استاندارد ASTM G181 در خصوص Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions

  استاندارد ASTM G181 باب خصوص Standard Test Method for Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions نسخه 2011 10 صفحه   Scope 1.1 This test method covers procedures for conductinglaboratory bench-scale friction tests of materials, coatings, andsurface treatments intended for use in piston rings and cylinderliners in diesel or spark-ignition engines. The goal of thisprocedure is to provide a means for preliminary, cost-effectiv ...