Roughness -monitoring of Curved Metal Surface using Laser Light Scattering Masaaki ADACHI, Akihiro HAYASHI and Kozou OKITA The relationship is derived between the second moment of the power-spectrum for random surfaces of plane shape and patterns of laser light scattered from them, where the autocorrelation functions of their profiles are assumed to be expressed by the summation of the Gaussian-shape functions. This result is extended to the case of laser light scattered from rough surfaces of

more »

... rbitrary shapes. The expansion of the scattered light from a curved and rough surface is concluded to be expressed by a simple function of the second moment of powerspectrum, a radius of the laser beam and a radius of curvature of the surface. The theoretical conclusion is supported by the experiments using test samples of ground cylinders.