JP2012173281A - 交番磁場を利用した非破壊検査装置および非破壊検査方法 - Google Patents
交番磁場を利用した非破壊検査装置および非破壊検査方法 Download PDFInfo
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- JP2012173281A JP2012173281A JP2011049580A JP2011049580A JP2012173281A JP 2012173281 A JP2012173281 A JP 2012173281A JP 2011049580 A JP2011049580 A JP 2011049580A JP 2011049580 A JP2011049580 A JP 2011049580A JP 2012173281 A JP2012173281 A JP 2012173281A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
【解決手段】 被検体に誘起される渦電流による磁場の検出出力から被検体表層部の検出出力をキャンセルする外部信号を与えることにより表皮効果の影響を除外した。これにより、被検体表層部の検出出力によってマスキングされていた被検体内部の検出出力を取り出すことができ、被検体の内部や裏面の探傷および肉厚検査などができるようになった。
【選択図】図1
Description
2 移相器
3 パワーアンプ
4 励磁手段
5 検出手段
6 ポテンショメータ
7 演算回路
8 増幅回路
9 増幅回路
10 検波回路
11 コンピュータ
20 被検体
Claims (1)
- 信号波形生成器と被検体に交番磁場を印加可能な励磁コイルと、前記励磁コイルの近傍位置に配置され被検体から発せられる渦電流による磁場を検知する検出コイルと、前記検出コイルの検出信号に対し振幅がほぼ等しく逆位相の正弦波信号を生成する回路を備えて該逆位相正弦波生成回路出力と前記検出コイルの検出信号との和を出力する回路を備え、或は検出コイルの検出信号と振幅がほぼ等しく同位相の正弦波信号を生成する回路を備えて該同位相正弦波生成回路出力と前記検出コイルの検出信号との差を出力する回路を備え、該和信号出力或は該差信号出力の残余の信号を検波する回路手段を備えて、表皮効果による被検体表層部の検出出力をキャンセルして該被検体表層部の検出出力によってマスキングされていた被検体内部の出力を検出することを特長とする交番磁場を利用した非破壊検査装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011049580A JP4756409B1 (ja) | 2011-02-18 | 2011-02-18 | 交番磁場を利用した非破壊検査装置および非破壊検査方法 |
PCT/JP2012/052836 WO2012111500A1 (ja) | 2011-02-18 | 2012-02-08 | 交番磁場を利用した非破壊検査装置および非破壊検査方法 |
EP12746911.2A EP2677311A4 (en) | 2011-02-18 | 2012-02-08 | NON-DESTRUCTIVE TEST DEVICE WITH A MAGNETIC CHANGE FIELD AND METHOD FOR NON-DESTRUCTIVE TESTING |
US13/965,958 US9453817B2 (en) | 2011-02-18 | 2013-08-13 | Nondestructive inspection device using alternating magnetic field, and nondestructive inspection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2011049580A JP4756409B1 (ja) | 2011-02-18 | 2011-02-18 | 交番磁場を利用した非破壊検査装置および非破壊検査方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP4756409B1 JP4756409B1 (ja) | 2011-08-24 |
JP2012173281A true JP2012173281A (ja) | 2012-09-10 |
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JP2011049580A Expired - Fee Related JP4756409B1 (ja) | 2011-02-18 | 2011-02-18 | 交番磁場を利用した非破壊検査装置および非破壊検査方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9453817B2 (ja) |
EP (1) | EP2677311A4 (ja) |
JP (1) | JP4756409B1 (ja) |
WO (1) | WO2012111500A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015190414A1 (ja) * | 2014-06-12 | 2015-12-17 | コニカミノルタ株式会社 | 非破壊検査装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101482347B1 (ko) * | 2012-12-27 | 2015-01-13 | 주식회사 포스코 | 강판의 내부 결함 검출 장치 및 방법 |
JP6740077B2 (ja) | 2016-10-05 | 2020-08-12 | 大日機械工業株式会社 | 非破壊検査測定システムの較正装置および非破壊検査測定方法 |
JP6432645B1 (ja) * | 2017-06-28 | 2018-12-05 | Jfeスチール株式会社 | 焼鈍炉中の鋼板の磁気変態率測定方法および磁気変態率測定装置、連続焼鈍プロセス、連続溶融亜鉛めっきプロセス |
RU2694428C1 (ru) * | 2018-11-26 | 2019-07-15 | Общество с ограниченной ответственностью "Научно-внедренческое предприятие "Кропус" (ООО "НВП "Кропус") | Измерительный тракт вихретокового дефектоскопа для контроля труб |
CN111380952B (zh) * | 2018-12-29 | 2023-05-19 | 宝武特种冶金有限公司 | 一种用于无缝钢管内壁污物及渗碳缺陷的无损检测装置与方法 |
