Contribution to euspen’s 20th International Conference & Exhibition (Geneva, CH, June 2020) Abstract : "The ceramic microcomponents have very interesting mechanical and thermal properties in an extreme environment such as a high temperature, a corrosive environment, etc. Unfortunately, the principal limitation of ceramic material usage is its shaping because of the brittlness of the material. ...

"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 ...

Abstract ; "Nowadays, the additive manufacturing of multifunctional materials is booming. The fused deposition modeling (FDM) process is widely used thanks to the ease with which multimaterial parts can be printed. The main limitation of this process is the mechanical properties of the parts obtained. New continuous-fiber FDM printers significantly improve mechanical properties. Another limitation ...

"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 ...

"The invention relates to an apparatus configured to detect and measure in real time an electrical response from an electrical component exposed to ionizing radiation." Participation d'un chercheur de la HEPH-Condorcet mais le brevet est déposé par l'UMons : https://orbi.umons.ac.be/handle/20.500.12907/45680

"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 ...

"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 ...

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 ...

"The goal of this research is to analyze the impact of chemical etching on parts produced by electron beam melting. Given that the surface conditions are poor (Ra between 25 to 35 µm), an enhancement of these is asked. Dimensional and surface measurements were realized on conceived parts. Different exposure times were tested. The impact of these times on surface quality was evaluated. To help ...

" This article aims to make a review of the existing benchmark artifacts and to summarize the main requirements chosen by authors. From this state of the art, a new benchmark artifact is proposed by adapting an existing one to fulfil its missing characteristics. Measurements possibilities in terms of dimensions are enumerated and organized using ISO 286 dimensional intervals as presented in the ...