Abstract
This paper explains the application of a new surface roughness measurement method, derived from a surface replication technique, to evaluate surface roughnesses of inaccessible surfaces of jet engine parts. A rubber silicon replicating material Repliset®-T3 (Struers GmbH Nederland, Electraweg 5, NL-3144 CB Maassluis, Netherlands) was applied to the surface of standard scales and to the scrap parts to be inspected. A surface impression was taken. The replicas were examined under a light microscope and the surface topography measured. Results obtained by the replication method were verified with surface roughness measurements made by other conventional devices. This method is practical for making reliable and rapid surface roughnesses measurements on parts with inaccessible surfaces.
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