Parcourir Sciences Et Techniques par auteur "ddc4146c47e8fae8245eca2a86105484367a62ab"
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Adaptive benchmarking design for additive manufacturing processes
17 mars 2022, Spitaels, Laurent; Rivière-Lorphèvre, Edouard; DEMARBAIX, Anthonin
; Ducobu, François, HE Condorcet
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 ... -
Additively Manufactured Multifunctional Composite Parts with the Help of Coextrusion Continuous Carbon Fiber: Study of Feasibility to Print Self-Sensing without Doped Raw Material
25 août 2023, DEMARBAIX, Anthonin; Ochana, Imi; Levrie, Julien; Coutinho, Isaque; Cunha, Sebastião Simões Jr.; Moonens, Marc, HE Condorcet
Article scientifiqueAbstract ; "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 ... -
Analyzing apparatus
Brevet"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 -
Autonomous Virtual Reality Integration for Active Thermography : Engineering Education and Experimentation
03 septembre 2205, Strazzeri, Ilario; Notebaert, Arnaud; Smets, Florian; Barros, Camila; Quinten, Julien; DEMARBAIX, Anthonin, HE Condorcet
Acte de conférence ou de colloqueInternational Conference, XR Salento 2025, Otranto, Italy, June 17–20 2025 Abstract : "The present study sets out the development and evaluation of an autonomous virtual reality (VR) environment designed to enhance the teaching and experimentation of active thermography in engineering education. This paper builds upon a previous version (VR_1), the limitations of which were revealed to be related ... -
Behaviour of pre-sintered Y-TZP during machining operations: Determination of recommended cutting parameters
06 février 2018, DEMARBAIX, Anthonin; 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 machining
06 septembre 2021, DEMARBAIX, Anthonin; 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 machining
2019, DEMARBAIX, Anthonin; Rivière-Lorphèvre, Edouard; Ducobu, François; Dolimont, Adrien; Petit, Fabrice; Juste, Enrique, HE Condorcet
Acte de conférence ou de colloqueContribution 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 CDIO approach in a FabLab activity for engineering education promotion
Acte de conférence ou de colloqueAbstract : "The number of FabLabs has been steadily increasing over the last few years. Their main objectives are to sensitize its public on Science, Technology, Engineering, and Math (STEM) education through the digital manufacturing chain of an object and to allow the large public to make their own objects. Through, the increasing popularization of these advanced technologies, it becomes more ... -
Characterization of Defects by Non-Destructive Impulse Excitation Technique for 3D Printing FDM Polyamide Materials in Bending Mode
25 juillet 2025, Jabri, Fatima-Ezzahrae; Ochana, Imi; Ducobu, François; El Alaiji, Ra; DEMARBAIX, Anthonin, HE Condorcet
Article scientifiqueAbstract : "The presented article analyzes the impact of internal defects on the modal responses of polyamide parts subjected to bending. Samples with defects of various sizes (0, 3, 5, 7, and 10 mm) located at the neutral bending line were tested. Modal properties were measured via an acoustic and a vibration sensor, using impulse excitation and fast Fourier transform (FFT) analysis. Modal properties ... -
Chemical etching as a finishing process for electron beam melting (EBM) parts
02 juillet 2019, Dolimont, Adrien; DEMARBAIX, Anthonin; Ducobu, François; Rivière-Lorphèvre, Edouard, HE Condorcet
Acte de conférence ou de colloque"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 ... -
A Comparative Study of Non-Destructive Testing Techniques: Active Thermography versus Shearography for 3D-Printed Thermoplastic Composites Reinforced with Continuous Carbon Fiber
11 octobre 2024, Ochana, Imi; Ducobu, François; Khalil Omrani, Mohamed; Notebaert, Arnaud; DEMARBAIX, Anthonin, HE Condorcet
Article scientifiqueAbstract: "This study investigates the feasibility and effectiveness of two non-destructive testing methods, active thermography and shearography, on 3D-printed thermoplastic (TP) composites reinforced with continuous carbon fiber. Artificial defects were introduced into the composite plate to benchmark the detection capabilities of these non-destructive testing techniques (NDT). Active thermography ... -
Design of experiment on smart materials: tensile test on 3D printed composites reinforced with continuous carbon fiber and resistivity detection
05 juillet 2025, Ochana, Imi; Ducobu, François; Homrani, Mohamed Khalil; DEMARBAIX, Anthonin, HE Condorcet
Acte de conférence ou de colloqueDans le cadre de la 28e "International ESAFORM Conference on Material forming", du 7 au 9 mai 2025 à Paestum en Italie. Abstract : "Structural Health Monitoring (SHM) refers to the process of continuously assessing the condition of materials and structures to detect damage, degradation, or performance changes over time. It uses sensors integrated into materials to monitor their behavior, enabling ... -
Development of a novel benchmark artifact for Additive Manufacturing processes
10 juin 2021, Spitaels, Laurent; Rivière-Lorphèvre, Edouard; DEMARBAIX, Anthonin; Ducobu, François, HE Condorcet
Acte de conférence ou de colloque" 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 ... -
Development of the hybrid sequential machining: laser machining and milling
2016, DEMARBAIX, Anthonin; 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 ... -
Dimensional and geometrical performance assessment of two FDM printers using a benchmark artifact
03 juin 2022, Spitaels, Laurent; Rivière-Lorphèvre, Edouard; DEMARBAIX, Anthonin; Thielens, Vincent; Ducobu, François, HE Condorcet
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 ... -
Experimental investigation on green ceramic machining with nanosecond laser source
03 décembre 2020, DEMARBAIX, Anthonin; Ducobu, François; Juste, Enrique; Petit, Fabrice; Duterte, Charles; Rivière-Lorphèvre, Edouard, HE Condorcet
Article scientifiqueAbstract : "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. ... -
An Experimental Setup Based On a Printable System for the Acquisition of the Real-Time Electrical Response of Irradiated Semiconductor Devices
12 décembre 2022, Quenon, Alexandre; DEMARBAIX, Anthonin; Daubie, Evelyne; Moyaert, Véronique; Dualibe, Fortunato Carlos, HE Condorcet
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 ... -
Finite element modelling of the Taylor impact test in 3D with the Coupled Eulerian-Lagrangian method
Acte de conférence ou de colloqueContribution to ESAFORM2021. Abstract : "When modelling a cutting operation, the constitutive model of the machined material is one of the key parameters to obtain accurate and realistic results. Up to now, the Johnson-Cook model is still the most used, even if an increasing number of models, such as the Hyperbolic TANgent (TANH) model, were introduced last years to overcome its limitations and ... -
Framework for determining and simulating tensile properties of smart composite FDM printed parts
07 mai 2025, Homrani, Mohamed Khalil; DEMARBAIX, Anthonin; Ochana, Imi; Ducobu, François, HE Condorcet
Acte de conférence ou de colloqueAbstract : "Fused deposition modeling (FDM) is an additive manufacturing technique with good precision and moderate tolerances. Utilizing Finite Element Analysis (FEA) in literature is now key to studying the properties of these printed parts. The nature of the FDM process results in anisotropic inner structures with microscopic voids that are heavily affected by printing parameters. Even more so ... -
Green Ceramic Machining: Determination of the Recommended Feed Rate for Y-TZP Milling
01 septembre 2021, DEMARBAIX, Anthonin; Mulliez, Marylou; Rivière-Lorphèvre, Edouard; Spitaels, Laurent; Duterte, Charles; Petit, Fabrice; Ducobu, François, HE Condorcet
Article scientifiqueAbstract : "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. ...