R. Czarnek, DEVELOPMENT AND APPLICATION OF AN IMPROVED METHOD FOR EXPERIMENTAL-DETERMINATION OF RELEASE FIELDS IN CUT RAILROAD CAR WHEELS, Wear, 191(1-2), 1996, pp. 95-100
A new approach to measuring of residual stresses in railroad wheels is
being investigated. High-sensitivity moire interferometry combined wi
th Michelson interferometry provide full field information about the d
istribution of displacements around a saw cut notch on both flat surfa
ces of the rim of a wheel. The accuracy of the measurements is better
than 100 nm. Additional discrete gauges provide information about the
absolute displacements of the points on the rim with respect to the ce
nter of the wheel.