JPS5750655A - Ultrasonic flaw detector - Google Patents

Ultrasonic flaw detector

Info

Publication number
JPS5750655A
JPS5750655A JP55126330A JP12633080A JPS5750655A JP S5750655 A JPS5750655 A JP S5750655A JP 55126330 A JP55126330 A JP 55126330A JP 12633080 A JP12633080 A JP 12633080A JP S5750655 A JPS5750655 A JP S5750655A
Authority
JP
Japan
Prior art keywords
defect
echo
phase
waves
wave
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
JP55126330A
Other languages
Japanese (ja)
Inventor
Nobuo Uesugi
Kazuhiro Tsumura
Keiichi Sasaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55126330A priority Critical patent/JPS5750655A/en
Publication of JPS5750655A publication Critical patent/JPS5750655A/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
    • G01N29/04—Analysing solids
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G01N29/075—Analysing solids by measuring propagation velocity or propagation time of acoustic waves by measuring or comparing phase angle
    • 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
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0609—Display arrangements, e.g. colour displays
    • 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
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0609—Display arrangements, e.g. colour displays
    • G01N29/0618—Display arrangements, e.g. colour displays synchronised with scanning, e.g. in real-time
    • 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
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (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

PURPOSE:To easily discriminate a boundary echo wave and a defect echo wave and improve the accuracy of detection by discriminating the phase of the echo waves and displaying phase inversion components thereof. CONSTITUTION:If ultrasonic waves are transmitted in a pulse-like manner into a material by applying ultrasonic driving current from a transmitter 3 to a transducer TD1 while moving the TD1, echo waves are received in the TD1 by the reflection from a boundary face (c) or a defect (d). In the case of scanning the TD1 in an F direction, the phase of the echo waves shows an in-phase first and when the TD1 moves up to the position where a defect echo wave is detected, the phase of the echo waves inverts to show an antiphase and is displayed as a difference in display color in a display device 8. Hence, in spite of infeasibility in the time separation of the defect echo waves owing to the location of the defect (d) near the boundary surface (c) or the like, the defect echo wave is easily discriminated by the difference in the colors appearing in the device 8.
JP55126330A 1980-09-11 1980-09-11 Ultrasonic flaw detector Pending JPS5750655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55126330A JPS5750655A (en) 1980-09-11 1980-09-11 Ultrasonic flaw detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55126330A JPS5750655A (en) 1980-09-11 1980-09-11 Ultrasonic flaw detector

Publications (1)

Publication Number Publication Date
JPS5750655A true JPS5750655A (en) 1982-03-25

Family

ID=14932509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55126330A Pending JPS5750655A (en) 1980-09-11 1980-09-11 Ultrasonic flaw detector

Country Status (1)

Country Link
JP (1) JPS5750655A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135450A (en) * 1982-02-05 1983-08-12 Hitachi Ltd Method and device for discrimination of defect by using ultrasonic wave
JPS58213248A (en) * 1982-06-07 1983-12-12 Hitachi Ltd Method and apparatus for discriminating defect by ultrasonic wave
JPS59141062A (en) * 1983-02-01 1984-08-13 Keizaburo Harumi Ultrasonic flaw detection
JPS59141061A (en) * 1983-02-01 1984-08-13 Keizaburo Harumi Ultrasonic flaw detection based on wave form observation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343586A (en) * 1976-10-01 1978-04-19 Hitachi Ltd Method and apparatus for ultrasonic inspector for dissimilar metals# welded portion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343586A (en) * 1976-10-01 1978-04-19 Hitachi Ltd Method and apparatus for ultrasonic inspector for dissimilar metals# welded portion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135450A (en) * 1982-02-05 1983-08-12 Hitachi Ltd Method and device for discrimination of defect by using ultrasonic wave
JPH0215024B2 (en) * 1982-02-05 1990-04-10 Hitachi Ltd
JPS58213248A (en) * 1982-06-07 1983-12-12 Hitachi Ltd Method and apparatus for discriminating defect by ultrasonic wave
JPH0157738B2 (en) * 1982-06-07 1989-12-07 Hitachi Ltd
JPS59141062A (en) * 1983-02-01 1984-08-13 Keizaburo Harumi Ultrasonic flaw detection
JPS59141061A (en) * 1983-02-01 1984-08-13 Keizaburo Harumi Ultrasonic flaw detection based on wave form observation

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