GB2006433A - Ultrasonic Testing - Google Patents

Ultrasonic Testing

Info

Publication number
GB2006433A
GB2006433A GB7840463A GB7840463A GB2006433A GB 2006433 A GB2006433 A GB 2006433A GB 7840463 A GB7840463 A GB 7840463A GB 7840463 A GB7840463 A GB 7840463A GB 2006433 A GB2006433 A GB 2006433A
Authority
GB
United Kingdom
Prior art keywords
pole
face
outer tubular
curvature
side wall
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.)
Granted
Application number
GB7840463A
Other versions
GB2006433B (en
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.)
TI Group Services Ltd
Original Assignee
TI Group Services 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 TI Group Services Ltd filed Critical TI Group Services Ltd
Priority to GB7840463A priority Critical patent/GB2006433B/en
Publication of GB2006433A publication Critical patent/GB2006433A/en
Application granted granted Critical
Publication of GB2006433B publication Critical patent/GB2006433B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • 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
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Electromagnetic-acoustic testing apparatus comprising a magnet with a central pole (1) surrounded by an outer tubular pole (3) and transmitting and receiving coils (16 and 17) adjacent the pole-face (11) of the central pole (1), the pole-face (12) of the outer tubular pole (3) lying in a curved plane with the greater part of its area concentrated in diametrically opposite regions along a magnetic axis perpendicular to a line of curvature of the pole-face (12) so that when the pole-face is located adjacent the surface of a body (10) being tested the magnetic flux is concentrated along said magnetic axis. Said concentration of area is produced by reducing the thickness of the side wall of the outer tubular pole (3) in diametrically opposed regions along said line of curvature, for example, by forming flats (9) and/or chamfers (13) on the side wall. <IMAGE>
GB7840463A 1977-10-20 1978-10-13 Ultrasonic testing Expired GB2006433B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7840463A GB2006433B (en) 1977-10-20 1978-10-13 Ultrasonic testing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4361277 1977-10-20
GB7840463A GB2006433B (en) 1977-10-20 1978-10-13 Ultrasonic testing

Publications (2)

Publication Number Publication Date
GB2006433A true GB2006433A (en) 1979-05-02
GB2006433B GB2006433B (en) 1982-03-24

Family

ID=26265210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7840463A Expired GB2006433B (en) 1977-10-20 1978-10-13 Ultrasonic testing

Country Status (1)

Country Link
GB (1) GB2006433B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045412A2 (en) * 1980-07-31 1982-02-10 Nukem GmbH Device for testing materials
EP0069865A2 (en) * 1981-06-16 1983-01-19 Nukem GmbH Electrodynamic movable head
DE3050487C1 (en) * 1980-07-31 1983-09-15 Mannesmann AG, 4000 Düsseldorf Electrodynamic converter head
GB2120790A (en) * 1982-04-22 1983-12-07 Magnetic Analysis Corp Electromagnetic acoustic wave test apparatus
US4449411A (en) * 1982-04-22 1984-05-22 Magnetic Analysis Corporation Magnetic and ultrasonic objects testing apparatus
DE3414071C1 (en) * 1984-04-13 1985-04-11 Nukem Gmbh, 6450 Hanau Electrodynamic converter
GB2152668A (en) * 1984-01-13 1985-08-07 Nukem Gmbh Electrodynamic transducer head
EP0171118A2 (en) * 1984-08-09 1986-02-12 Shell Internationale Researchmaatschappij B.V. A transducing device for internal contactless ultrasonic inspection of pipelines or tubings
DE3448080A1 (en) * 1984-04-13 1986-08-07 Nukem Gmbh, 6450 Hanau Electrodynamic transducer
FR2597979A1 (en) * 1986-04-24 1987-10-30 Mannesmann Ag DEVICE FOR THE NON-DESTRUCTIVE TESTING OF ELECTRICALLY CONDUCTIVE MATERIALS
FR2637441A1 (en) * 1988-10-05 1990-04-06 Mannesmann Ag ELECTRODYNAMIC TRANSDUCER HEAD FOR NON-DESTRUCTIVE TEST OF PARTS
DE3904440A1 (en) * 1989-02-10 1990-08-23 Mannesmann Ag Electrodynamic transducer head
EP0458425A2 (en) * 1990-05-21 1991-11-27 MANNESMANN Aktiengesellschaft Electromagnetic transducer with permanent magnet
DE4304548A1 (en) * 1992-04-02 1993-10-14 Mannesmann Ag Test head for non-destructive testing
EP0781994A3 (en) * 1995-12-13 1997-07-16 Ebara Corporation Electromagnetic acoustic transducer and emar system
US6109108A (en) * 1995-12-13 2000-08-29 Ebara Corporation Electromagnetic acoustic transducer EMAT and inspection system with EMAR
US6839640B2 (en) 2002-03-04 2005-01-04 Ebara Corporation Method and apparatus for diagnosing damages of conductive materials

