METHOD AND SYSTEM FOR MEASURING GEOMETRIC SURFACE CHARACTERISTICS OF A FLANGE SURFACE AND COMPUTER READABLE MEDIUM STORING A COMPUTER SOFTWARE FOR EXECUTING SAID METHOD

摘要

A method for measuring geometric surface characteristics of a flange surface positioned at an end of a tubular object, such as sections of a wind power generation tower. Also, a corresponding system. The method includes optically measuring, in each of a plurality of rotational positions of the tubular object, a set of measurement points at the surface of the flange, each set of measurement points being arranged in a sector along an arc at a first distance from the central axis of the tubular object, and being separated in a circumference direction of the flange, wherein said sectors are at least partly overlapping, so that at least two measurement points of each set essentially correspond to measurement points of at least one other set of measurement points, and wherein the arcs together extend over the entire circumference of the flange.