Résultat de
votre recherche
Voici les éléments 11-20 de 30
Experimental investigation on green ceramic machining with nanosecond laser source
03 décembre 2020,
- HE Condorcet
,
- Article scientifique
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. ...
Prediction of local sintering in laser beam machining of green Y-TZP ceramic
20 mai 2020,
- HE Condorcet
,
- Article scientifique
Article scientifique
Abstract : "Laser beam machining of Y-TZP engineering ceramic material is carried out in green stage to increase the material removal rate. The generation of hot spots may cause local sintering of the ceramic material leading to a decrease of the mechanical properties of the final sintered component. This paper presents the implementation of alternative laser beam paths to reduce the hot spots ...
Influence of Conventional Machining on Chemical Finishing of Ti6Al4V Electron Beam Melting Parts
26 avril 2020,
- HE Condorcet
,
- Acte de conférence ou de colloque
Acte de conférence ou de colloque
"Additive manufacturing is feeding great hopes for future developments in fields such as aeronautical, biomedical and rapid tooling industrssssies. However, limitations are still restricting its use to make prototypes and hampering mass production. In the case of titanium alloy printing (e.g. Ti6Al4V) with the EBM (Electron Beam Melting) process, the major obstacle to use parts directly after printing ...
Binder influence on green ceramic machining by means of milling and laser machining
06 septembre 2021,
- HE Condorcet
,
- Acte de conférence ou de colloque
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 ...
Dimensional and geometrical performance assessment of two FDM printers using a benchmark artifact
03 juin 2022,
- HE Condorcet
,
- Acte de conférence ou de colloque
Acte de conférence ou de colloque
"In this article, dimensional and geometrical performances of two Fused Deposition Modelling (FDM) printers with Cartesian architecture (Ultimaker S3 and Intamsys FUNMAT HT) are compared using an original benchmark artifact design. Five parts were printed on each printer in ABS. Five other parts were also produced with the Ultimaker S3 in PLA to show the influence of material choice on the printer’s ...
An Experimental Setup Based On a Printable System for the Acquisition of the Real-Time Electrical Response of Irradiated Semiconductor Devices
12 décembre 2022,
- HE Condorcet
,
- Article scientifique
Article scientifique
"This paper proposes a portable 3D printed test set-up allowing to realize this transient measurement while ensuring no interaction with the outside world. Moreover the setup proposes a variation of distance to favor or not the interaction of the semiconductor with the ionizing radiation source. The main advantages of the proposed 3D setup is its adaptability to any kind of radiation source geometry ...
Adaptive benchmarking design for additive manufacturing processes
17 mars 2022,
- HE Condorcet
,
- Article scientifique
Article scientifique
"Standards enabling the objective tolerancing and evaluation of dimensional and geometrical performances of additive manufacturing (AM) printers are still missing. The design, printing and measurements of geometrical benchmark test artefacts (GBTA) is the current solution proposed in literature. However, the current GBTA with fixed dimensions cannot cover most of the available printing area of ...
The bacterial world inside the plant
28 juillet 2022,
- HE Condorcet
,
- Article scientifique
Article scientifique
"This review provides an overview of the current research, including the concept of endophytes, endophytes in plant organs, endophyte colonization, nutrient e ciency use, endophytes and crop nutrition, inoculation with synergistic bacteria, the eect of inoculum concentration on plant root microbiota and synthetic communities. It also examines the practical opportunities and challenges when utilizing ...
Editorial: Microbial services for sustainable agriculture
05 septembre 2022,
- HE Condorcet
,
- Article scientifique
Article scientifique
Editorial on the Research Topic : Microbial services for sustainable agriculture
Effect of the application of vermicompost and millicompost humic acids about the soybean microbiome under water restriction conditions
04 novembre 2022,
- HE Condorcet
,
- Article scientifique
Article scientifique
"This study aimed to evaluate the responses of soybean plants to the application of vermicompost HA (HA-V) and millicompost (HA-M) along with Bradyrhizobium sp. under water restriction. The experiment was carried out in a greenhouse, and the treatments received Bradyrhizobium sp. inoculation with or without the application of HA from vermicompost and millicompost with or without water restriction. ...