test machine of a coating to the blade root.

Machine (10) for testing a coating (36) capable of assuming an equal turbomachine rotor blade. This machine comprises two half-pieces (32) each having a bearing surface (24) coated with the coating, against test piece having two bearings, a first holding device (20) to maintain against test piece (22) along an axis pulling a second retaining device (30) for holding the test piece halves (32) around the against-eprouvette.Grâce to traction means (14) maintaining systems subjected to predetermined tensile cycles following the traction axis, during which the tensile force is transmitted from a positioning system to each other via the respective bearing surfaces in contact against the test piece (22) and the half-tubes (32) .This machine provides highly reliable results about the behavior in time of the tested blade root coating.