SE7811512L - ULTRA SOUND MUTE ELECTROMAGNET - Google Patents

ULTRA SOUND MUTE ELECTROMAGNET

Info

Publication number
SE7811512L
SE7811512L SE7811512A SE7811512A SE7811512L SE 7811512 L SE7811512 L SE 7811512L SE 7811512 A SE7811512 A SE 7811512A SE 7811512 A SE7811512 A SE 7811512A SE 7811512 L SE7811512 L SE 7811512L
Authority
SE
Sweden
Prior art keywords
core
composite material
electromagnet
ultra sound
magnet
Prior art date
Application number
SE7811512A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE445616B (en
Inventor
T Robinson
Original Assignee
Studsvik Energiteknik Ab
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 Studsvik Energiteknik Ab filed Critical Studsvik Energiteknik Ab
Priority to SE7811512A priority Critical patent/SE445616B/en
Priority to DE19792944819 priority patent/DE2944819A1/en
Priority to GB7938404A priority patent/GB2040584B/en
Publication of SE7811512L publication Critical patent/SE7811512L/en
Publication of SE445616B publication Critical patent/SE445616B/en

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]
    • 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

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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

In a method for carrying out non- destructive testing in electrically conductive material (10) an ultrasonic pulse is emitted from a coil (5) located in the magnetic field of an electromagnet (1), and ultrasonic waves are generated in the core (11) and the test material (10) which interact with a receiver coil (6) in the field of another magnet (2). The core (11) of the magnet (1) is made entirely or partially of a composite material consisting substantially of solid particles of magnetic material and elastic bonding agent, the composite material having a strong ultra-sound attenuating effect. According to one embodiment, the outer portion (15, 16) of the core (11) is made of said composite material and in other embodiments the peripheral portions or the entire core (18) is made of said composite material. <IMAGE>
SE7811512A 1978-11-07 1978-11-07 PROCEDURE TO INTRODUCE ELECTROMAGNETIC ULTRA SOUND IN ELECTRICALLY CONDUCTIVE MATERIALS IN THE EVENT OF DIFFERENT TESTING AND DEVICE FOR CARRYING OUT THE PROCEDURE SE445616B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE7811512A SE445616B (en) 1978-11-07 1978-11-07 PROCEDURE TO INTRODUCE ELECTROMAGNETIC ULTRA SOUND IN ELECTRICALLY CONDUCTIVE MATERIALS IN THE EVENT OF DIFFERENT TESTING AND DEVICE FOR CARRYING OUT THE PROCEDURE
DE19792944819 DE2944819A1 (en) 1978-11-07 1979-11-06 METHOD AND DEVICE FOR INITIATING ULTRASOUND IN ELECTRICALLY CONDUCTIVE MATERIAL
GB7938404A GB2040584B (en) 1978-11-07 1979-11-06 Method and apparatus for introducing electromagnetic ultra-sound into electrically conductive material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7811512A SE445616B (en) 1978-11-07 1978-11-07 PROCEDURE TO INTRODUCE ELECTROMAGNETIC ULTRA SOUND IN ELECTRICALLY CONDUCTIVE MATERIALS IN THE EVENT OF DIFFERENT TESTING AND DEVICE FOR CARRYING OUT THE PROCEDURE

Publications (2)

Publication Number Publication Date
SE7811512L true SE7811512L (en) 1980-05-08
SE445616B SE445616B (en) 1986-07-07

Family

ID=20336288

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7811512A SE445616B (en) 1978-11-07 1978-11-07 PROCEDURE TO INTRODUCE ELECTROMAGNETIC ULTRA SOUND IN ELECTRICALLY CONDUCTIVE MATERIALS IN THE EVENT OF DIFFERENT TESTING AND DEVICE FOR CARRYING OUT THE PROCEDURE

Country Status (3)

Country Link
DE (1) DE2944819A1 (en)
GB (1) GB2040584B (en)
SE (1) SE445616B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123935C2 (en) * 1981-06-16 1985-03-28 Nukem Gmbh, 6450 Hanau Electrodynamic converter
DE4011686C1 (en) * 1990-04-06 1991-07-11 Mannesmann Ag, 4000 Duesseldorf, De
DE4035592C1 (en) * 1990-11-06 1992-04-16 Mannesmann Ag, 4000 Duesseldorf, De
DE4130935A1 (en) * 1991-09-13 1993-03-25 Mannesmann Ag METHOD AND DEVICE FOR TESTING FERROMAGNETIC WORKPIECES BY MEANS OF ULTRASONIC WAVES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933536A (en) * 1972-11-03 1976-01-20 General Electric Company Method of making magnets by polymer-coating magnetic powder
DE2657957C2 (en) * 1976-12-21 1986-01-02 T.I. (Group Services) Ltd., Edgbaston, Birmingham Device for ultrasonic testing of workpieces

Also Published As

Publication number Publication date
GB2040584B (en) 1983-05-25
DE2944819A1 (en) 1980-05-14
GB2040584A (en) 1980-08-28
DE2944819C2 (en) 1988-11-10
SE445616B (en) 1986-07-07

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