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029036A1 (en) 1980-07-31 1982-03-04 Mannesmann AG, 4000 Düsseldorf DEVICE FOR TESTING MATERIALS
DE3050487C1 (en) * 1980-07-31 1983-09-15 Mannesmann AG, 4000 Düsseldorf Electrodynamic converter head
EP0045412A3 (en) * 1980-07-31 1984-04-18 Nukem GmbH Device for testing materials
EP0045412A2 (en) * 1980-07-31 1982-02-10 Nukem GmbH Device for testing materials
EP0069865A2 (en) * 1981-06-16 1983-01-19 Nukem GmbH Electrodynamic movable head
EP0069865A3 (en) * 1981-06-16 1984-05-30 Nukem Gmbh Electrodynamic movable head
GB2120790A (en) * 1982-04-22 1983-12-07 Magnetic Analysis Corp Electromagnetic acoustic wave test apparatus
US4449411A (en) * 1982-04-22 1984-05-22 Magnetic Analysis Corporation Magnetic and ultrasonic objects testing apparatus
US4596147A (en) * 1984-01-13 1986-06-24 Nukem Gmbh Electrodynamic transducer head
GB2152668A (en) * 1984-01-13 1985-08-07 Nukem Gmbh Electrodynamic transducer head
US4602512A (en) * 1984-04-13 1986-07-29 Nukem Gmbh Electro-dynamic transducer
DE3414071C1 (en) * 1984-04-13 1985-04-11 Nukem Gmbh, 6450 Hanau Electrodynamic converter
DE3448080A1 (en) * 1984-04-13 1986-08-07 Nukem Gmbh, 6450 Hanau Electrodynamic transducer
EP0171118A2 (en) * 1984-08-09 1986-02-12 Shell Internationale Researchmaatschappij B.V. A transducing device for internal contactless ultrasonic inspection of pipelines or tubings
EP0171118A3 (en) * 1984-08-09 1988-12-21 Shell Internationale Researchmaatschappij B.V. A transducing device for internal contactless ultrasonic inspection of pipelines or tubings
FR2597979A1 (en) * 1986-04-24 1987-10-30 Mannesmann Ag DEVICE FOR THE NON-DESTRUCTIVE TESTING OF ELECTRICALLY CONDUCTIVE MATERIALS
US5050703A (en) * 1988-10-05 1991-09-24 Mannesmann Aktiengesellschaft Electrodynamic transducer head
DE3834248A1 (en) * 1988-10-05 1990-04-12 Mannesmann Ag ELECTRODYNAMIC CONVERTER HEAD
FR2637441A1 (en) * 1988-10-05 1990-04-06 Mannesmann Ag ELECTRODYNAMIC TRANSDUCER HEAD FOR NON-DESTRUCTIVE TEST OF PARTS
DE3904440A1 (en) * 1989-02-10 1990-08-23 Mannesmann Ag Electrodynamic transducer head
EP0458425A2 (en) * 1990-05-21 1991-11-27 MANNESMANN Aktiengesellschaft Electromagnetic transducer with permanent magnet
EP0458425A3 (en) * 1990-05-21 1993-02-24 Mannesmann Aktiengesellschaft Electromagnetic transducer with permanent magnet
DE4304548A1 (en) * 1992-04-02 1993-10-14 Mannesmann Ag Test head for non-destructive testing
EP0781994A3 (en) * 1995-12-13 1997-07-16 Ebara Corporation Electromagnetic acoustic transducer and emar system
US5811682A (en) * 1995-12-13 1998-09-22 Ebara Corporation Electromagnetic acoustic transducer EMAT and inspection system with EMAR
US6109108A (en) * 1995-12-13 2000-08-29 Ebara Corporation Electromagnetic acoustic transducer EMAT and inspection system with EMAR
US6839640B2 (en) 2002-03-04 2005-01-04 Ebara Corporation Method and apparatus for diagnosing damages of conductive materials

Also Published As

Publication number Publication date
GB2006433B (en) 1982-03-24

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Legal Events

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