초록 ▼

In the present invention, a discrete region of the TBC is heated, as by applying a controlled quantity of laser energy onto the region for a time interval. Then, the radiant thermal energy of a region outside the laser strike region is measured at a predetermined time following the termination of th

In the present invention, a discrete region of the TBC is heated, as by applying a controlled quantity of laser energy onto the region for a time interval. Then, the radiant thermal energy of a region outside the laser strike region is measured at a predetermined time following the termination of the laser pulse. The intensity of this measured radiant energy is then compared with the radiant intensities which have been experimentally obtained from known thickness specimens and the thickness is inferred therefrom.

대표청구항 ▼

A method of ascertaining the equivalent thermal barrier thickness of a coating comprising the steps of: using a laser beam, heating a first area on the coating having an unknown thermal barrier equivalent thickness; measuring the relative temperature distribution over a second area on the coating; c

A method of ascertaining the equivalent thermal barrier thickness of a coating comprising the steps of: using a laser beam, heating a first area on the coating having an unknown thermal barrier equivalent thickness; measuring the relative temperature distribution over a second area on the coating; comparing the measured temperature distribution with a collection of reference temperature distributions each representing a reference equivalent thermal barrier thickness; and selecting from the reference collection a reference temperature distribution representing the equivalent thermal barrier thickness of the coating.