| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for measuring a flaw in an object surface, measuring a flaw in an object surface with high accuracy, even when the flaw is measured over a length exceeding the range of a single measurement, in such a case that an obstacle exists on the surface, when a wear, deflection, etc., exist on the object surface.SOLUTION: A member 2 is provided between both ends of the object 3, and is deformed by pressing a horizontal plate 6 against it and cured; the horizontal plate is removed, and a reference line connecting the both ends of the object and the member surface is set; a measuring instrument is installed; the distance to the object surface is measured while moving the measuring instrument along the reference line, to acquire first measurement data representing flaw distribution; the measuring instrument is installed in the next measurement range; the distance to the object surface is measured while moving the measuring instrument, to acquire second measurement data; and data composed of the first measurement data and the second measurement data is acquired. |
