Design Criteria for Wear Testing Machines. 1. Physical Mechanics: Design Criteria for Existing Wear Testing Machines. 2. Applied Mechanics: Application of Design Criteria to Existing Wear Testing Machines

摘要

The geometry of friction and wear testing machines is analyzed and six criteria which must be met in the design of such machines are listed and applied to existing wear testing machines. These are the Shell 4-ball, the Bartel I.F.E., the Timkken, the disk, and the pin-and-disk machines. Critical evaluation of the machines shows that, for determining the lubricating capacity of oils and to develop the anti-wear and or anti-seizing action of certain additives, all perform perfectly. For in-depth study of the contact phenomena, however, only the pin-and-disk and the disk machines are preferred.