The Height Amplitudes of Surface Roughness Based on Area-Direction Character and Relative Assessed Indexes

摘要: To study the relationship among height amplitude of surface roughness , assessed area and direction, amplitudes SRa, SRq, SRsk SRku based on area-direction character are defined in paper. And foundation these parameters, relative indexes, direction indexes total established. natural extension 2D Ra, Rq, Rsk Rku. They different from 3D Sa, Sq, Ssk Sku. provide an evidence to quantitative roughness, direction. Relative can be used assess distribution situation related area, entireness.