Measurement default diagnostics of a roughness meter with TS100 head using a rectified specimen and solved by fuzzy logic estimator

The purpose of this study is to diagnose defaults of the TR200-roughness meter by contact measurement using the same path with two opposite directions of the probe left and right. We conducted a series of tests on the same rectified part with a roughness of 0.553 μm using a roughness meter equipped with a TS100 standard probe at a probing path of 8.5 mm, a drive speed of 0.5 mm/s and a feedback speed of 1 mm/s. The originality of this present work focuses on the measurement default diagnosis of the roughness of the surface from the change in direction of the probe after each measure in the same trajectory. This approach validates the unreliability of a roughness meter in the case of parts machined by cutting processes (turning, milling, and grinding). These tests have enabled us to limit the control of the surface state by a TS100 standard probe. For each test, a disagreement was found between the right and left directions by making the calculation of roughness parameters. Estimator fuzzy logic was implemented to solve this problem, obtaining satisfactory results with minus proportional errors between the actual displacement curve and the curve displacement obtained by this system.