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    • Study of Wear Evolution for a Hydraulic Oil Using a Four Ball Tester 

      Spânu, Constantin; Rîpă, Minodora; Ciortan, Sorin (Universitatea ”Dunărea de Jos” din Galați, 2008)
      Time is crucial for the wear of materials. Time of an experiment must be long enough to obtain an observable wear but no so long to make the experiments expensive. For determining anti-wear properties of the hydraulic oils ...