• Finite element analysis of the effect of porosity on residual stress in 2024 aluminium alloy GTAW

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Metadata

Document Title

Finite element analysis of the effect of porosity on residual stress in 2024 aluminium alloy GTAW

Author

Poolperm P., Nakkiew W., Naksuk N.

Name from Authors Collection

Poolperm P.

Scopus Author ID

57191286077

ORCID ID

NULL

|

Nakkiew W.

Scopus Author ID

12787334000

ORCID ID

NULL

|

Nirut Naksuk

Scopus Author ID

8346360800

Affiliations

Graduate Program in Industrial Engineering, Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, Thailand; Advanced Manufacturing Technology Research Center (AMTech), Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, Thailand; Automation for Material Processing Research Team, Material Processing and Manufacturing Automation Research Group, National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani, Thailand

Type

Article

Source Title

Materials Research Express

ISSN

20531591

Year

2020

Volume

7

Issue

5

Open Access

Gold

Publisher

Institute of Physics Publishing

DOI

10.1088/2053-1591/ab906a

Format

PDF

Abstract

Simulations of the welding process for butt joints using finite element analysis (FEA) of the effect of porosity are presented. The metal used was aluminium alloy (grade 2024), and the filler material was alloy ER5356. The simulations were performed using the commercial software ANSYS, considering a double ellipsoid heat source, temperature-dependent material properties, material deposits, mechanical analysis, transient heat transfer, and defects (porosity). In this study, the FEA simulations were constructed for two types of heat source (single- and double-ellipsoid) used in gas tungsten arc welding (GTAW), and the calculated residual stress results were compared with the experimental values. Two double ellipsoid models were constructed for cases with and without porosity. The porosity was measured by three-dimensional (3D) computed tomography (CT), and the size and location of pores were mapped onto the weld bead created by the birth-and-death technique. © 2020 The Author(s). Published by IOP Publishing Ltd.

Industrial Classification

N/A

Knowledge Taxonomy Level 1

N/A

Knowledge Taxonomy Level 2

N/A

Knowledge Taxonomy Level 3

N/A

Funding Sponsor

Chiang Mai University; Thailand Graduate Institute of Science and Technology; National Metal and Materials Technology Center; Advanced Manufacturing Cooperative Research Centre

License

CC BY

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Author

Publication Source

Scopus

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