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An analysis of key process parameters for hybrid manufacturing by material extrusion and CNC machining

Bio-Design and Manufacturing 2018年第4期1卷 237-244页

作者： ruben paz Javier Santamarta Mario D.Monzon Joshua Garcfa Eujin Pei Departamento de Ingenierfa Mecainica Universidad de Las Palmas de Gran CanariaLas Palmas de Gran Canaria 35017 Spain Institute of Materials and Manufacturing Brunel University LondonKingston LaneUxbridge UB83PHUK

Hybrid Manufacturing combines the advantages of Additive Manufacturing (AM)and Subtractive Manufacturing on a single *** previous research has provided a good background of the manufacturing parameters,the analysis is often carried out separately and there is a lack of combined *** purpose of this research is to examine the influence of the main manufacturing parameters involved in AM and subtracfive processes using different ***,the study is focused on the Material Extrusion process concerning the layer height,fill angle and fill density;as well as two factors related to machining,including stepover and pass *** parameters that were examined include the dimension,hardness, flatness,weight and roughness.A mulfifactofial Design of Experiments was proposed with a total of 64 ***,a statistical analysis was carried out to assess the influence of the different groups on the response ***,a decision table presented and facilitated the selection of parameters depending on the desired objectives,leading to a framework that was applied to a case study for *** decision guide could enable designers and engineers to select the best strategy for a specific application,leading to a more efficient approach for manufacturing.

关键词： Hybrid manufacturing Material extrusion Additive manufacturing Subtractive manufacturing ~Machining Statistical analysis

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The need to develop tailored tools for improving the quality of thematic bibliometric analyses: Evidence from papers published in Sustainability and Scientometrics

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Journal of Data and Information Science 2023年第4期8卷 10-35页

作者： Alvaro Cabezas-Clavijo Yusnelkis Milanés-Guisado ruben Alba-Ruiz Ángel MDelgado-Vázquez Universidad Internacional de La Rioja(UNIR) Avenida de la Paz137Logroño26006Spain Universidad Pablo de Olavide Ctra.de UtreraKm 1Sevilla41013Spain Hospital Universitario Virgen de las Nieves Avenida de las Fuerzas Armadas2Granada 18014Spain

Purpose: The aim of this article is to explore up to seven parameters related to the methodological quality and reproducibility of thematic bibliometric research published in the two most productive journals in bibliometrics, Sustainability(a journal outside the discipline) and Scientometrics, the flagship journal in the ***/methodology/approach: The study identifies the need for developing tailored tools for improving the quality of thematic bibliometric analyses, and presents a framework that can guide the development of such tools. A total of 508 papers are analysed, 77% of Sustainability, and 23% published in Scientometrics, for the 2019-2021 ***: An average of 2.6 shortcomings per paper was found for the whole sample, with an almost identical number of flaws in both journals. Sustainability has more flaws than Scientometrics in four of the seven parameters studied, while Scientometrics has more shortcomings in the remaining three *** limitations: The first limitation of this work is that it is a study of two scientific journals, so the results cannot be directly extrapolated to the set of thematic bibliometric analyses published in journals from all *** implications: We propose the adoption of protocols, guidelines, and other similar tools, adapted to bibliometric practice, which could increase the thoroughness, transparency, and reproducibility of this type of ***/value: These results show considerable room for improvement in terms of the adequate use and breakdown of methodological procedures in thematic bibliometric research, both in journals in the Information Science area and journals outside the discipline.

关键词： Thematic bibliometric analyses Sustainability Scientometrics Reproducibility Methodological quality

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