Mitsubishi Denki Kabushiki Kaisha

Nippon Telegraph and Telephone Public Corporation

Yoshitaka Koide

Kishio Arita

Hiroji Tanaka

Takashi Kozakai

Haruzi Sato

Hideo Sakai

Yoshikazu Sudo

Susumu Mitani

Yoshio Habuka

In an ultrasonic inspecting apparatus, propagation time is measured between a transmitting point of an ultrasonic wave from outer circumference of a subject material and a receiving point of the ultrasonic wave at another point on the outer circumference spaced apart from the transmitting point by a predetermined angle, and a predetermined sequence of operations is performed with the measured propagation times and the known constants, thereby internal information concerning the material, including location and shape of a defect existing therein, is provided.

Ultrasonic inspecting apparatus

Growing community of inventors

Tokyo, Japan

Yoshitaka Koide