Hybrid realization of fillet weld

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F18%3A43953632" target="_blank" >RIV/49777513:23220/18:43953632 - isvavai.cz</a>

Result on the web

<a href="https://www.emeraldinsight.com/doi/full/10.1108/COMPEL-08-2017-0357#" target="_blank" >https://www.emeraldinsight.com/doi/full/10.1108/COMPEL-08-2017-0357#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1108/COMPEL-08-2017-0357" target="_blank" >10.1108/COMPEL-08-2017-0357</a>

Result language

angličtina

Original language name

Hybrid realization of fillet weld

Original language description

Purpose: A model of hybrid fillet welding is built and solved. No additional material (welding rod, etc.) is used. Heating of the welded parts is realized by laser beam with induction preheating and/or postheating. The purpose of these operations is to reduce the temperature gradient in welded parts in the course of both heating and cooling, which reduces the resultant hardness of the weld and its neighborhood and also reduces undesirable internal mechanical strains and stresses in material. Design/methodology/approach: The complete mathematical model of the combined welding process is presented, taking into account all relevant nonlinearities. The model is then solved numerically by the finite element method. The methodology is illustrated with an example, the results of which are compared with experiment. Findings: The proposed model provided satisfactory results even when some subtle phenomena were not taken into account (flow of melt in the pool after irradiation of the laser beam driven by the buoyancy and gravitational forces and evaporation of molten metal and influence of plasma cloud above the irradiated spot). Research limitations/implications: Accuracy of the results depends on the accuracy of physical parameters of materials entering the model and their temperature dependencies. These quantities are functions of chemical composition of the materials used, and may more or less differ from the values delivered by manufacturers. Also, the above subtle physical phenomena exhibit stochastic character and their modeling may be accompanied by non-negligible uncertainties. Practical implications: The presented model and methodology of its solution may represent a basis for design of welding processes in various branches of industry. Originality/value: The model of a complex multiphysics problem (induction-assisted laser welding) provides reasonable results confirmed by experiments.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/LO1607" target="_blank" >LO1607: RICE - New technologies and concepts for smart industrial system</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

COMPEL : the International Journal for Computation and Mathematics in Electrical and Electronic Engineering

ISSN

0332-1649

e-ISSN

—

Volume of the periodical

37

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1315-1327

UT code for WoS article

000447495900002

EID of the result in the Scopus database

2-s2.0-85053235819