Ngk Insulators, Inc.

Ayumi Watanabe

Akihiro Mizutani

A method for inspecting an end face, comprising: an arrangement step of arranging a honeycomb structure having a partition wall extending from a first end face to a second end face, at a predetermined position using the second end face as a placement face; a first image data for processing acquisition step of acquiring first image data for processing while irradiating the first end face with light having an angle of 40&#xb0; or more, the angle being an angle formed between the light and an axis being perpendicular to the placement face of the honeycomb structure; a second image data for processing acquisition step of acquiring second image data for processing while irradiating the first end face with light having an angle of less than 40&#xb0;; and a crack detection step of detecting a crack by comparing the first image data for processing with the second image data for processing.

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Nagoya, Japan

Ayumi Watanabe