Wear Measurements by Physical, Chemical, or Radioactivity Methods

THE measurement of piston-ring wear by use of radioactivated rings has attracted considerable interest within the past few years, largely because the method is extremely sensitive.

In this paper the author compares the irradiated system of wear measurement with that of chemical analysis for iron, and in turn compares both with direct physical methods of measuring, citing the fact that the latter is the fundamental basis for radioactive and iron analyses.