Method for testing a blade root coating.

For this method of testing a coating (36) to the blade root there is provided a so-called cylinder blade (32) having at least one bearing surface (34) coated with said coating, and another disc of said specimen (22) having at least one bearing; the blade cylinder is subjected (32) engaged with the disc test piece (22) to tensile cycles during which a test piece is subjected to tensile stress with respect to each other, the tensile force is transmitted via the brought into contact with the blade and test the specimen disque.Ce method reproduces very faithfully the behavior and aging of the coating and allows a fair assessment of the quality of coatings.