EFFECT OF WELDING SEQUENCE AND THE TRANSVERSE GEOMETRY OF THE WELD OVERLAY ON THE DISTRIBUTION OF RESIDUAL STRESS IN THE WELD OVERLAY REPAIR OF T23 TUBES

Water-wall tubes are important components in power plants and are used to absorb the heat from the boilers, and they often fail prematurely due to corrosion, erosion, and fatigue during service.To repair the defects, weld overlay repair is often adopted by forming a compressive stress area around the susceptible area to prevent the cracks from prop

Abstract We present a thorough analysis of the scientific production in climate change and adaptation in Brazil.We conducted a bibliometric and bibliographic review to reveal and discuss how climate change research has been carried out.We compared a broader climate change research dataset with a more specific climate adaptation research dataset, to

The nature of caffeine reveals that it is a bitter white crystalline alkaloid.It is a common ingredient in a variety of drinks (soft and energy drinks) and is also used in combination with various medicines.In order to maintain the optimum level of caffeine, various spectrophotometric methods have been developed.The Rugby - Balls monitoring of caff