Measuring heat shield tiles NPL's freeform service measures turbine engine heat shield tiles for thermal coating analysis. 3D scan comparison of tiles with standard and trial coating Background As part of a case study for the Supergen project, the performance of a thermal barrier coating system in laboratory furnace tests was compared with the performance of the same coating system on real components in an industrial gas turbine. The in-service tests were performed courtesy of RWE npower who allowed heat shield tiles coated with the trial coating system to be placed inside a gas turbine engine. The coating system failed more rapidly in the gas turbine environment (within six months) than in the laboratory test furnaces, and one of the aims of the work was to find out why. The ex-service ti

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