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Robson Bruno Dutra Pereira
University of Aveiro
22Publications
6H-index
68Citations
Publications 22
Newest
#1Rafaela Aparecida Mendonça Marques (UFSJ: Universidade Federal de São João del-Rei)
#2Robson Bruno Dutra Pereira (University of Aveiro)H-Index: 6
Last.J. Paulo Davim (University of Aveiro)H-Index: 54
view all 6 authors...
Abstract Several measurement tasks present multivariate nature. In the cases with quality characteristics highly correlated within groups, but with a relatively small correlation between groups, the available multivariate GR&R methods are not suitable to provide a correct interpretation of the results. The present work presents a new multivariate GR&R approach through factor analysis. Factor analysis is a multivariate statistical method which focuses on the explanation of the covariance structur...
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Modern industry faces a great challenge: the production of consumer goods based on a triangle comprising low costs, low production time and high quality. The optimisation of modern manufacturing pr...
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#1R. E. R. Pacheco (University of Aveiro)
#2Carlos Henrique Lauro (University of Aveiro)H-Index: 10
Last.João Paulo Davim (University of Aveiro)H-Index: 21
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Drilling is one of the most popular machining operations in industry. It is employed for manufacturing a large number of materials (e.g. steel, aluminium, and composite) and in various sectors (e.g. aeronautic, automotive, and medical). Nowadays, increasing productivity and reducing costs, without compromising the quality of the products, are two main objectives for most manufacturing companies. In machining, the increase in the feed rate can cause the reduction in the cutting time and, thus, in...
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Tapping process is an important machining process to produce internal threads with accuracy, quickness, and low costs. The constant study of the tapping process is necessary due to the value added to the product when the tapping step occurs. The threading operation is the last manufacturing process used in a component having one or more threaded regions. Thus, because several manufacturing processes were used before the threading process, the value added to the product is significant, and the lo...
1 CitationsSource
Helical milling is a hole-making process which can be applied to achieve high-quality finished boreholes in hardened steels. Due to the drilling process limitations, which are intensified when applied in hardened steels, the helical milling process can be applied on hole-making tasks in moulds and dies industry, since milling have been widely applied in moulds and dies machining to replace high-cost operations like grinding and electrical discharge machining. However, to succeed in achieving hig...
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The algebraic and statistical models have assumed an essential role to better understand the relationship of the cutting parameters and their interactions in the cutting forces. This work evaluated the effects of cutting speed, feed rate, and depth of cut on the cutting force (Fc) and specific cutting force (kS) in the turning of the Ti-6Al-4V and Ti-6Al-7Nb titanium alloys. The experimental tests were carried out with two different insert tools under dry conditions. A response surface method wa...
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#2Laila Alves da Silva (UNIFEI: Universidade Federal de Itajubá)H-Index: 1
Last.J. Paulo Davim (University of Aveiro)H-Index: 54
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Abstract Helical milling is a hole-making process which has been applied in hardened materials. Due to the difficulties on achieving high-quality boreholes in these materials, the influence of noise factors, and multi-quality performance outcomes, this work aims the multi-objective robust design of hole quality on AISI H13 hardened steel. Experiments were carried out through a central composite design considering process and noise factors. The process factors were the axial and tangential feed p...
2 CitationsSource
The paper aims to analyze the use of helical milling in hole enlargement in aluminum alloys, considering the effects of the input variables (tool overhang, cutting speed, axial and tangential feed per tooth) on the output ones related to the hole quality such as radial force, circularity and roughness. Additionally, the robust optimization is developed through the combination of robust parameter design, mean square error, and normal boundary intersection through responses modeled by response sur...
2 CitationsSource
Grinding is a finishing operation widely used in the production of mechanical components that need high tolerance, less form errors, and excellent surface quality. Using the correct cutting strategy in grinding can generate better results by minimizing the amount of cooling fluids, improving surface roughness and decreasing cutting forces. The main aim of this work was to produce analyses of the surface roughness, shear strengths, and microhardness related to the variation of cutting parameters....
2 CitationsSource
#1Robson Bruno Dutra Pereira (University of Aveiro)H-Index: 6
#2Rodrigo Reis LeiteH-Index: 3
Last.J. Paulo Davim (University of Aveiro)H-Index: 54
view all 7 authors...
Helical milling is an advanced hole-making process and different approaches considering controllable variables have been presented addressing modeling and optimization of machining forces in helical milling. None of them considers the importance of the noise variables and the fact that machining forces components are usually correlated. Exploring this issue, this paper presents a multivariate robust modeling and optimization of cutting forces of the helical milling of the aluminum alloy Al 7075....
6 CitationsSource
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