Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2006-09-29
2010-06-15
King, Roy (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C219S121850, C148S421000, C148S426000
Reexamination Certificate
active
07736450
ABSTRACT:
A method for laser shock peening an article, such as a gas turbine engine airfoil, with varying thickness by varying a surface fluence of a laser beam over a laser shock peening surface as a function of the thickness beneath a laser shock peened spot formed by the beam on the surface. The fluence may be equal to the thickness multiplied by a volumetric fluence factor, the volumetric fluence factor being held constant over the laser shock peening surface. The volumetric fluence factor may be in a range of about 1200 J/cm3to 1800 J/cm3and more particularly about 1500 J/cm3. The method may include varying energy in the laser beam using a computer program controlling firing of the laser beam. A device such as an optical attenuator external to a laser performing firing may be used to vary the energy.
REFERENCES:
patent: 3525575 (1970-08-01), Robert et al.
patent: 3850698 (1974-11-01), Mallozzi et al.
patent: 4401477 (1983-08-01), Clauer et al.
patent: 4937421 (1990-06-01), Ortiz, Jr. et al.
patent: 5131957 (1992-07-01), Epstein et al.
patent: 5492447 (1996-02-01), Mannava et al.
patent: 5531570 (1996-07-01), Mannava et al.
patent: 5591009 (1997-01-01), Mannava et al.
patent: 5674328 (1997-10-01), Mannava et al.
patent: 5674329 (1997-10-01), Mannava et al.
patent: 5756965 (1998-05-01), Mannava
patent: 5911891 (1999-06-01), Dulaney et al.
patent: 5932120 (1999-08-01), Mannava et al.
patent: 6454535 (2002-09-01), Goshorn et al.
patent: 6559415 (2003-05-01), Mannava et al.
patent: 6570125 (2003-05-01), Suh et al.
patent: 6570126 (2003-05-01), Suh et al.
patent: 6657160 (2003-12-01), Hackel et al.
patent: 6875953 (2005-04-01), Clauer et al.
patent: 7286580 (2007-10-01), Dane et al.
patent: 0924306 (1999-06-01), None
patent: 0933438 (1999-08-01), None
patent: 1288317 (2003-03-01), None
patent: 1473373 (2004-11-01), None
patent: 1577403 (2005-09-01), None
A.H. Clauer, Laser shock peening for fatigue resistance. In: J.K. Gregory, H.J. Rack and D. Eylon, Editors, Surface performance of titanium, TMS, Warrendale (PA) (1996), pp. 217-230.
“Distributed Intelligence Drives High-Energy Laser Manufacturing”, Photonics Tech Briefs, Jul. 2006, www.ptbmagazine.com, 2 pages.
EP07117100 European Search Report with Annex, Oct. 12, 2009, 6 pages.
Bailey Mark Samuel
Hausfeld Michael Paul
Rockstroh Todd Jay
Williams, Jr. Donald Eugene
Andes William Scott
General Electric Company
King Roy
Roe Jessee R.
Rosen Steven J.
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