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Determination of the elastic-plastic behaviour of an abradable material by simulating the HR15Y hardness test

The HR15Y hardness test, which is widely used to characterize abradable coatings, is based of the measurement of the permanent residual deformation remaining after the application of a load through a spherical indenter.

Thus it is clearly dependent on the plastic properties of the material.

Estimates of the yield stress and of the tangent modulus were deduced from the simulation of a hardness test on 2 deposits of the same material, but having different thicknesses.

This model was developed using a finite elements code.

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UNIVERSITE DE TECHNOLOGIE DE BELFORT-MONTBELIARD
Site de Sevenans
90010 BELFORT
France
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