Abstract: A system for producing at least one trench to improve film cooling in a sample is provided. The system includes at least one laser source outputting at least one pulsed laser beam. The pulsed laser beam includes a pulse duration including a range less than about 50 ?s, an energy per pulse having a range less than about 0.1 Joule, and a repetition rate with a range greater than about 1000 Hz. The system also includes a control subsystem coupled to the laser source, the control subsystem configured to synchronize a position of the sample with the pulse duration and energy level in order to selectively remove at least one of a thermal barrier coating, a bondcoat and a substrate metal in the sample to form the at least one trench.
Type:
Grant
Filed:
May 5, 2009
Date of Patent:
November 27, 2012
Assignee:
General Electric Company
Inventors:
Ronald Scott Bunker, Wenwu Zhang, Wilbur Douglas Scheidt, Magdi Naim Azer, Marshall Gordon Jones, Ching-Pang Lee