Probing Reliability of Transport Phenomena Based Heat Transfer and Fluid Flow Analysis in Autogeneous Fusion Welding Process

Autor: Swarup Bag, Amitava De
Přispěvatelé: Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Department of Mechanical Engineering [Bombay], Indian Institute of Technology Bombay (IIT Bombay)
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Metallurgical and Materials Transactions A
Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2010, 41 (9), pp.Pages 2337-2347. ⟨10.1007/s11661-010-0272-9⟩
ISSN: 2381-3652
1073-5623
Popis: International audience; The transport phenomena based heat transfer and fluid flow calculations in weld pool require a number of input parameters. Arc efficiency, effective thermal conductivity, and viscosity in weld pool are some of these parameters, values of which are rarely known and difficult to assign a priori based on the scientific principles alone. The present work reports a bi-directional three-dimensional (3-D) heat transfer and fluid flow model, which is integrated with a real number based genetic algorithm. The bi-directional feature of the integrated model allows the identification of the values of a required set of uncertain model input parameters and, next, the design of process parameters to achieve a target weld pool dimension. The computed values are validated with measured results in linear gas-tungsten-arc (GTA) weld samples. Furthermore, a novel methodology to estimate the overall reliability of the computed solutions is also presented.
Databáze: OpenAIRE