Roughness Ra | Arithmetic Average of Roughness Profile

The roughness Ra is, in mechanics, an average characterizing the surface condition of a part or material. In industry, roughness control is part of the dimension validation process and ensures part conformity during machining. There are other indicators that characterize the roughness of a surface, but in this article we will focus on the general surface condition of the control area. What is the roughness Ra? Definition The [...]