JPS57154008A - Electromagnetic ultrasonic probe - Google Patents

Electromagnetic ultrasonic probe

Info

Publication number
JPS57154008A
JPS57154008A JP3936381A JP3936381A JPS57154008A JP S57154008 A JPS57154008 A JP S57154008A JP 3936381 A JP3936381 A JP 3936381A JP 3936381 A JP3936381 A JP 3936381A JP S57154008 A JPS57154008 A JP S57154008A
Authority
JP
Japan
Prior art keywords
iron core
ultrasonic probe
flaw
electromagnetic
weight
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.)
Pending
Application number
JP3936381A
Other languages
Japanese (ja)
Inventor
Takashi Kadowaki
Minoru Fujimoto
Akishi Abe
Yasuaki Sato
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3936381A priority Critical patent/JPS57154008A/en
Publication of JPS57154008A publication Critical patent/JPS57154008A/en
Pending 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]

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)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

PURPOSE:To obtain satisfactory flaw-detecting sensitivity and reduce in weight and size, by incorporating a high-permeability material into a core made of regular steel or electromagnetic pure iron. CONSTITUTION:On the centers of magnetic pole legs 9 and 10 and also of a yoke 11 of a U-shape iron core 8 for an electromagnetic ultrasonic probe, which is made of regular steel or electromagnetic pure iron, holes 12-14 are provided for insertion of cores 15-17 of a high-permeability material. It is possible, by doing so, to largely improve combined permeability of the iron core 8 as compared with that of a conventional iron core and to develop a magnetic field of 20k gauss required for ensuring satisfactory flaw-detecting sensitivity, and at the same time, it is also possible to reduce in size and weight to 1.4 kilograms.
JP3936381A 1981-03-20 1981-03-20 Electromagnetic ultrasonic probe Pending JPS57154008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3936381A JPS57154008A (en) 1981-03-20 1981-03-20 Electromagnetic ultrasonic probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3936381A JPS57154008A (en) 1981-03-20 1981-03-20 Electromagnetic ultrasonic probe

Publications (1)

Publication Number Publication Date
JPS57154008A true JPS57154008A (en) 1982-09-22

Family

ID=12550975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3936381A Pending JPS57154008A (en) 1981-03-20 1981-03-20 Electromagnetic ultrasonic probe

Country Status (1)

Country Link
JP (1) JPS57154008A (en)

Similar Documents

Publication Publication Date Title
JPS56148052A (en) Electromagnetic flaw detector for continuous magnetic material
JPS5415126A (en) Dc to dc converter
JPS5450918A (en) Iron core manufacture
JPS53124861A (en) Pincette in use of magnet
GB2022359A (en) Geophone with shaped magnetic field
JPS57154008A (en) Electromagnetic ultrasonic probe
JPS5361329A (en) Electromagnetic mechanism for camera release
JPS53125065A (en) Electromagnetic flowmeter
JPS56132558A (en) Electromagnetic ultrasonic wave probe
JPS5329527A (en) Rolled core with gap
JPS53115439A (en) Friction disc of electromagnetic clutch and brake and its preparation
JPS57208114A (en) Electromagnet spool
JPS52133282A (en) Electromagnetic induction-type ultrasonic probe
GB2083290A (en) Low-loss reactor
JPS5524613A (en) Magnetizer for magnetic flaw detection
JPS56168499A (en) Structure of electomagnetic sound generator
JPS5663171A (en) Solenoid valve
JPS5632713A (en) Transformer
GB1514161A (en) Inductor device
JPS5530841A (en) Clad magnetic material
JPS5517934A (en) Magnetron
JPS5510532A (en) Antimagnetic structure for crystal watch
JPS51126538A (en) Excited iron core
JPS5683010A (en) Electromagnetic mechanism
JPS5776804A (en) Polarized solenoid