Infrared-based method and apparatus for online detection of...

Radiant energy – Infrared-to-visible imaging – Including detector array

Reexamination Certificate

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C250S339020, C250S339140, C250S342000, C382S152000

Reexamination Certificate

active

07432505

ABSTRACT:
An online method, system, and computer-readable code for remotely monitoring radiant energy emitted from a turbine blade (106), which may be undergoing an incipient degradation, such as a crack, in a relatively low-temperature, and saturated steam environment of the low pressure stage of a steam turbine. The method and system provide sufficient temporal and spatial resolution to obtain high quality infrared images of the blade areas of interest enabling the system to identify the crack at any of those areas of the blade prior to such a crack growing to a critical length.

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