Tribology of protective coating in aeronautics: interface dynamics assessment by tribometer and optical profiler

Modern tribology allows for a deeper understanding on how surfaces slide together triggering an improvement in protective coating for challenging conditions such as the one met in aeronautic. Knowledge has notably progressed through the use of advanced tribometer that provides accurate control on loading force together with high sensitivity frictional reading. Advances on third body, dry lubrification or galling damages particularly benefited from force quantification. Besides tribo-test, understanding of contact surfaces dramatically improved through the use of a high-resolution optical profiler that provides accurate and highly sensitive vertical measurement down to nanometer level. Influence of initial roughness prior test as much as exact wear rate after test are among the most efficient inputs for tribologist to understand tribology system in place.

About the speakers

Dr Karl Delbé

l’Ecole Nationale d’ingénieurs de Tarbes

Karl Delbé is an Associate Professor at National School of Engineers at Tarbes where he teaches Physics. He has a Ph.D. on the understanding of intrinsic tribological properties of lamellar compounds and is a permanent researcher at Laboratoire Génie de Production with specialty on understanding tribological mechanisms in lamellar compounds, ceramics, metal-matrix composites with the use of Raman spectroscopy, optical profiler and tribometer.