Patent ID: 9063048
Filing Date: 2015-06-23
Classification: G01N

Abstract:
1. A hardness tester comprising: an image capturer configured to capture an image of an indentation after the indentation is formed by an indenter loaded with a predetermined load and pressed against a surface of a test specimen mounted on a test stage; a memory configured to store image data of the indentation image captured by the image capturer; an automatic size scanner configured to scan a size of the indentation from the image data stored in the memory; a hardness calculator configured to calculate hardness of the test specimen using the indentation size scanned by the automatic size scanner; an identification information provider configured to provide the image data with test specimen identification information which identifies each test specimen and indentation identification information which identifies each indentation on the test specimen; a memory controller configured to control the memory to store the image data and the test specimen identification information and the indentation identification information in association with the image data; a specifier configured to specify, when a scanning error occurs during scanning by the automatic size scanner, test specimen identification information and indentation identification information of image data in which the scanning error has occurred; an obtainer configured to obtain image data from the memory based on the test specimen identification information and the indentation identification information specified by the specifier; and a re-scanner configured to re-scan an indentation size from the image data obtained by the obtainer.