Other

Toyokazu Maeda

Yoshiyuki Fujita

Hideto Fujita

Osamu Kudo

A hardness tester for a large test material is downsized by shortening a stroke length of the x-y stage. A hardness tester in accordance with the invention transfers the laser irradiating unit,two-dimensionally along the X or Y axis and irradiate a laser beam on the material W under test placed on the stage,The tester also monitors the laser beam visually and determine a target position to be measured and transfers the monitoring unit,to the determined target position along the X or Y axis and monitor the position by means of the monitoring unit,If the position does not fall on a boundary between crystals, the loading unit,is two-dimensionally transferred and forms a dent on the position by means of the penetrator,An image of the dent is captured by the monitoring unit,and the hardness is determined by calculating a diagonal length of the dent by image processing.

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Kyoto, Japan

Toyokazu Maeda