| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and method for simply measuring a shape and dimension of a measuring object having a periodic structure such as a deformed steel bar.SOLUTION: The shape measuring apparatus measures a surface shape of a measuring object in which knots are longitudinally and periodically formed, by a light-section method, where the measuring object moves longitudinally at a prescribed speed, and irradiates a light sectioning line in a direction crossing with the moving direction of the measuring object. When v is the moving speed of the measuring object, L is an interval between the knots, w is a longitudinal length of the knots and n and m are positive integers, the irradiated measuring object is photographed at a frame rate f represented by the following expression: f=v/nL±(1/m)*(w/v). |
