The study examined microstructural factors in the MIG/MAG welding process of 3 mm and 4 mm industrial steel, leading to failures in 500 KVA power transformers. Charpy-V impact tests and microstructural analysis were conducted to correlate microstructure with impact toughness. Results revealed impurities in the weld pool, affecting weld quality and causing leaks of insulating oil.
(INSTITUTO DE TECNOLOGIA, 2015) BARROS, Marcelo André Santiago; FUJIYAMA, Roberto Tetsuo; LEITE, Jandecy Cabral; MAGALHÃES, Edilson Marques
Composite materials were used by early agricultural societies and their adoption has been driven by military technological needs. High fuel costs and strict environmental regulations have increased the demand for this technology in the civil sector. This article presents the application advantages of composites in aircraft structures, especially regarding weight reduction, lower operational costs, and environmental, social, and economic impacts. The research includes literature review, experimental studies, and comparisons with traditional metal alloys.
