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Application of design of experiments in gas nitriding of steels / Omar Khelifa 

Public ISBD Titre : Application of design of experiments in gas nitriding of steels Type de document : document électronique Auteurs : Omar Khelifa, Auteur ; Mohamed Elamine Djeghlal, Directeur de thèse ; L. Benalia, Directeur de thèse Editeur : [S.l.] : [s.n.] Année de publication : 2020 Importance : 1 fichier PDF (3.0 Mo) Présentation : ill. Note générale : Mode d'accès : accès au texte intégral par intranet. Mémoire de Projet de Fin d’Études : Métallurgie : Alger, École Nationale Polytechnique : 2020 Bibliogr. f. 92 - 93 Langues : Anglais (eng) Mots-clés : Gas  nitriding Design  of  experiments Nitrided  layer  depth Nitriding  temperature Nitriding  time Nitriding  potential Optimization 35CrMo12  Steel Index. décimale : PL01120 Résumé : This work deals with the application of Design of Experiments (DoE) method in Gas Nitriding surface thermochemical treatment of steels. The main contribution herein lies in modeling the Gas Nitriding of steels in order to compare factors effects on the Nitrided Layer (NL) depth as well as optimizing this latter for a certain value, without having to perform expensive and exhaustive experimental procedures. By applying the technique of Linear Regression on Gas Nitriding experimental data of the steel 35CrMo12, a full factorial design of three factors with three levels was created. The model was then successfully validated through statistical analysis. The results revealed that the nitriding temperature has the greatest influence on the NL depth, followed by potential, and then time. The promising part of employing Design of Experiments is establishing a mathematical equation of NL depth as function of temperature, time and potential, as this would optimize and facilitate experimental procedures. It is envisaged that this work would be the main driver for several research projects in Gas Nitriding modeling utilizing Design of Experiments. Application of design of experiments in gas nitriding of steels [document électronique] / Omar Khelifa, Auteur ; Mohamed Elamine Djeghlal, Directeur de thèse ; L. Benalia, Directeur de thèse . - [S.l.] : [s.n.], 2020 . - 1 fichier PDF (3.0 Mo) : ill. Mode d'accès : accès au texte intégral par intranet. Mémoire de Projet de Fin d’Études : Métallurgie : Alger, École Nationale Polytechnique : 2020 Bibliogr. f. 92 - 93 Langues : Anglais (eng) Mots-clés : Gas  nitriding Design  of  experiments Nitrided  layer  depth Nitriding  temperature Nitriding  time Nitriding  potential Optimization 35CrMo12  Steel Index. décimale : PL01120 Résumé : This work deals with the application of Design of Experiments (DoE) method in Gas Nitriding surface thermochemical treatment of steels. The main contribution herein lies in modeling the Gas Nitriding of steels in order to compare factors effects on the Nitrided Layer (NL) depth as well as optimizing this latter for a certain value, without having to perform expensive and exhaustive experimental procedures. By applying the technique of Linear Regression on Gas Nitriding experimental data of the steel 35CrMo12, a full factorial design of three factors with three levels was created. The model was then successfully validated through statistical analysis. The results revealed that the nitriding temperature has the greatest influence on the NL depth, followed by potential, and then time. The promising part of employing Design of Experiments is establishing a mathematical equation of NL depth as function of temperature, time and potential, as this would optimize and facilitate experimental procedures. It is envisaged that this work would be the main driver for several research projects in Gas Nitriding modeling utilizing Design of Experiments.

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
EP00190	PL01120	Ressources électroniques	Bibliothèque centrale	Projet Fin d'Etudes	Disponible	Metallurgie	Téléchargeable

Documents numériques

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