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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Al-Khwarizmi College of Engineering – University of Baghdad
2015
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oai:doaj.org-article:e442de802a9e40d580df949b556ccabe2021-12-02T04:16:22ZLaser Peening on Aluminum Alloy 7049 Using Black Paint Surface Coating1818-11712312-0789https://doaj.org/article/e442de802a9e40d580df949b556ccabe2015-06-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/254https://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) |
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Keywords: Constant and variable fatigue behavior , Black paint laser peening , 7049 Al- alloy . Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 |
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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 |
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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/e442de802a9e40d580df949b556ccabe |
work_keys_str_mv |
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