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    • Behaviour of pre-sintered Y-TZP during machining operations: Determination of recommended cutting parametersPeer reviewedClosed access 

      06 février 2018, DEMARBAIX, Anthoninorcid-id; Rivière-Lorphèvre, Edouard; Ducobu, François; Filippi, Enrico; Petit, Fabrice; Preux, Nicolas, HE Condorcet
      Article scientifique
      "In this paper,the NF E 66-520-5 standard, dedicated to the determination ofthe optimal cutting parameters suitable for ductile material, is applied to the pre-sintered ceramic Y-TZP. The objective of the standard is to calculate the specific cutting energy of the forces created between the chosen tool and material during machining operation. Specific cutting energy is the energy required to remove ...

    • Binder influence on green ceramic machining by means of milling and laser machiningPeer reviewedOpen access 

      06 septembre 2021, DEMARBAIX, Anthoninorcid-id; Ducobu, François; Preux, Nicolas; Petit, Fabrice; Rivière-Lorphèvre, Edouard, HE Condorcet
      Acte de conférence ou de colloque
      "The micro manufacturing of ceramic components is technologically challenging especially when complex shapes and micro features are required. A hybrid manufacturing chain is developed for non-sintered(green) blanks machined using sequentially a cutting tool and a laser source. During the preparation of the green blank, a binder is added to the powder to improve compaction. The amount of binder can ...

    • Calibration method of hybrid machining process in the green ceramic combining micro-milling and laser machiningPeer reviewedClosed access 

      2019, DEMARBAIX, Anthoninorcid-id; Rivière-Lorphèvre, Edouard; Ducobu, François; Dolimont, Adrien; Petit, Fabrice; Juste, Enrique, HE Condorcet
      Acte de conférence ou de colloque
      Contribution to "euspen’s 19th International Conference & Exhibition, Bilbao, ES, June 2019" Abstract : "The requirements for quality amelioration of engineered products are increasingly stringent, and specially when the miniaturization and difficult-to-machine materials are considered. The development of hybrid machining processes (HMPs) answers this problem. Indeed, HMPs are variants of ...

    • Development of the hybrid sequential machining: laser machining and millingPeer reviewedClosed access 

      2016, DEMARBAIX, Anthoninorcid-id; Rivière-Lorphèvre, Edouard; Ducobu, François; Filippi, Enrico; Petit, Fabrice; Preux, Nicolas, HE Condorcet
      Acte de conférence ou de colloque
      "The aims of this paper is to study the advantages and disadvantages of laser micro-machining and the micro-milling. The final goal is to couple these processes in the same structure. The sequential hybrid process is subtractive-subtractive it combines the laser u-machining and the u-milling. The samples are machined with the two processes to compare the dimensional tolerance and the geometrical ...

    • Experimental investigation on green ceramic machining with nanosecond laser sourcePeer reviewedClosed access 

      03 décembre 2020, DEMARBAIX, Anthoninorcid-id; Ducobu, François; Juste, Enrique; Petit, Fabrice; Duterte, Charles; Rivière-Lorphèvre, Edouard, HE Condorcet
      Article scientifique
      Abstract : "Yttrium oxide tetragonal zirconia polycrystals (Y-TZP) is an inert bioceramic used for many bio-implantable applications that request a high accuracy which is difficult to achieve with the current technologies. Laser machining of hard ceramic is difficult because the interaction of the laser beam with the material can lead to microcracks and surface modifications of the microstructure. ...

    • Green Ceramic Machining: Determination of the Recommended Feed Rate for Y-TZP MillingPeer reviewedOpen access 

      01 septembre 2021, DEMARBAIX, Anthoninorcid-id; Mulliez, Marylou; Rivière-Lorphèvre, Edouard; Spitaels, Laurent; Duterte, Charles; Petit, Fabrice; Ducobu, François, HE Condorcet
      Article scientifique
      Abstract : "Manufacturing of advanced ceramic parts exhibiting complex geometries is laborious and expensive. Traditionally, the machining is carried out on a so-called ‘green ceramic’: a compact composed of ceramic powder held with the help of a binder. This difficulty is due not only to the composition of the material, but also to the lack of methods that determine optimal machining parameters. ...

    • Green Ceramic Machining: Influence of the Cutting Speed and the Binder Percentage on the Y-TZP BehaviorPeer reviewedOpen access 

      21 mai 2020, DEMARBAIX, Anthoninorcid-id; Ducobu, François; Preux, Nicolas; Petit, Fabrice; Rivière-Lorphèvre, Edouard, HE Condorcet
      Article scientifique
      Abstract : "The demand for inert bioceramics is always increasing in the dental field. Yttrium oxide tetragonal zirconia polycrystals (Y-TZP) are oxide ceramics which are currently used because of their interesting mechanical properties due to a toughening transformation. Industrially speaking, machining of the ceramic before sintering (green body) is very common because it allows a better productivity ...

    • Impact of Green Ceramic Hybrid Machining (GCHM) on Reliability and Repeatability of the Properties of Sintered Yttrium-Tetragonal Zirconia Polycrystal PartsPeer reviewedOpen access 

      20 juin 2023, Ducobu, François; DEMARBAIX, Anthoninorcid-id; Rivière-Lorphèvre, Edouard; Spitaels, Laurent; Petit, Fabrice; Preux, Nicolas; Duterte, Charles; Mulliez, Marylou; Lauwers, Bert, HE Condorcet
      Article scientifique
      Abstract : "The innovative Green Ceramic Hybrid Machining (GCHM) process sequentially combines milling with a cutting tool (GCM, Green Ceramic Machining) and laser beam machining (GCLBM) of a ceramic material (black Y-TZP in this study) at the green stage mainly to increase productivity, avoid taper angle limitations of laser beam machining, and obtain micro-features. The study focuses on ...