Hardness tester and program

Patent metadata

Field	Value
Publication number	US-9063048-B2
Application number	US-201213547687-A
Country	US
Kind code	B2
Filing date	Jul 12, 2012
Priority date	Jul 12, 2012
Publication date	Jun 23, 2015
Grant date	Jun 23, 2015

Abstract

A hardness tester having an image capturer capturing an indentation image, a data memory, an automatic size-scanning program scanning an indentation size, and a hardness calculation program includes: an identification information providing program providing image data with test specimen identification information and indentation identification information; a memory control program having the image data associated with the identification information stored; a specifying program specifying, when a scanning error occurs, identification information of image data in which the scanning error has occurred; an obtaining program obtaining the image data from the data memory based on the specified identification information; and a re-scanner (a display, an operator, and a manual size-calculation program) re-scanning an indentation size from the obtained image data.

First claim

What is claimed is:

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.

2. The hardness tester according to claim 1 , wherein the re-scanner comprises:
a display configured to display an image based on the image data obtained by the obtainer;
a display specifier with which a user specifies points in the image displayed by the display; and
a size calculator identifying coordinates of points specified by the display specifier and calculating an indentation size based on the identified coordinates.

3. At least one non-transitory computer readable medium that stores a set of executable instructions which, when executed by a processor, causes a computer to act as:
an identification information provider configured to provide an image data with test specimen identification information that identifies each test specimen and indentation identification information that identifies each indentation on the test specimen, the image data being obtained from an image of an indentation 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 controller configured to control a memory to store the image data, and the test specimen identification information and the indentation identification information in association with the image data;
an automatic size scanner configured to scan an indentation size from the image data of the indentation image 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;
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 size calculator configured to identify, in a case where a user specifies points on an image based on the image data obtained by the obtainer, coordinates of the identified points and calculating an indentation size from the specified coordinates.

Assignees

• Koshimizu Fumihiko
• Mitutoyo Corp

Inventors

• Koshimizu Fumihiko

Classifications

• G01N3/42 Primary

  by performing impressions under a steady load by indentors, e.g. sphere, pyramid (G01N3/54 takes precedence) · CPC title

• G01N2203/0208

  Specific programs of loading, e.g. incremental loading or pre-loading · CPC title

• G01N2203/0647

  Image analysis · CPC title