JP2006189413A - テールパッチを利用した磁気変形トランスデューサと、それを利用した弾性波測定装置 - Google Patents
テールパッチを利用した磁気変形トランスデューサと、それを利用した弾性波測定装置 Download PDFInfo
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- JP2006189413A JP2006189413A JP2005170183A JP2005170183A JP2006189413A JP 2006189413 A JP2006189413 A JP 2006189413A JP 2005170183 A JP2005170183 A JP 2005170183A JP 2005170183 A JP2005170183 A JP 2005170183A JP 2006189413 A JP2006189413 A JP 2006189413A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/08—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with magnetostriction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/48—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means
- G01D5/485—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means using magnetostrictive devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
- G01L3/105—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving inductive means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
Abstract
【解決手段】試験体の所定の位置に取り付けられる強磁性体パッチと、強磁性体パッチの周りに配置される円筒形絶縁体と、絶縁体の周りに巻き取られたコイルと、を含むが、コイルに電流が供給されれば、パッチが磁気変形効果によって試験体にねじり波を発生させ、強磁性体パッチは、試験体の軸方向と斜めに取り付けられ磁気変形効果によるねじり波を試験体に伝達するストリップ部と、ストリップ部の両端に形成されてコイルに電流が供給される時にストリップ部に磁束を集中させるテール部と、を含むことを特徴とする磁気変形トランスデューサ。
【選択図】図6
Description
韓国騷音工学会論文集(第14巻、第2号、pp.144〜149、2004年)
3 駆動コイル
4 第1絶縁体
5 バイアスコイル
6 第2絶縁体
8 クラック
50、60、70、80 テールパッチ
51 ストリップ部
52、53、62、63、72、73、82、83 テール部
54、55 連結部
100、110 トランスデューサ
200 バイアス電流発生器
300 超音波発生器
400 関数発生器
500 オシロスコープ
600 コンピュータ
1000 ねじり波加振及び測定のための試験装置
Claims (10)
- 試験体の所定の位置に取り付けられる強磁性体パッチと、前記強磁性体パッチの周りに配置される円筒形絶縁体と、前記絶縁体の周りに巻き取られたコイルと、を含むトランスデューサにおいて、
前記強磁性体パッチは、前記試験体の軸方向と斜めに取り付けられ前記磁気変形効果によるねじり波を前記試験体に伝達するストリップ部と、前記ストリップ部の両端に形成されて前記コイルに電流が供給される時に前記ストリップ部に磁束を集中させるテール部を含み、
前記コイルに電流が供給されれば、前記パッチが磁気変形効果によって前記試験体にねじり波を発生させることを特徴とする磁気変形トランスデューサ。 - 前記テール部は、前記軸方向と垂直な方向に形成された直四角形部分を持つ請求項1に記載の磁気変形トランスデューサ。
- 前記テール部は、前記軸方向と垂直な方向に形成された直四角形部分と、前記直四角形部分の両端にそれぞれ連結されたブランチとを含むが、前記ブランチは、前記軸方向と実質的に平行した方向に形成される請求項1に記載の磁気変形トランスデューサ。
- 前記テール部は、実質的に試験体の軸方向と平行した方向に形成される第1ブランチと、実質的に前記ストリップ部と直角方向に形成される第2ブランチと、を含む請求項1に記載の磁気変形トランスデューサ。
- 前記テール部は、実質的に試験体の軸方向と平行した方向に形成される第1ブランチと、実質的に前記ストリップ部と直角方向に形成される第2ブランチと、前記第1ブランチの末端と前記第2ブランチの末端とを連結するブランチ連結部と、を含む請求項1に記載の磁気変形トランスデューサ。
- 前記ストリップ部は、前記試験体の軸方向と所定の角度をなして取り付けられることを特徴とする請求項1に記載の磁気変形トランスデューサ。
- 前記強磁性体パッチは前記ストリップ部及び前記テール部とそれぞれ連結され、前記試験体の軸方向と平行した方向に形成される連結部をさらに含むことを特徴とする請求項1に記載の磁気変形トランスデューサ。
- 前記強磁性体パッチは、前記試験体の円周方向に沿って一定間隔で複数個が取り付けられることを特徴とする請求項1に記載の磁気変形トランスデューサ。
- 前記試験体は、所定の長さを持つ棒部材であることを特徴とする請求項1に記載の磁気変形トランスデューサ。
- 前記トランスデューサは、前記コイル及び前記絶縁体を所定間隔離れて包む外部絶縁体と、前記外部絶縁体の周りに巻き取られたバイアスコイルと、をさらに含むことを特徴とする請求項1に記載の磁気変形トランスデューサ。
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Application Number | Priority Date | Filing Date | Title |
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KR1020040118017A KR100683927B1 (ko) | 2004-12-31 | 2004-12-31 | 테일 패치를 이용한 자기변형 트랜스듀서와, 이를 이용한탄성파 측정 장치 |
Publications (2)
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JP2006189413A true JP2006189413A (ja) | 2006-07-20 |
JP4203045B2 JP4203045B2 (ja) | 2008-12-24 |
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JP2005170183A Expired - Fee Related JP4203045B2 (ja) | 2004-12-31 | 2005-06-09 | テールパッチを利用した磁気変形トランスデューサと、それを利用した弾性波測定装置 |
Country Status (4)
Country | Link |
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US (1) | US7295001B2 (ja) |
EP (1) | EP1712883A3 (ja) |
JP (1) | JP4203045B2 (ja) |
