| 摘要 |
[Task] It is to provide a technique for measuring dynamic panel stiffness in a higher accuracy. [Solution for task] A method for measuring dynamic panel stiffness of an outer panel for automobile parts by pushing an indenter onto a surface of an outer panel to be measured in a given pushing direction intersecting to the surface under a given load to deform the outer panel and measuring a deformation state of the outer panel, characterized in that grids arranged in a regular lattice form are transferred to a surface of a measuring site of the outer panel to be measured; fiducial markers previously knowing three-dimensional position information are arranged on the periphery of the measuring site of the outer panel; the indenter is pushed onto the surface of the measuring site of the outer panel under the load and moved in a direction perpendicular to the pushing direction, during which the grids on the surface of the outer panel deformed by loading of the indenter are simultaneously and repeatedly shot from plural positions by means of plural cameras; three-dimensional position information of the grids is calculated corresponding to the fiducial markers based on the shot image data to measure a change in the deformation state of the outer panel associated with the movement of the indenter, which is output as panel deformation data. |
