JPS573041A - Ultrasonic flaw detector - Google Patents
Ultrasonic flaw detectorInfo
- Publication number
- JPS573041A JPS573041A JP7728380A JP7728380A JPS573041A JP S573041 A JPS573041 A JP S573041A JP 7728380 A JP7728380 A JP 7728380A JP 7728380 A JP7728380 A JP 7728380A JP S573041 A JPS573041 A JP S573041A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- shape
- pulses
- specimen
- 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.)
- Granted
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
- G01N29/06—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
- 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
- G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
- G01N29/38—Detecting the response signal, e.g. electronic circuits specially adapted therefor by time filtering, e.g. using time gates
-
- 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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4445—Classification of defects
-
- 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
- G01N2291/02854—Length, thickness
-
- 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
-
- 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
- G01N2291/10—Number of transducers
- G01N2291/101—Number of transducers one transducer
Landscapes
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE:To detect the presence or not of any defect easily by making the shape signal of a specimen from the reflected wave signal outputted from a gate circuit and subtracting the shape signal from the reflected wave signal. CONSTITUTION:When an oscillating circuit 9 generates pulses, a pulse generating circuit 10 generates pulses, by which pulses a radio transmitting and receiving vibrator 1a generates ultrasonic waves. The ultrasonic waves enter a specimen 2. On the other hand, the pulses of the circuit 9 are applied to a gate circuit 14 as well. The gated receiving signal is stored in a storage circuit 18 by a storage circuit control circuit 17. A shape signal generating circuit 16 makes the shape signal corresponding to the shape of the specimen 2 from the receiving signal and stores the same in a storage circuit 19. The content of the circuit 19 is subtracted from the content of the circuit 18 by a subtractor 20, and the result of the subtraction is fed together with the scanning signals generated by a position signal generator 12 and a scanning signal generator 11, to a display device 21, and at the same time, the presence of any defect or not is decided in a defect decision circuit 22.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7728380A JPS573041A (en) | 1980-06-09 | 1980-06-09 | Ultrasonic flaw detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7728380A JPS573041A (en) | 1980-06-09 | 1980-06-09 | Ultrasonic flaw detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS573041A true JPS573041A (en) | 1982-01-08 |
JPS6337902B2 JPS6337902B2 (en) | 1988-07-27 |
Family
ID=13629532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7728380A Granted JPS573041A (en) | 1980-06-09 | 1980-06-09 | Ultrasonic flaw detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS573041A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5188033A (en) * | 1975-01-30 | 1976-08-02 | ||
JPS61155856A (en) * | 1984-12-28 | 1986-07-15 | Toshiba Corp | Ultrasonic flaw inspector |
JP2012047512A (en) * | 2010-08-25 | 2012-03-08 | Jfe Steel Corp | Inspection method and inspection equipment of tooth part |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0569501U (en) * | 1992-02-21 | 1993-09-21 | 株式会社ホクシン | Charcoal stove for leisure |
JPH07100073A (en) * | 1993-09-09 | 1995-04-18 | Nippon Tanzou Kk | Roaster |
-
1980
- 1980-06-09 JP JP7728380A patent/JPS573041A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5188033A (en) * | 1975-01-30 | 1976-08-02 | ||
JPS61155856A (en) * | 1984-12-28 | 1986-07-15 | Toshiba Corp | Ultrasonic flaw inspector |
JP2012047512A (en) * | 2010-08-25 | 2012-03-08 | Jfe Steel Corp | Inspection method and inspection equipment of tooth part |
Also Published As
Publication number | Publication date |
---|---|
JPS6337902B2 (en) | 1988-07-27 |
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