JPS5750655A - Ultrasonic flaw detector - Google Patents
Ultrasonic flaw detectorInfo
- 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
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.
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)
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)
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 |
-
1980
- 1980-09-11 JP JP55126330A patent/JPS5750655A/en active Pending
Patent Citations (1)
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)
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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