Non-Contact Geometry Inspection of Workpieces with Optically Non-Cooperative Surfaces
In order to produce optically cooperative surfaces to use triangulation measuring systems, the methods of surface and thin-coating technology are resorted to. Among these number physical methods such as PVD technology, (electro-)chemical treatment as, for example, electrochemical etching and electroless coatings as well as mechanical treatments of the components by means of glass-bead and corundum blasting. The processes mentioned are suitable for producing optically cooperative surfaces since, owing to the corresponding test parameters, a change of the component's surface occurs at the sub-micrometer scale. Currently, no indication in the literature is provided that such processes are employed for manufacturing optically cooperative surfaces vis-à-vis triangulation methods.
M. Merklein, F.-W. Bach, K.-D. Bouzakis, B. Denkena, M. Geiger and H.-K. Toenshoff
F. W. Bach et al., "Non-Contact Geometry Inspection of Workpieces with Optically Non-Cooperative Surfaces", Key Engineering Materials, Vol. 438, pp. 123-129, 2010