Effect of Overlapping of Peen Spots on Residual Stresses in Laser-Peened Aluminium Sheets

In this study, two different laser peening systems were employed to investigate the effect of overlapping on the resulting residual stress fields. For each laser peening system, 2.0-mm-thick aluminium sheets were laser peened with different amounts of overlapping. The residual stresses after laser p...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2019-03, Vol.50 (3), p.1109-1112
Hauptverfasser:	Toparli, M. Burak, Fitzpatrick, Michael E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Characterization and Evaluation of Materials Chemistry and Materials Science Communication Compressive properties Lasers Materials Science Metal sheets Metallic Materials Nanotechnology Peening Residual stress Stress distribution Structural Materials Surfaces and Interfaces Thin Films
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Zusammenfassung:	In this study, two different laser peening systems were employed to investigate the effect of overlapping on the resulting residual stress fields. For each laser peening system, 2.0-mm-thick aluminium sheets were laser peened with different amounts of overlapping. The residual stresses after laser peening were measured by incremental hole drilling. It was shown for both laser peening systems, that an increase in amount of overlapping induced higher magnitude compressive and deeper residual stress fields.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-018-05100-0