Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating

Abstract Black paint laser peening (bPLP) technique is currently applied for many engineering materials , especially for aluminum alloys due to high improvement in fatigue life and strength . Constant and variable bending fatigue tests have been performed at RT and stress ratio R= -1 . The res...

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Autores principales:	H. J. M. Alalkawi, Basim A. Sadkhan, Noor N. Abed
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2015
Materias:	Keywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy . Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/68b102f82c7d433fb86a21241c708ec6
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spelling	oai:doaj.org-article:68b102f82c7d433fb86a21241c708ec62021-12-02T05:27:15ZLaser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating1818-11712312-0789https://doaj.org/article/68b102f82c7d433fb86a21241c708ec62015-06-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/244https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 Abstract Black paint laser peening (bPLP) technique is currently applied for many engineering materials , especially for aluminum alloys due to high improvement in fatigue life and strength . Constant and variable bending fatigue tests have been performed at RT and stress ratio R= -1 . The results of the present work observed that the significance of the surface work hardening which generated high negative residual stresses in bPLP specimens .The fatigue life improvement factor (FLIF) for bPLP constant fatigue behavior was from 2.543 to 3.3 compared to untreated fatigue and the increase in fatigue strength at 107 cycle was 21% . The bPLP cumulative fatigue life behavior was improved by 1.786 at L-H and 1.55 at H-L due to black paint coating . Keywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy . H. J. M. AlalkawiBasim A. SadkhanNoor N. AbedAl-Khwarizmi College of Engineering – University of BaghdadarticleKeywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy .Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 11, Iss 3 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Keywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy . Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Keywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy . Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 H. J. M. Alalkawi Basim A. Sadkhan Noor N. Abed Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating
description	Abstract Black paint laser peening (bPLP) technique is currently applied for many engineering materials , especially for aluminum alloys due to high improvement in fatigue life and strength . Constant and variable bending fatigue tests have been performed at RT and stress ratio R= -1 . The results of the present work observed that the significance of the surface work hardening which generated high negative residual stresses in bPLP specimens .The fatigue life improvement factor (FLIF) for bPLP constant fatigue behavior was from 2.543 to 3.3 compared to untreated fatigue and the increase in fatigue strength at 107 cycle was 21% . The bPLP cumulative fatigue life behavior was improved by 1.786 at L-H and 1.55 at H-L due to black paint coating . Keywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy .
format	article
author	H. J. M. Alalkawi Basim A. Sadkhan Noor N. Abed
author_facet	H. J. M. Alalkawi Basim A. Sadkhan Noor N. Abed
author_sort	H. J. M. Alalkawi
title	Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating
title_short	Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating
title_full	Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating
title_fullStr	Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating
title_full_unstemmed	Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating
title_sort	laser peening on aluminum alloy 7049 using black paint surface coating
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2015
url	https://doaj.org/article/68b102f82c7d433fb86a21241c708ec6
work_keys_str_mv	AT hjmalalkawi laserpeeningonaluminumalloy7049usingblackpaintsurfacecoating AT basimasadkhan laserpeeningonaluminumalloy7049usingblackpaintsurfacecoating AT noornabed laserpeeningonaluminumalloy7049usingblackpaintsurfacecoating
_version_	1718400416713015296

Laser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating

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