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Title of Journal: Metall and Mat Trans A

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Abbravation: Metallurgical and Materials Transactions A

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Springer US

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DOI

10.1016/0145-305x(89)90176-6

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1543-1940

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Effect of Treatment Area on Residual Stress and Fa

Authors: M Burak Toparli Niall Smyth Michael E Fitzpatrick
Publish Date: 2017/01/18
Volume: 48, Issue: 4, Pages: 1519-1523
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Abstract

Two 20mmthick aluminum sheets were laser peened and the resulting residual stresses were measured using incremental hole drilling surface Xray diffraction and synchrotron Xray diffraction techniques Laser peening was applied to two samples using the same laser peening parameters but one of the samples has a larger peened area The aim of this research was to discover the effect of peen area on residual stress for application in aerospace structures for fatigue life enhancement It was found that a larger peened area has higher and deeper compressive stresses in the crackopening direction leading to greater enhancement of fatigue lifeThe authors would like to thank to Dr Domenico Furfari of Airbus Deutschland and Metal Improvement Company UK for the samples and laser peening Professor Christoph Genzel and Dr Manuela Klaus are acknowledged for their help with the experiments at the EDDI beamline at BESSYII in Germany MEF is grateful for funding from the Lloyd’s Register Foundation a charitable foundation helping to protect life and property by supporting engineeringrelated education public engagement and the application of research

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  11. Computer-Aided Development and Simulation Tools for Shape-Memory Actuators
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