Abstract
ABSTRACTThis article investigates the tribological behavior of carbon fiber–reinforced polymer (CFRP) against Ti6Al4V alloy for fretting contacts. Tests were conducted for CFRP against Ti6Al4V in a ball-on-flat configuration. The fretting coefficient of friction (COF) was measured and worn surfaces were characterized. Three-dimensional topographies and surface roughness of fretting scars with different fretting amplitudes were examined. The relationships between COF and various fretting amplitudes, normal force, frequency, fibers orientation, and temperature are presented. The results shows that these factors influence the fretting friction coefficient as follows: fretting amplitude applied load fiber orientation frequency, and temperature and fretting mode have a combined action on the evolution of COF. The surface properties of fretting scars under various fretting amplitudes were demonstrated. In addition, fibrous polishing and shear fracture and fatigue cracking of the matrix are the main fretting wear mechanisms under low fretting amplitude.
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