3D AMPLITUDE PARAMETERS FOR THE WEAR SCARS RESULTED AFTER TESTING ADDITIVATED RAPESEED OILS ON FOUR-BALL TESTER - IONESCU, Traian Florian; CRISTEA, George Cătălin; GEORGESCU, Constantin; OJOC, George Ghiocel; CHIPER TITIRE, Larisa; SUCIU, Cornel; DELEANU, Lorena (Mechanical Testing and Diagnosis, 2022)