Wenderoth, Lind & Ponack
Flow detection apparatus employing tire probes having ultrasonic oscilators mounted therein
 An apparatus for detecting flaws using supersonic waves measures a thickness of a test object or a position of a cavity inside the test object by employing pair of ultrasonic probes. By changing a relative position of one ultrasonic probe to that of the other ultrasonic probe, a plurality of waveform data of ultrasonic reception signals is acquired. Each acquired waveform data is added per corresponding unit of time. Since a surface wave component of each waveform data has a shifted phase due to the difference in arrival time, a level of the surface wave component is offset and thus minimized through addition of the waveform data. 
Tokimec Inc.
G G G G G G G
G01N G01N G01N G01N G01N G01N G01N
additional inventional additional inventional additional additional additional
Kinuko Ryo Ryohei Shinichi Yutaka
Kato Ishiyama Motegi Takeuchi Kashiwase