?超音波探傷試験における簡便な傷サイジング手法の提案
英字タイトル:
Proposal of Concise Crack Sizing Approach in Ultrasonics
著者:
福冨 広幸 Hiroyuki FUKUTOMI 林 山 Shan LIN 緒方 隆志 Takashi OGATA
発刊日:
公開日:
Crack SizingdenkenfukutomicriepijpNondestructive InspectionorStainless Steel Weldments E-mailTip EchoesUltrasonics
Proposal of Concise Crack Sizing Approach in Ultrasonics
著者:
福冨 広幸 Hiroyuki FUKUTOMI 林 山 Shan LIN 緒方 隆志 Takashi OGATA
発刊日:
公開日:
カテゴリ: 第2回
キーワードタグ:Crack SizingdenkenfukutomicriepijpNondestructive InspectionorStainless Steel Weldments E-mailTip EchoesUltrasonics
概要
Abstract This paper describes a new crack tip diffraction approach using a set of angle beam and direct contact transducers. In this approach, a crack height is calculated from a time di fference from two echoes of a tip-diffracted longitudinal wave, which arise after an incident wave from the angle beam transducer impinges the crack. The two echoes are detected by the d irect contact transducer which lies on the opposite surface of and over the crack. One echo is related to the wave traveling directly from the tip, and the other is the wave after back w all reflection. The new approach has been demonstrated by applying to height measurements of crack-like slits which are machined in welded specimens made from austenitic stainless steel.
