Micro-textured Engineered Surfaces Specific Challenge REDUCE ENERGY LOSSES DUE TO FRICTION AND WEAR (including losses in manufacturing processes, machines and systems) It is estimated that ~1/3 of the energy produced in the world is consumed to overcome friction* Even moderate friction reduction could result in very significant energy conservation Idea for Meeting the Challenge MANUFACTURING METHODS THAT ALLOW THE GENERATION OF “ENGINEERED SURFACES” WITH PRESCRIBED TOPOGRAPHIES AND FRICTION PROPERTIES Traditional friction reduction methods, i.e., polishing, grinding, low friction coatings, lubricants, etc. are limited in their ability to precisely control the behavior of surfaces in contact Lack of full understanding of the physics of contacting surfaces Approach DEVELOP MICRO-TEXTURING PROCESSES IN COMBINATION WITH NON-GEOMETRIC SURFACE MODIFICATION METHODS TO CONTROL FRICTION/WEAR BEHAVIOR Example: Laser texturing in combination with laser-assisted chemical modification Roll-forming with rolls with micro-features to achieve high production throughput, etc. What is the Manufacturing Challenge NEW HYBRID TEXTURING PROCESSES FUNDAMENTAL UNDERSTANDING OF ENERGY DISSIPATION IN CONTACING SURFACES THE SCIENCE OF “SURFACE ENGINEERING” * Szeri, A. Z., Ed., (1980), Tribology, Friction, Lubrication and Wear, Hemisphere Publishing Corp., McGraw Hill, New York.