Determining methods of the reference surface and the pile-up width of indented materials for measuring yield strength

摘要

The present invention relates to a material accumulation measuring methods for determining the surface strength measured with the reference surface of the press-in test material to , and more particularly, to a method of determining the reference surface of the press material which can accurately determine the reference surface by taking into account the surface roughness of a material that is not the press- deformation based on the 3-D image analysis technique . ; in addition, the present invention is a material of the press material required for an accurate measurement of the surface contours yield strength by performing analysis of the material accumulation (pile-up) using the reference surface area determined by a standard method for determining the surface of the press material will build on material accumulation determines the width of the press material to determine exactly how any width to the plastic zone size .