KR (1) | KR100683927B1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008076237A (ja) * | 2006-09-21 | 2008-04-03 | Toshiba Corp | 配管非破壊検査装置、配管非破壊検査方法、および発電プラント |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100677920B1 (ko) * | 2005-10-20 | 2007-02-05 | 재단법인서울대학교산학협력재단 | 자기변형 효과를 이용하여 봉이나 축, 또는 배관 부재에비틀림파를 발생 및 측정하는 방법, 그 방법을 이용한자기변형 트랜스듀서, 및 구조 진단 장치 |
JP4572227B2 (ja) * | 2007-11-29 | 2010-11-04 | 本田技研工業株式会社 | 磁歪式トルクセンサ及び電動ステアリング装置 |
KR100987730B1 (ko) * | 2008-10-15 | 2010-10-14 | 전남대학교산학협력단 | 자기 자화 자기 변형 센서 |
KR101073686B1 (ko) * | 2009-04-08 | 2011-10-14 | 서울대학교산학협력단 | 분절형 자기변형 패치 배열 트랜스듀서, 이를 구비한 구조 진단 장치 및 이 트랜스듀서의 작동 방법 |
KR101068350B1 (ko) * | 2009-07-03 | 2011-09-28 | (주)디지털초음파 | 접촉 sh-도파 자왜변환기 |
ES2602508B1 (es) | 2015-07-16 | 2017-11-30 | Universidad De Granada | Dispositivo emisor de ondas ultrasónicas de torsión y transductor que lo comprende |
US10866149B1 (en) | 2017-03-22 | 2020-12-15 | University Of Maryland, College Park | System and method for nondestructive detection of structural irregularities using a directional magnetostrictive phased array sensor with a comb-shaped magnetostrictive patch |
KR102083505B1 (ko) | 2018-10-05 | 2020-03-02 | 서울대학교산학협력단 | 유도초음파용 트랜스듀서의 출력/감도를 향상하는 공진기 장치 및 출력 향상 조절 방법 |
Family Cites Families (13)
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JPS6420678A (en) * | 1987-07-16 | 1989-01-24 | Matsushita Electric Ind Co Ltd | Torque sensor |
US4852411A (en) * | 1988-12-21 | 1989-08-01 | Eaton Corporation | Torque sensor |
US5193267A (en) * | 1989-05-29 | 1993-03-16 | Mitsubishi Denki Kabushiki Kaisha | Method of manufacturing magnetostriction stress detectors |
SE9102122D0 (sv) * | 1991-07-08 | 1991-07-08 | Skf Nova Ab | Sensor respektive foerfarande foer maetning av vridmoment och/eller krafter |
JPH09243476A (ja) * | 1996-03-07 | 1997-09-19 | Mitsubishi Materials Corp | 磁歪式トルクセンサ |
SE508383C2 (sv) * | 1996-04-19 | 1998-09-28 | Volvo Ab | Metod jämte anordning för montering av en momentgivare i motorer och drivlinor. |
SE517710C2 (sv) * | 1999-12-14 | 2002-07-09 | Abb Ab | Magnetostriktiv givare för mätning av ett vridmoment och användning av givaren |
KR100358227B1 (ko) * | 2000-03-14 | 2002-10-25 | 이곤철 | 봉강의 결함탐상용 센서 및 그 제조방법 |
US6707296B2 (en) | 2000-08-24 | 2004-03-16 | Shell Oil Company | Method for detecting cracks in electrically conducting material |
JP2003130849A (ja) | 2001-10-22 | 2003-05-08 | Nippon Steel Corp | 高感度欠陥検査法 |
KR100928532B1 (ko) * | 2002-08-30 | 2009-11-24 | 재단법인 포항산업과학연구원 | 홀 소자를 이용한 금속체 검출용 픽업 장치 |
JP2004184188A (ja) * | 2002-12-02 | 2004-07-02 | Yamaha Motor Co Ltd | 磁歪式トルクセンサ |
KR100573736B1 (ko) * | 2004-02-16 | 2006-04-25 | 재단법인서울대학교산학협력재단 | 비틀림파를 발생 및 측정할 수 있는 트랜스듀서와 이를이용한 이상진단 장치 및 방법 |
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2004
- 2004-12-31 KR KR1020040118017A patent/KR100683927B1/ko active IP Right Grant
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2005
- 2005-03-30 US US11/092,976 patent/US7295001B2/en active Active
- 2005-06-04 EP EP05253451A patent/EP1712883A3/en not_active Withdrawn
- 2005-06-09 JP JP2005170183A patent/JP4203045B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008076237A (ja) * | 2006-09-21 | 2008-04-03 | Toshiba Corp | 配管非破壊検査装置、配管非破壊検査方法、および発電プラント |
Also Published As
Publication number | Publication date |
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EP1712883A3 (en) | 2010-08-04 |
KR100683927B1 (ko) | 2007-02-15 |
EP1712883A2 (en) | 2006-10-18 |
US20060145692A1 (en) | 2006-07-06 |
JP4203045B2 (ja) | 2008-12-24 |
US7295001B2 (en) | 2007-11-13 |
KR20060078411A (ko) | 2006-07-05 |
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