JPS56117164A - Measuring device using electromagnetic ultrasonic wave - Google Patents

Measuring device using electromagnetic ultrasonic wave

Info

Publication number
JPS56117164A
JPS56117164A JP2044580A JP2044580A JPS56117164A JP S56117164 A JPS56117164 A JP S56117164A JP 2044580 A JP2044580 A JP 2044580A JP 2044580 A JP2044580 A JP 2044580A JP S56117164 A JPS56117164 A JP S56117164A
Authority
JP
Japan
Prior art keywords
energizing
coil
circuit
measuring device
contactor
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
JP2044580A
Other languages
Japanese (ja)
Inventor
Minoru Fujimoto
Takashi Kadowaki
Susumu Ito
Soji Sasaki
Kazuya 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 JP2044580A priority Critical patent/JPS56117164A/en
Publication of JPS56117164A publication Critical patent/JPS56117164A/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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE:To improve the workability of inspection by intermittently energizing an electromagnet and enabling a contactor to be moved easily during the period while the energizing is held stopped. CONSTITUTION:The measuring device using electromagnetic ultransonic wave has an electromagnet iron core 1, its energizing coil 2 and a contactor 7 consisting of a ratio transmitting-receiving coil 3, and generates ultasonic waves by applying magnetic fields to the material 6 to be examined by energizing the coil 2 and generating eddy current in the material 6 by means of these and the pulse current to be applied to the coil 3. At this time, the power source 4 for the coil 2 is so controlled as to make intermittent energizing by providing a timing control circuit 17 to the circuits which input the output of a current detector 13 and a setting circuit 15 to an operational amplifier 16 and control a thristor circuit 12 with an automatic pulse-shifting circuit 18. Hence, the contractor 7 is moved easily during measurment and the workability is improved considerably.
JP2044580A 1980-02-22 1980-02-22 Measuring device using electromagnetic ultrasonic wave Pending JPS56117164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2044580A JPS56117164A (en) 1980-02-22 1980-02-22 Measuring device using electromagnetic ultrasonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2044580A JPS56117164A (en) 1980-02-22 1980-02-22 Measuring device using electromagnetic ultrasonic wave

Publications (1)

Publication Number Publication Date
JPS56117164A true JPS56117164A (en) 1981-09-14

Family

ID=12027243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2044580A Pending JPS56117164A (en) 1980-02-22 1980-02-22 Measuring device using electromagnetic ultrasonic wave

Country Status (1)

Country Link
JP (1) JPS56117164A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059151U (en) * 1983-09-28 1985-04-24 三菱電機株式会社 Electromagnetic ultrasound application equipment
JP2011012985A (en) * 2009-06-30 2011-01-20 Hitachi Ltd Pulse excitation type eddy current flaw detection method and pulse excitation type eddy current flaw detector using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059151U (en) * 1983-09-28 1985-04-24 三菱電機株式会社 Electromagnetic ultrasound application equipment
JP2011012985A (en) * 2009-06-30 2011-01-20 Hitachi Ltd Pulse excitation type eddy current flaw detection method and pulse excitation type eddy current flaw detector using the same

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