Documents disponibles écrits par cet auteur

Effect of Sn addition on the corrosion behavior of Ti-Ta alloy / B. Guo in Materials and corrosion, Vol. 63 N° 3 (Mars 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 3 (Mars 2012) . - pp. 259–263 Titre : Effect of Sn addition on the corrosion behavior of Ti-Ta alloy Type de document : texte imprimé Auteurs : B. Guo, Auteur ; Y. X. Tong, Auteur ; F. Chen, Auteur Année de publication : 2012 Article en page(s) : pp. 259–263 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Corrosion  resistance;  electrochemical  measurements;  solution  treatment;  Ti-Ta-Sn  alloys Résumé : In the present paper, the effect of Sn addition on phase constitution and corrosion behavior of Ti65Ta(35−x)Snx (x  = 0, 1, 3, 5 at%) alloys has been investigated using X-ray diffraction and electrochemical measurements. The results show that the β phase is stabilized when quenching after the addition of Sn into Ti65Ta35 alloy, with Ti65Ta30Sn5 alloy consisting of single β phase at room temperature. The corrosion resistance is enhanced with increase in the Sn content. When the Sn content increases up to 5%, the addition of Sn results in a decrease of corrosion current density from 0.690 µA/cm2 of the Ti65Ta35 alloy to 0.098 µA/cm2, and corresponding passive current density decreased from 37.7 µA/cm2 of the Ti65Ta35 alloy to 9.30 µA/cm2. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005824/abstract [article] Effect of Sn addition on the corrosion behavior of Ti-Ta alloy [texte imprimé] / B. Guo, Auteur ; Y. X. Tong, Auteur ; F. Chen, Auteur . - 2012 . - pp. 259–263. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 3 (Mars 2012) . - pp. 259–263 Mots-clés : Corrosion  resistance;  electrochemical  measurements;  solution  treatment;  Ti-Ta-Sn  alloys Résumé : In the present paper, the effect of Sn addition on phase constitution and corrosion behavior of Ti65Ta(35−x)Snx (x  = 0, 1, 3, 5 at%) alloys has been investigated using X-ray diffraction and electrochemical measurements. The results show that the β phase is stabilized when quenching after the addition of Sn into Ti65Ta35 alloy, with Ti65Ta30Sn5 alloy consisting of single β phase at room temperature. The corrosion resistance is enhanced with increase in the Sn content. When the Sn content increases up to 5%, the addition of Sn results in a decrease of corrosion current density from 0.690 µA/cm2 of the Ti65Ta35 alloy to 0.098 µA/cm2, and corresponding passive current density decreased from 37.7 µA/cm2 of the Ti65Ta35 alloy to 9.30 µA/cm2. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201005824/abstract

The loader problem / G. Tang in Journal of the operational research society (JORS), Vol. 61 N° 5 (Mai 2010) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 61 N° 5 (Mai 2010) . - pp. 840–848 Titre : The loader problem : formulation, complexity and algorithms Type de document : texte imprimé Auteurs : G. Tang, Auteur ; F. Chen, Auteur ; Cheng, T. C. E., Auteur Année de publication : 2010 Article en page(s) : pp. 840–848 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : Loader  problem  Integer  programming  Logistics  NP-hard  Algorithms Index. décimale : 001.424 Résumé : In this paper we consider a new transportation model, called the loader problem, which is frequently encountered by third-party logistics service providers in practice. It is a tactical staff-planning problem with the objective of minimizing the total labour cost of staffing a sufficient number of loaders on a given fleet of trucks that serve a given set of customer sites. We formulate the problem as an integer program and show that it is strongly NP-hard. We then consider two special cases of the loader problem that occur in certain practical situations, and propose polynomial and pseudo-polynomial time algorithms for solving these cases. We also propose a linear programming relaxation-based random rounding algorithm for the general problem and report the computational results of the algorithm. DEWEY : 001.424 ISSN : 0361-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v61/n5/abs/jors200955a.html [article] The loader problem : formulation, complexity and algorithms [texte imprimé] / G. Tang, Auteur ; F. Chen, Auteur ; Cheng, T. C. E., Auteur . - 2010 . - pp. 840–848. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 61 N° 5 (Mai 2010) . - pp. 840–848 Mots-clés : Loader  problem  Integer  programming  Logistics  NP-hard  Algorithms Index. décimale : 001.424 Résumé : In this paper we consider a new transportation model, called the loader problem, which is frequently encountered by third-party logistics service providers in practice. It is a tactical staff-planning problem with the objective of minimizing the total labour cost of staffing a sufficient number of loaders on a given fleet of trucks that serve a given set of customer sites. We formulate the problem as an integer program and show that it is strongly NP-hard. We then consider two special cases of the loader problem that occur in certain practical situations, and propose polynomial and pseudo-polynomial time algorithms for solving these cases. We also propose a linear programming relaxation-based random rounding algorithm for the general problem and report the computational results of the algorithm. DEWEY : 001.424 ISSN : 0361-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v61/n5/abs/jors200955a.html