https://repositorio.ifpe.edu.br/xmlui/handle/123456789/435 Thu, 13 Aug 2026 21:55:28 GMT 2026-08-13T21:55:28Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1605 Caracterização microestrutural de uma junta soldada de baixo teor de carbono obtida através do processo MIG e tendo como parâmetro variável o fluxo e pressão do gás The reality of modern industry is one of constant search for the best processes that guarantee the fulfillment of growing demands, always aligning quality and productivity, as an endless cycle in search of continuous improvement. In the metalworking industry, the welding process becomes crucial and has a great influence on the product. It is a process of joining metals and is carried out from a combination of several parameters. Among the types of welding, the MIG (Metal Inert Gas) welding is one of the most commonly found in the industrial environment due to its versatility, low cost and productivity. For this, inert gas is used to protect the region to be joined, creating a barrier against possible contaminants that negatively influence the quality of the weld. The correct selection of gases and their supply flow will guarantee a process with a minimum of discontinuities. Therefore, this work aims to study the influence of shielding gas flow on MIG welding of low carbon steel boxes for industrial batteries in an industry in the interior of Pernambuco (Brazil). To this end, a comparison of the processes was carried out by varying the gas flow and comparing them from the microstructural characterization and hardness tests. The necessary results are that the use of high gas flow values, not only does not provide more protection, but they become detrimental to the process, acting in an opposite way to what was expected. In addition, a correct selection with the reduction of gas flow conferred, in addition to better quality, a reduction in material consumption and, consequently, lower costs for the process. Wed, 22 Sep 2021 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1605 2021-09-22T00:00:00Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1387 Poluição do Rio Capibaribe: análise das Causas e Consequências no Município de Limoeiro-PE The main objective of this article is to analyze the causes and consequences of the pollution of the Capibaribe River in the municipality of Limoeiro-PE, resulting from the urbanization process. River water is an indispensable natural resource for the survival of human beings, however, over the years, mainly due to the urbanization process without adequate planning, it has contributed to causing several negative impacts around the river course. The research results were achieved through the following methodological procedures: field research, IBGE data collection, photographic records, analysis of water quality tests. The research showed that the Capibaribe river is attacked by anthropic actions, complicating the existing life in the river and its surroundings. The main factors of the river's degradation process are: domestic sewage; industrial activities; deforestation of riparian forest, improper disposal of solid waste, presence of baronesses in the riverbed, which is considered a bioindicator of water pollution, change in water color in some periods of the year due to the eutrophication process, reporting to the self-contamination index by: phosphorus, nitrate and the presence of coliforms, contextualizing this scenario. Sat, 17 Jul 2021 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1387 2021-07-17T00:00:00Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1542 Projeto de um concentrador solar parabólico composto (CPC) para aplicação em dessalinizador solar no agreste de Pernambuco The use of solar collectors or concentrators for water desalination is an old technology that is present in the life of a community that suffers from long periods of drought, and has reservoirs with the concentrated presence of salts, resulting in a brackish water resource. This type of technology offers a low-cost alternative for installation, combined with simple, cheap and low-recurrence maintenance, in addition to having a negligible or non-existent cost with the daily energy supply. The present work aims to design a compound parabolic solar concentrator, to be applied in a desalinator in a city in the interior of Pernambuco, called Caruaru. The work addresses geometric factors, such as concentration ratio, parabola geometry and optical efficiency, bringing a mathematical and graphical approach to the concentrator, as well as surveys about the energy collected by the absorber tube, taking into account the characteristic losses for a CPC of Evacuated Tubes. Sun, 20 Mar 2022 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1542 2022-03-20T00:00:00Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2268 A influência da ocupação desordenada nas estradas federais em sinistros de trânsito : estudo de caso na Br-408 This study aimed to analyze the relationship between the number of traffic crashes on highways and the irregular occupation of the Federal Government's right-of-way, particularly by small commercial establishments. The research adopted a mixed-methods approach, using bibliographic and documentary research, analysis of official data from the Integrated Highway Operations System (SIOR/DNIT), and an on-site questionnaire with semi-structured interviews conducted with 14 of the 19 merchants identified at the location. The results showed a predominance of rear-end collisions, accounting for 68% of the recorded crashes, mainly associated with sudden reductions in vehicle speed. The study aimed to identify the reasons for the irregular occupations in order to propose solutions that could be implemented in the short and medium term, with the aim of ensuring compliance with specific legislation while respecting the social rights established by the Brazilian Constitution. The interviews revealed that the merchants' continued presence within the right-of-way stems from the lack of formal employment opportunities. The study concludes that irregular occupation contributes to increased exposure to road safety risks, highlighting the need for integrated actions involving engineering, land-use planning, and socioeconomic inclusion. Wed, 01 Jul 2026 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2268 2026-07-01T00:00:00Z