Small distortions on the surface of sheet metal stamping parts may have significant impact on the optical appearance of the final product after finish treatment. Recently, there are considerable research activities in the development of optical methods for surface distortion measurement because of the full-field and nondestructive nature of these methods. Optical methods such as Lights and Mirrors, Defracto, 3D-Digitazition for contour measurement, 3D-Digitazition for surface distortion measurement etc. are emerging as strong candidates for industrial inspections of surface distortion. Because each technique has always its unique advantages and disadvantage for different applications, the selection of one technique depends on the particular objective as well as limitations of each technique. This paper will give a through review of the above optical methods for surface distortion measurement. In particular, the recent development '3D-Digitazition for surface distortion measurement' will be discussed in details. The fundamental and methodology are demonstrated by example of surface distortion measurement on door panel of a car body.
Recent development for surface distortion measurement
Neuere Entwicklungen zur Messung von Oberflächenstörungen
2004
7 Seiten, 5 Bilder, 5 Quellen
(Nicht paginiert)
Conference paper
Storage medium
English
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