Artificial Running-in of Piston Rings Open PDF Document Details Document Type Technical Report Publication Date Mar 01, 1944 Accession Number ADA800957 Entities People A. R. Bobrowsky E. S. Machlin Organizations Glenn Research Center Tags Communities of Interest Air Platforms DTIC Thesaurus Topics Chemistry Corrosion Resistance Diffraction Electron Diffraction Engines Films Finishes Friction Journal Bearings Lubricants Lubrication Materials Piston Rings Pistons Resistance Surface Roughness Wear Resistance