Surface roughness is very important phenomenon in industry and manufacturing. Produced products must have roughness standards that defined before in technical drawings or technical office. So there must be some kind of process in quality control departments called as surface roughness measurement. In this article we will explain shorty the surface roughness measurement techniques.
The most basic application to asses the surface rougness subjectively is the use of ‘Standard Test Surfaces’. The user asses the surface by touching on it which is also called as ‘fingernail’ method, and compare this surface with the standard surfaces. This method is very subjective and not recomended to use for professional manner.
There is an other electronic technique to asses the surface roughness situation is done by electronic stylus devices. There is a strandard shaped stylus that traverse along the workpiece, and sends the electronical signals that gives the topography of the surface which can be shown as actual or average surface roughness values bu profilometer device. Profiling devices has an separate flat nominal surfaced plate that compares the data that came from stylus to asses the surface contour.
The most advanced technology to measure the surface roughness is the optical technologies. The most accurate surface topology information can be obtained from these devices. In general, the reflectance, diffusivity and light scattering informations of measured surfaces are used to asses the surface situation. And there is no direct contact with the workpiece which is a very important feature of these devices. Speed of measurement with these devices is also superior compared with other surface roughness measurement techniques.
The general methods to measure the surface roughnesses of workpieces or produced parts can be explained shortly like that. Leave your comments and questions about ‘surface roughness measurement techniques’ below!