Results 131 to 140 of about 831,737 (308)
High Voltage, EarlyView.ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang +5 more
wiley +1 more source
Comparative study of electrogas and shielded metal arc welding processes on steel A537 welded joints
Materials Research ExpressIn this research, the electro-gas welding process was compared with a shielded metal arc welding process for welding steel A573 from a mechanical properties point of view.
Mahmoud Abbas +3 more
doaj +1 more source
Review of Catenary Icing on High‐Speed Railways: Characteristics, Impact and Countermeasures
High Voltage, EarlyView.ABSTRACT The pantograph–catenary system (PCS) is the only path for electrified railway trains to acquire energy. Catenary icing during winter is a common natural phenomenon, which usually leads to the deterioration of the current quality and severely affects the operational safety of trains.
Zheng Li +7 more
wiley +1 more source
Characteristics and performance of the variable polarity plasma arc welding process used in the Space Shuttle external tank [PDF]
Significant advantages of the Variable Polarity Plasma Arc (VPPA) Welding Process include faster welding, fewer repairs, less joint preparation, reduced weldment distortion, and absence of porosity.
Hung, R. J., Lee, C. C., Liu, J. W.
core +1 more source
Study of gas-tungsten-arc welding power density Final report, 1 Jun. 1968 - 30 May 1969 [PDF]
Power density in gas tungsten arc welding with modified ...
Karlak, R. F., Pfluger, A. R.
core +1 more source
Journal of Synchrotron Radiation, EarlyView.A mobile electromagnetic levitator combined with time‐resolved synchrotron X‐ray diffraction enables in situ studies of high‐temperature phase transformations without container‐induced contamination and reveals the first direct observation of metastable phase formation in undercooled Fe–Co alloys.In situ observations of high‐temperature transformations,
Olga Shuleshova +6 more
wiley +1 more source
Mechanical Properties and Corrosion Behavior of Low Carbon Steel Weldments [PDF]
, 2013 This research involves studying the mechanical properties and corrosion behavior of low carbon steel (0.077wt% C) before and after welding using Arc, MIG and TIG welding.
Majid H. Abdulmajeed +2 more
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Occupational exposure to metal welding and cataract: A systematic review and meta‐analysis
Acta Ophthalmologica, EarlyView.Abstract Background Metal welding generates ultraviolet radiation (UVR) of cataractogenic wavelengths, and UVR emitted during welding has been associated with cataract formation, but results from prior studies are conflicting. Methods We conducted a systematic review and meta‐analysis of epidemiological studies addressing associations between ...
Jakob Bjerager +5 more
wiley +1 more source
Развитие электродуговой сварки [PDF]
, 2011 Приведены исторические сведения об открытии сварочной дуги и ее применении, основоположниках и научных направлениях в развитии электродуговой сварки, а также подготовке кадров.Historical information is resulted about discovery of welding arc and its ...
Литвинов, А. П. +1 more
core
Clinical Oral Implants Research, EarlyView.ABSTRACT Objectives To evaluate the prosthetic outcomes of implant‐assisted maxillary full‐arch restorations with ≥ 3 years of follow‐up. Materials and Methods A systematic electronic literature search was conducted in five databases to identify randomised controlled trials and prospective clinical studies involving patients who received full‐arch ...
Ethan Ng +5 more
wiley +1 more source