Other

Kawasaki Jukogyo Kabushiki Kaisha

Chubu Electric Power Company, Inc.

Kouji Michiba

Hiroshi Iwahashi

Kazuhiro Ogawa

Hiroyuki Hirata

Shigetomo Matsui

Shinji Koga

Shuji Yamamoto

Kouyu Itoga

Takaaki Okumura

Katsuhiro Onda

Masahiro Uenishi

Tetsuzo Harada

Hidefumi Yamanaka

Taketo Yamakawa

Toshinobu Nishibata

Naoshige Kubo

Kazutoshi Nishimoto

Kouji Sugimoto

Yutaka Chida

Sadao Iuchi

Welded structure made of low thermal expansion coefficient alloy and welding material therefore

A radiographic test is conducted on a welded portion of a pipe or the like to form a radiographic image, which is introduced into a computer. Volumetric defects and planar defects in the radiographic image are emphasized and extracted by separate methods to obtain a volumetric candidate defect image and a planar candidate defect image. The candidate defect images are then combined to form a single image in which defects can be easily identified. Features of defects in the images are measured, and a set of interference rules is applied to the measured features. Each inference rule gives a degree of certainty that a defect is of a certain type. The degrees of certainty determined by a plurality of the rules are collated to obtain a total degree of certainty, and the type of a defect is inferred from the total degree of certainty.

Method of processing radiographic image data for detecting a welding

Growing community of inventors

Kobe, Japan

Kouji Michiba