GB2450112B - Automatic lift-off compensation for pulsed eddy current inspection - Google Patents

Automatic lift-off compensation for pulsed eddy current inspection

Info

Publication number
GB2450112B
GB2450112B GB0711349A GB0711349A GB2450112B GB 2450112 B GB2450112 B GB 2450112B GB 0711349 A GB0711349 A GB 0711349A GB 0711349 A GB0711349 A GB 0711349A GB 2450112 B GB2450112 B GB 2450112B
Authority
GB
United Kingdom
Prior art keywords
compensation
eddy current
current inspection
automatic lift
pulsed eddy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0711349A
Other languages
English (en)
Other versions
GB2450112A (en
GB0711349D0 (en
Inventor
Xiaoyu Qiao
John Hansen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GE Inspection Technologies Ltd
Original Assignee
GE Inspection Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GE Inspection Technologies Ltd filed Critical GE Inspection Technologies Ltd
Priority to GB0711349A priority Critical patent/GB2450112B/en
Publication of GB0711349D0 publication Critical patent/GB0711349D0/en
Priority to US12/134,317 priority patent/US8008913B2/en
Priority to FR0853822A priority patent/FR2917500A1/fr
Priority to JP2008151156A priority patent/JP5406468B2/ja
Priority to DE102008002883A priority patent/DE102008002883A1/de
Priority to CN200810131433.5A priority patent/CN101413923B/zh
Publication of GB2450112A publication Critical patent/GB2450112A/en
Application granted granted Critical
Publication of GB2450112B publication Critical patent/GB2450112B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G01N27/9053—Compensating for probe to workpiece spacing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
GB0711349A 2007-06-12 2007-06-12 Automatic lift-off compensation for pulsed eddy current inspection Expired - Fee Related GB2450112B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB0711349A GB2450112B (en) 2007-06-12 2007-06-12 Automatic lift-off compensation for pulsed eddy current inspection
US12/134,317 US8008913B2 (en) 2007-06-12 2008-06-06 Automatic lift-off compensation for pulsed eddy current inspection
FR0853822A FR2917500A1 (fr) 2007-06-12 2008-06-10 Compensation automatique d'eloignement pour inspection par courants de foucault pulses
JP2008151156A JP5406468B2 (ja) 2007-06-12 2008-06-10 パルス式うず電流検査のための自動リフトオフ補償
DE102008002883A DE102008002883A1 (de) 2007-06-12 2008-06-11 Automatische Lift-Off-Kompensation für Pulswirbelstromprüfung
CN200810131433.5A CN101413923B (zh) 2007-06-12 2008-06-12 用于脉冲涡流检查的自动提离补偿

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0711349A GB2450112B (en) 2007-06-12 2007-06-12 Automatic lift-off compensation for pulsed eddy current inspection

Publications (3)

Publication Number Publication Date
GB0711349D0 GB0711349D0 (en) 2007-07-25
GB2450112A GB2450112A (en) 2008-12-17
GB2450112B true GB2450112B (en) 2010-12-08

Family

ID=38331975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0711349A Expired - Fee Related GB2450112B (en) 2007-06-12 2007-06-12 Automatic lift-off compensation for pulsed eddy current inspection

Country Status (6)

Country Link
US (1) US8008913B2 (enExample)
JP (1) JP5406468B2 (enExample)
CN (1) CN101413923B (enExample)
DE (1) DE102008002883A1 (enExample)
FR (1) FR2917500A1 (enExample)
GB (1) GB2450112B (enExample)

