Laser peening is a technology employed to induce deep levels of plasticity in materials resulting in compressive residual stress to depths of 5mm (0.2 inches) or deeper enabling increased fatigue strength and lifetimes and greatly enhanced resistance to stress corrosion cracking. An advanced in Nd:glass laser technology has enabled high rate, cost effective industrial deployment of the technology that is now being widely used in aerospace and electric power generation applications. Examples of deep levels of compressive stress and resulting improvements in fatigue life and resistance to stress corrosion cracking will be shown. An advanced beam delivery technology incorporating a robotic arm coupled with a video detection/beam alignment system is enabling rapid setup and application in field applications. The technology has been approved and deployed to prevent early fatigue cracking of key structural components on the F-22 fighter jet. It is also being applied to oil and natural gas applications and has the potential to serve a broad base of field applications including oil and gas lines, on-board ship SCC, nuclear power plant SCC, and fatigue and corrosion applications in upstream exploration and downstream oil refining.
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ASME 2011 Pressure Vessels and Piping Conference
July 17–21, 2011
Baltimore, Maryland, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4457-1
PROCEEDINGS PAPER
Fatigue and SCC Lifetime Enhancement of Steels by Means of Laser Peening
Lloyd A. Hackel,
Lloyd A. Hackel
Metal Improvement Company, Livermore, CA
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C. Brent Dane,
C. Brent Dane
Metal Improvement Company, Livermore, CA
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Jon Rankin,
Jon Rankin
Metal Improvement Company, Livermore, CA
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Fritz Harris,
Fritz Harris
Metal Improvement Company, Livermore, CA
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Chanh Truong,
Chanh Truong
Metal Improvement Company, Livermore, CA
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Serena Marley
Serena Marley
Metal Improvement Company, Livermore, CA
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Lloyd A. Hackel
Metal Improvement Company, Livermore, CA
C. Brent Dane
Metal Improvement Company, Livermore, CA
Jon Rankin
Metal Improvement Company, Livermore, CA
Fritz Harris
Metal Improvement Company, Livermore, CA
Chanh Truong
Metal Improvement Company, Livermore, CA
Serena Marley
Metal Improvement Company, Livermore, CA
Paper No:
PVP2011-58037, pp. 73-84; 12 pages
Published Online:
May 21, 2012
Citation
Hackel, LA, Dane, CB, Rankin, J, Harris, F, Truong, C, & Marley, S. "Fatigue and SCC Lifetime Enhancement of Steels by Means of Laser Peening." Proceedings of the ASME 2011 Pressure Vessels and Piping Conference. Volume 7: Operations, Applications, and Components. Baltimore, Maryland, USA. July 17–21, 2011. pp. 73-84. ASME. https://doi.org/10.1115/PVP2011-58037
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