JP6671565B2 - 超音波探傷装置 - Google Patents
超音波探傷装置 Download PDFInfo
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Description
実施の形態1.
図1は、本実施の形態による超音波探傷装置の構成図である。
図示の超音波探傷装置は、超音波探触子1と送受信器2を備えている。超音波探触子1は斜角探触子であり、与えられる送信信号によって駆動される超音波を、試験体である鋼板100中に送信し、かつ、鋼板100中を伝搬した超音波のエコーを受信し、これを受信信号として出力する機能を有している。超音波探触子1の詳細を図2に示す。図2に示すように、超音波探触子1は、くさび1aと振動子1bを備えている。振動子1bは複数の振動素子をアレイ化して構成されている。
となる。ここではシミュレーションの都合上、A0S0モードを伝搬させるための入射角として、34.5°とした。一方、位相速度4000m/sのS1モードを発生させるための入射角は、
となる。ここではシミュレーションの都合上、S1モードを伝搬させるための入射角として、24.6°とした。
まず、A0S0モードが伝搬する入射角となるように、送信信号処理部3aから送信部4に対して、アレイ化した振動子1bの振動素子毎に応じた遅延信号を送る(ステップST11)。送信部4では、送信信号処理部3aからの遅延信号により励振信号を発生させ、超音波探触子1内にあるアレイ化した振動子1bの各振動素子を励振する。図2の例では、アレイ化した振動子1bの左端素子へ与える遅延時間が長く、右端素子へ与える遅延時間が短い場合の、くさび1a内の超音波伝搬状況を示している。なお、A0S0モードが伝搬する入射角は、鋼板100の厚さ、くさび1aの音速及び周波数により変化するので、シミュレーションで示した角度(34.5°)とは限らない。
・E1<E2 きず101は鋼板100の表側にある(ステップST25)
・E1>E2 きず101は鋼板100の裏側にある(ステップST26)
という関係が明らかである。受信信号処理部3bは、この判別結果を表示器307に表示する。
このように、二つのモードの板波を用いることにより、きず101が鋼板100の表側にあるのか、裏側にあるのかを判別することが可能である。
Claims (3)
- 与えられる送信信号に対応した超音波を生成して当該超音波を試験体中に送出すると共に、前記試験体中を伝搬した前記超音波のエコーを受信し、当該受信したエコーを受信信号として出力する超音波探触子と、
前記超音波探触子が前記試験体に対して複数の角度で斜め方向に超音波を送出する信号を前記送信信号として生成する送信信号処理部と、
前記受信信号から、前記複数の角度に応じたエコーの振幅と前記超音波の送出から当該エコーの受信までの時間を受信時間として求め、これらの振幅比と受信時間から、前記試験体中における音響的不連続部の位置を特定する受信信号処理部とを備えたことを特徴とする超音波探傷装置。 - 前記超音波探触子の振動子をアレイ化した複数の振動素子で形成すると共に、
前記送信信号処理部は、前記複数の振動素子に対応した異なる遅延時間を有する信号を前記複数の角度に対応した信号として生成することを特徴とする請求項1記載の超音波探傷装置。 - 前記超音波探触子は、機械的に走査することで前記試験体に対して複数の角度で斜め方向に超音波を送出することを特徴とする請求項1記載の超音波探傷装置。
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PCT/JP2017/044038 WO2019111381A1 (ja) | 2017-12-07 | 2017-12-07 | 超音波探傷装置 |
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JP6671565B2 true JP6671565B2 (ja) | 2020-03-25 |
JPWO2019111381A1 JPWO2019111381A1 (ja) | 2020-04-02 |
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US (1) | US11307174B2 (ja) |
EP (1) | EP3722801A4 (ja) |
JP (1) | JP6671565B2 (ja) |
WO (1) | WO2019111381A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7236893B2 (ja) * | 2019-03-20 | 2023-03-10 | 三菱電機株式会社 | 液体検知方法および液体検知装置 |
US11143625B2 (en) * | 2019-11-14 | 2021-10-12 | The Boeing Company | Ultrasonic inspection of parts |
US11578971B2 (en) | 2021-02-12 | 2023-02-14 | Holloway Ndt & Engineering Inc. | Ultrasonic testing using a phased array |
Family Cites Families (17)
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US4294118A (en) * | 1979-10-29 | 1981-10-13 | Sumitomo Kinzoku Kogyo Kabushiki Kaisha | Fully automatic ultrasonic flaw detection apparatus |
