Comparison of methods to measure grinding temperatures

Experimental measurements of grinding temperatures are used to estimate the energy partition to the workpiece. In the present investigation, three dif ferent temperature measuring techniques are compared for estimating the ene rgy partition in grinding. Grinding temperatures were measured in the workp iece subsurface under identical surface grinding conditions using an embedd ed thermocouple and a two color infrared detector, and on the workpiece sur face using a foil/workpiece thermocouple. All three methods gave comparable temperature responses which were consistent with analytical predictions fo r the same energy partition.