conference Proceedings, 2011
The conditions of extrusion welding when extruding through an empty or a filled die is investigated by experiment combined by FEA. An experimental grid pattern technique has been successfully applied to study metal flow in both cases. Finite element models have been created using Deform 2D and 3D.
Yawar Abbas Khan, Henry Valberg, Francisco Chinesta, Yvan Chastel, Mohamed El Mansori   +4 more
openaire   +1 more source

Study of weld formation characteristics in laser-arc hybrid welding

International Journal of Modern Physics B, 2022
The laser-arc hybrid welding was carried out on the marine-use steel, and the effects of primary parameters on weld behavior were investigated. The results show that the weld penetration increased gradually with the increase of laser power. Meanwhile, superior weld formation, penetration and reinforcement were achieved when laser and wire distance was
Hongwei Sun, Zhidong Yang, Chenfu Fang, Yuntao Chen, Yongshun Zhang, Mingxiao Shi   +5 more
openaire   +1 more source