US4570487A (en) * | 1980-04-21 | 1986-02-18 | Southwest Research Institute | Multibeam satellite-pulse observation technique for characterizing cracks in bimetallic coarse-grained component |
US4435984A (en) * | 1980-04-21 | 1984-03-13 | Southwest Research Institute | Ultrasonic multiple-beam technique for detecting cracks in bimetallic or coarse-grained materials |
US4497210A (en) | 1982-07-05 | 1985-02-05 | Tokyo Shibaura Denki Kabushiki Kaisha | Phased array ultrasonic testing apparatus and testing method therefor |
JPS62261955A (ja) * | 1986-05-09 | 1987-11-14 | Toshiba Corp | 超音波探傷装置 |
DE3715914A1 (de) * | 1987-05-13 | 1988-12-01 | Fraunhofer Ges Forschung | Verfahren und vorrichtung zum nachweis von rissen mit hilfe von ultraschall |
WO1991002971A1 (en) * | 1989-08-21 | 1991-03-07 | Hitachi Construction Machinery Co., Ltd. | Ultrasonic flaw detector |
DE9214948U1 (de) | 1992-11-03 | 1994-03-10 | Siemens AG, 80333 München | Ultraschallwandler-Anordnung |
JPH06331603A (ja) | 1993-05-18 | 1994-12-02 | Nippon Steel Corp | 鋼板表面疵探傷方法 |
EP0829714A4 (en) * | 1996-03-28 | 2007-06-27 | Mitsubishi Electric Corp | ULTRASONIC SOUND DETECTOR AND ULTRASONIC PROCEDURE FOR DETECTING ERRORS |
DE19627957A1 (de) * | 1996-07-11 | 1998-01-15 | Bbc Reaktor Gmbh | Ultraschallwinkelprüfkopf und Verfahren zum Betreiben des Winkelprüfkopfes |
US5814731A (en) * | 1997-01-28 | 1998-09-29 | Alexander; Alton Michel | Ultrasonic scanning apparatus for nondestructive site characterization of structures using a planar based acoustic transmitter and receiver in a rolling pond |
JP4552309B2 (ja) * | 2000-11-02 | 2010-09-29 | 株式会社Ihi | 超音波探傷方法及び装置 |
US7093490B2 (en) * | 2004-02-23 | 2006-08-22 | Hitachi, Ltd. | Ultrasonic flaw detecting method and ultrasonic flaw detector |
JP5800667B2 (ja) * | 2011-10-17 | 2015-10-28 | 日立Geニュークリア・エナジー株式会社 | 超音波検査方法,超音波探傷方法及び超音波検査装置 |
JP2013156166A (ja) * | 2012-01-30 | 2013-08-15 | Mitsubishi Heavy Ind Ltd | 超音波探傷方法 |
JP2013242202A (ja) * | 2012-05-18 | 2013-12-05 | Hitachi-Ge Nuclear Energy Ltd | 超音波検査方法及び超音波検査装置 |
-
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- 2017-12-07 JP JP2019557948A patent/JP6671565B2/ja active Active
- 2017-12-07 EP EP17933982.5A patent/EP3722801A4/en active Pending
- 2017-12-07 US US16/757,685 patent/US11307174B2/en active Active
- 2017-12-07 WO PCT/JP2017/044038 patent/WO2019111381A1/ja unknown
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EP3722801A1 (en) | 2020-10-14 |
US20200249205A1 (en) | 2020-08-06 |
EP3722801A4 (en) | 2020-11-25 |
WO2019111381A1 (ja) | 2019-06-13 |
US11307174B2 (en) | 2022-04-19 |
JPWO2019111381A1 (ja) | 2020-04-02 |
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