Franck Andrés GIROT MATA

Prof. Franck Andrés GIROT MATA

Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), 48013 Bilbao, Spain
orcid

Research Focus & Metrics

Academic Career Length

40Years (1987-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2008 in International Journal of Machine Tools and Manufacture
Verified
Journal Article
Closed access
MCMadalina Calamaz
Madalina Calamaz
DCDominique Coupard
Dominique Coupard
Franck Andrés GIROT MATAFranck Andrés GIROT MATA
Franck Andrés GIROT MATA

31 July 2018 in Materials
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Journal Article
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Ana Pilar Valerga PuertaAna Pilar Valerga Puerta
Ana Pilar Valerga Puerta
Moises Batista PonceMoises Batista Ponce
Moises Batista Ponce
Jorge SalgueroJorge Salguero
Jorge Salguero
Franck Andrés GIROT MATAFranck Andrés GIROT MATA
Franck Andrés GIROT MATA
Additive manufacturing technologies play an important role in Industry 4.0. One of the most prevalent processes is fused deposition modelling (FDM) due to its versatility and low cost. However, there is still a lack of standardization of materials and procedures within this technology. This work aims to study the relationship of certain operating parameters and the conditions of poly(lactic acid) (PLA) polymer with the results of the manufactured parts in dimensional terms, surface quality, and mechanical strength. In this way, the impact of some material characteristics is analyzed, such as the pigmentation of the material and the environmental humidity where it has been stored. The manufacturing parameter that relates to these properties has been the extrusion temperature since it is the most influential in this technology. The results are quite affected especially by humidity, being a parameter little studied in the literature.

1 January 1987 in Composites Science and Technology
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Journal Article
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Franck Andrés GIROT MATAFranck Andrés GIROT MATA
Franck Andrés GIROT MATA
JQJ.M. Quenisset
J.M. Quenisset
RNR. Naslain
R. Naslain

1 February 2017 in Journal of Materials Processing Technology
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Journal Article
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Franck Andrés GIROT MATAFranck Andrés GIROT MATA
Franck Andrés GIROT MATA
FDFrédéric Dau
Frédéric Dau
MGMª Esther Gutiérrez-Orrantia
Mª Esther Gutiérrez-Orrantia

9 August 2020 in Crystals
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Trunal DhawaleTrunal Dhawale
Trunal Dhawale
Fernando Veiga-SuárezFernando Veiga-Suárez
Fernando Veiga-Suárez
ASAlfredo Suarez
Alfredo Suarez
EIEdurne Iriondo
Edurne Iriondo
Franck Andrés GIROT MATAFranck Andrés GIROT MATA
Franck Andrés GIROT MATA
Wire Arc Additive Manufacturing (WAAM) is one of the most appropriate additive manufacturing techniques for producing large-scale metal components with a high deposition rate and low cost. Recently, the manufacture of nickel-based alloy (IN718) using WAAM technology has received increased attention due to its wide application in industry. However, insufficient information is available on the mechanical properties of WAAM IN718 alloy, for example in high-temperature testing. In this paper, the mechanical properties of IN718 specimens manufactured by the WAAM technique have been investigated by tensile tests and hardness measurements. The specific comparison is also made with the wrought IN718 alloy, while the microstructure was assessed by scanning electron microscopy and X-ray diffraction analysis. Fractographic studies were carried out on the specimens to understand the fracture behavior. It was shown that the yield strength and hardness of WAAM IN718 alloy is higher than that of the wrought alloy IN718, while the ultimate tensile strength of the WAAM alloys is difficult to assess at lower temperatures. The microstructure analysis shows the presence of precipitates (laves phase) in WAAM IN718 alloy. Finally, the effect of precipitation on the mechanical properties of the WAAM IN718 alloy was discussed in detail.

11 August 2010 in Machining Science and Technology
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Journal Article
Closed access
MCMadalina Calamaz
Madalina Calamaz
DCDominique Coupard
Dominique Coupard
Franck Andrés GIROT MATAFranck Andrés GIROT MATA
Franck Andrés GIROT MATA
In this study, the commercial finite element software FORGE2005®, able to solve complex thermo-mechanical problems is used to model titanium alloy dry machining. One of the main machining characteristics of titanium alloys is to produce a special chip morphology named “saw-tooth chip” or serrated chip for a wide range of cutting speeds and feeds. The mechanism of saw-tooth chip formation is still not completely understood. Among the two theories about its formation, this study assumes that chip segmentation is only induced by adiabatic shear band formation and thus no material failure occurs in the primary shear zone. Based on the assumption of material strain softening, a new material law was developed. The aim of this study is to analyze the newly developed model's capacity to correctly simulate the machining process. The model validation is based on the comparison of experimental and simulated results, such as chip formation, global chip morphology, cutting forces and geometrical chip characteristics. A good correlation was found between the experimental and numerical results, especially for cutting speeds generating low tool wear.