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DE102008024394A1 (de) * 2008-05-15 2009-12-03 V&M Deutschland Gmbh Verfahren zur zerstörungsfreien Prüfung von Rohren
NL2003000C2 (nl) * 2009-06-11 2010-12-15 Roentgen Tech Dienst Bv Werkwijze voor het bepalen van tenminste een eigenschap voor een elektrisch geleidend voorwerp.
EP2574956A1 (en) * 2011-09-30 2013-04-03 GE Inspection Technologies Ltd Ultrasound imaging system and method with side lobe suppression via coherency factor weighting
JP5692007B2 (ja) * 2011-11-02 2015-04-01 トヨタ自動車株式会社 溶射皮膜の品質評価方法
JP5948004B2 (ja) * 2012-04-28 2016-07-06 東日本旅客鉄道株式会社 渦流探傷方法と渦流探傷装置
US9091664B2 (en) 2012-06-07 2015-07-28 Thomas Krause Pulsed eddy current sensor for precision measurement at-large lift-offs on metallic surfaces
CN102841137B (zh) * 2012-09-30 2014-12-03 爱德森（厦门）电子有限公司 一种旋转涡流检测干扰信号补偿方法
CN103076390B (zh) * 2012-12-27 2015-11-04 佛山市斯派力管业科技股份有限公司 应用于涡流探伤的定位方法、装置及涡流探伤仪
CN103257182B (zh) * 2013-06-07 2015-11-18 电子科技大学 一种脉冲涡流缺陷定量检测方法及检测系统
CN103336049B (zh) * 2013-06-27 2016-03-16 电子科技大学 一种消除提离效应的脉冲涡流检测方法及装置
CN103399083B (zh) * 2013-08-27 2015-09-16 南昌航空大学 一种脉冲涡流检测提离效应的抑制方法
JP6228792B2 (ja) * 2013-09-20 2017-11-08 東日本旅客鉄道株式会社 渦電流探傷方法と渦電流探傷装置
CN103808795B (zh) * 2014-02-11 2017-05-31 湖州师范学院 一种新型脉冲检测算法
JP6356579B2 (ja) 2014-11-14 2018-07-11 株式会社東芝 渦電流探傷装置および渦電流探傷方法
CN104330469B (zh) * 2014-11-28 2017-04-26 南昌航空大学 基于高通滤波的脉冲涡流检测提离效应抑制方法
US9518851B2 (en) 2014-12-03 2016-12-13 General Electric Company Probes for inspection system for substantially round hole
JP6175091B2 (ja) * 2015-03-05 2017-08-02 非破壊検査株式会社 渦電流検査装置及び渦電流検査方法
CN106404899A (zh) * 2016-08-29 2017-02-15 爱德森（厦门）电子有限公司 一种涡流检测提离晃动补偿方法
CN109764800A (zh) * 2019-01-15 2019-05-17 西南石油大学 一种基于涡流热成像阵列的管道腐蚀壁厚检测系统
CN112129830B (zh) * 2020-09-02 2023-09-12 中国人民解放军空军工程大学航空机务士官学校 基于涡流电导率的飞机金属结构烧伤检测方法
CN112800843B (zh) * 2020-12-30 2025-01-17 浙江树人学院（浙江树人大学） 针对三层导电结构缺陷的检测方法
CN113075463B (zh) * 2021-03-01 2022-05-24 北京航空航天大学 一种用于毫米波聚焦天线测量的微分探头
CN113671022B (zh) * 2021-07-14 2023-06-23 南京航空航天大学 基于脉冲涡流检测探头线圈间距交叉点的提离测量方法
CN113640369B (zh) * 2021-07-19 2023-09-26 哈尔滨工程大学 适用于金属表面裂纹的交流电磁场提离效应补偿方法
CN113673359A (zh) * 2021-07-27 2021-11-19 浙江浙能技术研究院有限公司 一种基于深度学习的提高涡流检测金属缺陷准确率的方法
CN115406959B (zh) * 2022-08-15 2025-02-28 四川德源管道科技股份有限公司 一种涡流检测电路、方法、系统、存储介质及终端
CN116068045B (zh) * 2023-04-06 2023-06-02 中国石油大学(华东) 一种抑制提离效应干扰的复合结构缺陷识别方法
CN119665796B (zh) * 2024-12-25 2025-12-09 北京理工大学 一种量化提离波动对电涡流式金属膜厚测量误差的方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383218A (en) * 1978-12-29 1983-05-10 The Boeing Company Eddy current flow detection including compensation for system variables such as lift-off

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Publication number Priority date Publication date Assignee Title
US4303885A (en) * 1979-06-18 1981-12-01 Electric Power Research Institute, Inc. Digitally controlled multifrequency eddy current test apparatus and method
US4609870A (en) * 1981-03-27 1986-09-02 Hocking Electronics Limited Lift off compensation of eddy current crack detection system by controlling damping resistance of oscillator
US4620152A (en) * 1983-01-11 1986-10-28 Amf Tuboscope, Inc. Lift-off compensation of eddy current probes by translating without rotation the X-Y coordinate plot of the complex locus of the probe output
JPH01316655A (ja) * 1988-06-16 1989-12-21 Nippon Hihakai Keisoku Kenkyusho:Kk 渦流探傷装置
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
US5233297A (en) * 1990-08-06 1993-08-03 Atlantic Richfield Company Transient electromagnetic method and apparatus for inspecting conductive objects utilizing sensors that move during inspection
US5394084A (en) * 1991-12-23 1995-02-28 The Boeing Company Method and apparatus for reducing errors in eddy-current conductivity measurements due to lift-off by interpolating between a plurality of reference conductivity measurements
US5371461A (en) * 1992-06-26 1994-12-06 General Electric Company Apparatus and method for compensating for variations in the lift-off of eddy current surface inspection array elements
US6291992B1 (en) * 1996-07-12 2001-09-18 Shell Oil Company Eddy current inspection technique
CA2302715C (en) * 1997-09-08 2006-03-21 Charles Gerard Willen Rotary turning attachment equipped with at least two tools
JP2000046802A (ja) * 1998-07-27 2000-02-18 Non-Destructive Inspection Co Ltd 渦流探傷用センサヘッド
JP3758439B2 (ja) 1999-12-20 2006-03-22 日本精工株式会社 曲面を有する被検査体の欠陥を曲面に沿って非接触で検出する方法
US6344741B1 (en) 2000-06-20 2002-02-05 Her Majesty The Queen As Represented By The Minister Of National Defence In Right Of Canada Pulsed eddy current method for detection of corrosion in multilayer structures using the lift-off point of intersection
CA2312101C (en) 2000-06-22 2004-01-06 Sylvain R. Giguere In-service detection of corrosion in multi-layer structure using the lift-off point of intersection
US6593737B2 (en) * 2000-08-24 2003-07-15 Shell Oil Company Method for measuring the wall thickness of an electrically conductive object
US6570379B2 (en) * 2000-08-24 2003-05-27 Shell Oil Company Method for inspecting an object of electrically conducting material
RU2299399C2 (ru) * 2002-02-26 2007-05-20 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Определение профиля поверхности объекта
US7005851B2 (en) * 2003-09-30 2006-02-28 General Electric Company Methods and apparatus for inspection utilizing pulsed eddy current

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383218A (en) * 1978-12-29 1983-05-10 The Boeing Company Eddy current flow detection including compensation for system variables such as lift-off

Also Published As

Publication number Publication date
FR2917500A1 (fr) 2008-12-19
JP2009002945A (ja) 2009-01-08
DE102008002883A1 (de) 2008-12-24
JP5406468B2 (ja) 2014-02-05
GB2450112A (en) 2008-12-17
GB0711349D0 (en) 2007-07-25
CN101413923B (zh) 2013-08-21
CN101413923A (zh) 2009-04-22
US20080309328A1 (en) 2008-12-18
US8008913B2 (en) 2011-08-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20210612