Abstract
Since 3D micro-topography of the Micro Wire Electrical Discharge Machining (MWEDM) surface is an isotropy surface which is composed of innumerable ellipsoid profile peaks and pits, shape and distributing characters of surface structure can bring direct influence on characterization precision or calculating method of 3D roughness parameters, which needs considering surface measure direction or is influenced by surface structure. Through researching structural characters of 3D micro-topography of MWEDM surface, this article improves arithmetic method of space parameters of 3D roughness influenced by structure, which predigests calculating process and advances calculating precision.
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