Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis

Laser cutting is a non-traditional cutting process and cutting of square blank in stainless steel-304 sheets cause heat affected zone (HAZ) and thermal stress. Formation of HAZ is undesirable and excessive stress cause surface defects. Thus, it is necessary to analyze them intensively. The process o...

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Main Authors:	A.M. Sifullah, Ahmed, Khaled I., Y. Nukman, M.A. Hassan, A. Hossain
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:	http://journalarticle.ukm.my/11065/ http://journalarticle.ukm.my/11065/ http://journalarticle.ukm.my/11065/1/10%20A.M%20Sifullah.pdf

id	ukm-11065
recordtype	eprints
spelling	ukm-110652017-12-12T05:21:23Z http://journalarticle.ukm.my/11065/ Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis A.M. Sifullah, Ahmed, Khaled I. Y. Nukman, M.A. Hassan, A. Hossain, Laser cutting is a non-traditional cutting process and cutting of square blank in stainless steel-304 sheets cause heat affected zone (HAZ) and thermal stress. Formation of HAZ is undesirable and excessive stress cause surface defects. Thus, it is necessary to analyze them intensively. The process of laser cutting is a complex thermo-mechanical process. Hence, in this study a thermo-mechanical finite element model has been introduced by ANSYS to predict the temporal variation together with thermal stress and width of heat affected zone (HAZ). CO2 laser is used to cut 10 × 10 mm square blank in a 3 mm thick stainless steel-304 sheet. Optical microscope and SEM are used to analyse the parametric effect on surface quality at the cutting edge. The results showed that maximum temperature at the cutting edge is about to melting temperature and independent to laser power and cutting speed. Importantly, cutting speed has significant effect on rate of temperature variation. Moreover, the width of HAZ increases with the increase of laser power and decrease of cutting speed. However results of ANOVA suggested that laser power is the most significant parameter having 64.21% of contribution to width of HAZ. Furthermore, maximum stress is observed at the corner; which is supported by SEM analysis. Penerbit Universiti Kebangsaan Malaysia 2017-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11065/1/10%20A.M%20Sifullah.pdf A.M. Sifullah, and Ahmed, Khaled I. and Y. Nukman, and M.A. Hassan, and A. Hossain, (2017) Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis. Sains Malaysiana, 46 (5). pp. 755-762. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num5_2017/contentsVol46num5_2017.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Laser cutting is a non-traditional cutting process and cutting of square blank in stainless steel-304 sheets cause heat affected zone (HAZ) and thermal stress. Formation of HAZ is undesirable and excessive stress cause surface defects. Thus, it is necessary to analyze them intensively. The process of laser cutting is a complex thermo-mechanical process. Hence, in this study a thermo-mechanical finite element model has been introduced by ANSYS to predict the temporal variation together with thermal stress and width of heat affected zone (HAZ). CO2 laser is used to cut 10 × 10 mm square blank in a 3 mm thick stainless steel-304 sheet. Optical microscope and SEM are used to analyse the parametric effect on surface quality at the cutting edge. The results showed that maximum temperature at the cutting edge is about to melting temperature and independent to laser power and cutting speed. Importantly, cutting speed has significant effect on rate of temperature variation. Moreover, the width of HAZ increases with the increase of laser power and decrease of cutting speed. However results of ANOVA suggested that laser power is the most significant parameter having 64.21% of contribution to width of HAZ. Furthermore, maximum stress is observed at the corner; which is supported by SEM analysis.
format	Article
author	A.M. Sifullah, Ahmed, Khaled I. Y. Nukman, M.A. Hassan, A. Hossain,
spellingShingle	A.M. Sifullah, Ahmed, Khaled I. Y. Nukman, M.A. Hassan, A. Hossain, Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis
author_facet	A.M. Sifullah, Ahmed, Khaled I. Y. Nukman, M.A. Hassan, A. Hossain,
author_sort	A.M. Sifullah,
title	Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis
title_short	Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis
title_full	Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis
title_fullStr	Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis
title_full_unstemmed	Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis
title_sort	laser cutting of square blanks in stainless steel-304 sheets: haz and thermal stress analysis
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2017
url	http://journalarticle.ukm.my/11065/ http://journalarticle.ukm.my/11065/ http://journalarticle.ukm.my/11065/1/10%20A.M%20Sifullah.pdf
first_indexed	2023-09-18T19:59:13Z
last_indexed	2023-09-18T19:59:13Z
_version_	1777406735475015680

Laser cutting of square blanks in stainless steel-304 sheets: HAZ and thermal stress analysis

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