Carbon Brush Appearance

Carbon Brush Appearance

B1-BRANCH FORMATION DUE TO EXTRANEOUS DUST
B2-REDUCED BY DUST GROOVES

B3-BREAKAGE DUE TO OSCILLATIONS

CARBON BRUSH – TOP SURFACE – WORKING IN OF THE PRESSURE PIECE
B4-SMOOTH THROUGH PURELY MECHANICAL WORKING IN


CARBON BRUSH – TOP SURFACE – WORKING IN OF THE PRESSURE PIECE
B5- BURNT DUE TO ADDITIONAL CURRENT CONDUCTION AND SPARKING

B6-MECHANICAL STEP FORMATION
B7-SIMULTANEOUS BREAKING-UP OF THE SURFACE DUE TO CURRENT FLOW

B8-SIDE VIEW OF B6 & B7 (left)


B9- PEELING-OFF IN LAYERS ON THE TRAILING SIDE
B10- SCALLOPING EFFECT ON LEADING EDGE