LUCK: Recent submissions
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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. ... -
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 ... -
Prediction of local sintering in laser beam machining of green Y-TZP ceramic
20 mai 2020, Ducobu, François; Rivière-Lorphèvre, Edouard; DEMARBAIX, Anthonin; Lauwers, Berth, HE Condorcet
Article scientifiqueAbstract : "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 ... -
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 ... -
Influence of Conventional Machining on Chemical Finishing of Ti6Al4V Electron Beam Melting Parts
26 avril 2020, Spitaels, Laurent; Ducobu, François; DEMARBAIX, Anthonin; Rivière-Lorphèvre, Edouard; Dehombreux, Pierre, HE Condorcet
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, 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 ... -
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 ... -
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 ... -
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 ... -
The bacterial world inside the plant
28 juillet 2022, HE CondorcetArticle 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 CondorcetArticle scientifiqueEditorial 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 CondorcetArticle 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. ... -
L’intervention logopédique chez l’enfant bilingue
octobre 2021, HE Robert SchumanArticle scientifiqueIntervention logopédique chez l'enfant bilingue -
Child-oriented or parent-oriented focused intervention: which is the better way to decrease children’s externalizing behaviors?
février 2017, HE Robert SchumanArticle scientifiqueResearch has tried to identify risk factors that increase the likelihood of difficulties with externalizing behavior. The relations between individual or environmental factors and externalizing behavior have been especially documented. Child-oriented and parent-oriented interventions have been designed in order to decrease externalizing behavior in preschoolers. To date, however, research has largely ... -
The observation of child behavior during parent-child interaction: the psychometric properties of the crowell procedure
avril 2017, HE Robert SchumanArticle scientifiqueThe observation of child behavior has to be made in ecologically valid contexts. Parent-child interaction was thought to be the most suitable context, since empirical evidence displayed strong associations with children’s behavioral outcomes, psychopathology, social relationships and well-being. Using clinical data from 137 caregiver-child dyads, the main goal of the current study was to test the ... -
Introducing the coding observations of parent–child interactions (COPI): an observational measure of the parental behaviours that matter for language development
2021, HE Robert SchumanArticle scientifiquePrevious studies have highlighted domains of parent--child interactions associated with language development among preschool-aged children, namely responsiveness, support to learning, affect, and control. Although many tools have been developed, no single tool has been validated among young children to allow a comprehensive observation of the parental behaviours linked with early language development. ... -
What are the effects of a parent-implemented verbal responsive intervention on preschoolers with externalizing behavior problems?
20 avril 2017, HE Robert SchumanArticle scientifiqueThis research was conducted to assess the impact of a parent-based verbal responsive intervention, aiming to enhance parents’ responsiveness and communication strategies, by way of a sample of parents and their preschool-aged children with a clinical level of externalizing behavior problems. Twenty-one parents received the intervention, consisting of eight 1.5-hour sessions. The study tested the ... -
Strategies developed by service providers to enhance treatment engagement by immigrant parents raising a child with a disability
31 décembre 2016, HE Robert SchumanArticle scientifiqueBarriers associated with treatment engagement exist at multiple levels for immigrant parents (IP) raising a child with a disability (e.g. divergent beliefs between family and service providers (SP) concerning the child’s diagnosis and treatment, poor therapeutic alliance, limited language skills, daily stresses, lack of flexibility and complexity of the health care system, the SP’s lack of training ... -
Optimiser les interactions verbales parent-enfant
2017, HE Robert SchumanLivre/Ouvrage ou monographieChapitre 4 du livre "La prise en charge des troubles du comportement du jeune enfant. Manuel à l'usage du praticien" (p. 99 à 133). Description d'un programme d'accompagnement parental en logopédie. -
Analyse de malwares et classification à l’aide de réseaux de neurones convolutionnels 1D
2021, HE en HainautActe de conférence ou de colloqueLes logiciels malveillants peuvent avoir des impacts particulièrement négatifs sur notre société, d’autant plus que celle-ci a de plus en plus recours à des systèmes informatiques. En vue de garantir la sécurité de ces systèmes, la détection et la prévention de ces logiciels malveillants sont nécessaires. Dans cette optique, l’objectif de ce travail est de procéder à une classification entre ...