FUNDAMENTALS -- TERMINOLOGY AND CLASSIFICATIONS -- Wear, Friction, and Lubrication -- Wear Classifications -- WEAR MEASURES -- WEAR MECHANISMS -- Overview -- Adhesive Mechanisms -- Single-Cycle Deformation Mechanisms -- Repeated-Cycle Deformation Mechanisms -- Oxidative Wear Processes -- Thermal Wear Processes -- Tribofilm Wear Processes -- Abrasive Wear -- Wear Maps -- WEAR BEHAVIOR AND PHENOMENA -- General Behavior -- Mechanism Trends -- Tribosurfaces -- Wear Transitions -- Galling -- Fretting -- Macro, Micro, and Nano Tribology -- FRICTION -- LUBRICATION -- TESTING -- SELECTION AND USE OF WEAR TESTS -- TESTING METHODOLOGY -- General -- Simulation -- Control -- Acceleration -- Data Acquisition, Analysis, and Reporting -- Friction Measurements in Wear Testing -- Tribological Aspect Number -- WEAR TESTS -- Overview -- Phenomenological Wear Tests -- Operational Wear Tests -- FRICTION TESTS -- GLOSSARY OF WEAR MECHANISMS, RELATED TERMS, AND PHENOMENA -- APPENDIX: GALLING THRESHOLD STRESS -- INDEX.