Invention Grant
- Patent Title: System and method for performing laser induced breakdown spectroscopy during laser ablation coating removal
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Application No.: US15055291Application Date: 2016-02-26
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Publication No.: US10232473B2Publication Date: 2019-03-19
- Inventor: Ying Zhou , Hongqiang Chen , Matthew Vaughan Schulmerich , Jason Christopher Gritti
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: GE Global Patent Operation
- Agent Nitin N. Joshi
- Main IPC: C23F4/00
- IPC: C23F4/00 ; B23P6/00 ; B23K26/36 ; F01D5/00 ; G01N21/71 ; G01N21/84

Abstract:
A system and method for performing laser induced breakdown spectroscopy during laser ablation of a coating, such as a TBC coating, deposited on a surface of a component, particularly to enable obtained spectrometry signals of the ablated coating to be used to monitor and control the laser ablation removal process in real-time. The system includes a laser energy source and a scan head interconnected with the laser energy source to receive a laser beam therefrom and then direct the laser beam onto the surface of the coated component. Collection optics collect radiation emitted from a laser-induced plasma generated by the laser beam at the surface of the coated component. The system is further equipped to spectrally analyze the radiation and generate a feedback signal for control and optimization of one or more operational parameters of the laser energy source in real-time.
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