CN111337569A (zh) * | 2020-04-16 | 2020-06-26 | 中国科学院海洋研究所 | 一种新型的脉冲近场、远场组合式涡流传感器 |
CN111896610B (zh) * | 2020-08-21 | 2022-11-25 | 爱德森(厦门)电子有限公司 | 提高金属材料间隙检测精度和检测范围的方法及其装置 |
CN111982967A (zh) * | 2020-08-22 | 2020-11-24 | 核动力运行研究所 | 一种基于永磁铁的磁饱和脉冲涡流红外无损评价方法 |
BR102020024201A2 (pt) * | 2020-11-26 | 2022-05-31 | Vallourec Soluções Tubulares Do Brasil S.A. | Sistema e método de inspeção de peças metálicas |
Family Cites Families (16)
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US3823368A (en) * | 1954-07-14 | 1974-07-09 | Magnetic Analysis Corp | Calibration and balance system in pulse eddy current testing apparatus |
US3916301A (en) * | 1974-05-20 | 1975-10-28 | Republic Steel Corp | Magnetic flaw detection apparatus |
US4191922A (en) * | 1978-03-14 | 1980-03-04 | Republic Steel Corporation | Electromagnetic flaw detection system and method incorporating improved automatic coil error signal compensation |
FR2451032A1 (fr) * | 1979-03-09 | 1980-10-03 | Commissariat Energie Atomique | Appareil numerique pour le controle de pieces par courants de foucault |
JPS56130652A (en) * | 1980-03-18 | 1981-10-13 | Anritsu Corp | Metal discriminating device |
FR2570501B1 (fr) * | 1984-09-20 | 1987-12-18 | Siderurgie Fse Inst Rech | Procede de detection de defauts de surface par courants de foucault et dispositif mettant en oeuvre ce procede |
DE3720686A1 (de) * | 1987-06-23 | 1989-01-05 | Foerster Inst Dr Friedrich | Verfahren zum untersuchen eines objektes |
JP2622536B2 (ja) | 1990-03-16 | 1997-06-18 | 株式会社日本非破壊計測研究所 | 渦流探傷方法及びその装置 |
JPH0854375A (ja) * | 1994-08-11 | 1996-02-27 | Kaisei Enjinia Kk | 電磁誘導型検査装置 |
JP3753499B2 (ja) | 1997-04-14 | 2006-03-08 | 株式会社竹中工務店 | 磁気探傷装置及び方法 |
JPH10293122A (ja) * | 1997-04-17 | 1998-11-04 | Nkk Corp | 金属体の探傷装置及び探傷方法 |
JP3266128B2 (ja) | 1999-02-08 | 2002-03-18 | 日本鋼管株式会社 | 漏洩磁束探傷法及び漏洩磁束探傷装置 |
CN1306267C (zh) | 2001-09-21 | 2007-03-21 | 德克工程株式会社 | 金属异物检测方法及其装置 |
DE10229735A1 (de) * | 2002-07-02 | 2004-01-22 | rinas Gerätetechnik GmbH | Verfahren zum Erkennen und Lokalisieren von Materialfehlern |
JP3896489B2 (ja) | 2004-07-16 | 2007-03-22 | 国立大学法人 岡山大学 | 磁気検知装置及び物質判定装置 |
JP2010048552A (ja) * | 2006-12-14 | 2010-03-04 | Osaka Univ | 非破壊検査装置及び非破壊検査方法 |
-
2011
- 2011-02-18 JP JP2011049580A patent/JP4756409B1/ja not_active Expired - Fee Related
-
2012
- 2012-02-08 EP EP12746911.2A patent/EP2677311A4/en not_active Withdrawn
- 2012-02-08 WO PCT/JP2012/052836 patent/WO2012111500A1/ja active Application Filing
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2013
- 2013-08-13 US US13/965,958 patent/US9453817B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015190414A1 (ja) * | 2014-06-12 | 2015-12-17 | コニカミノルタ株式会社 | 非破壊検査装置 |
Also Published As
Publication number | Publication date |
---|---|
US20140055130A1 (en) | 2014-02-27 |
EP2677311A1 (en) | 2013-12-25 |
EP2677311A4 (en) | 2014-07-02 |
WO2012111500A1 (ja) | 2012-08-23 |
JP4756409B1 (ja) | 2011-08-24 |
US9453817B2 (en) | 2016-09-27 |
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