JPS5739346A - Identifying device for reflection body by frequency spectra - Google Patents
Identifying device for reflection body by frequency spectraInfo
- Publication number
- JPS5739346A JPS5739346A JP55115120A JP11512080A JPS5739346A JP S5739346 A JPS5739346 A JP S5739346A JP 55115120 A JP55115120 A JP 55115120A JP 11512080 A JP11512080 A JP 11512080A JP S5739346 A JPS5739346 A JP S5739346A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- frequency
- deltaf
- cracking
- output circuit
- 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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
- G01N29/4427—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with stored values, e.g. threshold values
-
- 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
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
-
- 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
- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
- G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
-
- 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
- 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
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
-
- 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
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
Landscapes
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To identify the worked part of the internal surface and cracking of an object to be examined by extracting characteristic parameters, and comparing these parameters with the empirical values having beforhand been obtained. CONSTITUTION:In order to identify the characteristics of reflection bodies F1, F2 existing in an object 1 to be examined, a frequency analyzing circuit 4, a characteristic extraction circuit 5, an output circuit 6 and a data storage circuit 7 are provided other than a contactor 2 and an ultrasonic wave receiver 3. The circuit 4 calculates spectrum intensity q(f) from the prescribed time width tau of the RF signal of an ultrasonic echo (r). The circuit 5 extracts gravity frequency fG and frequency width DELTAf from frequency spectra. The output circuit 6 is a circuit which plots the gravity frequency fG and the frequency width DELTAf at the frequency spectra of the ultrasonic frequency echoes from a certain reflection body F on a two dimensional map. The boundary line identifying the worked part of the internal surface and cracking is beforehand stored as input information Ex in the circuit 7 based on the results of the experiments using known test pieces, and is inputted from said circuit 7 to the output circuit 6.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55115120A JPS5739346A (en) | 1980-08-20 | 1980-08-20 | Identifying device for reflection body by frequency spectra |
US06/274,428 US4428235A (en) | 1980-06-20 | 1981-06-17 | Non-destructive inspection by frequency spectrum resolution |
CA000380071A CA1169955A (en) | 1980-06-20 | 1981-06-18 | Non-destructive inspection by frequency spectrum resolution |
DE8181104728T DE3169659D1 (en) | 1980-06-20 | 1981-06-19 | Non-destructive inspection by frequency spectrum resolution |
EP81104728A EP0042601B1 (en) | 1980-06-20 | 1981-06-19 | Non-destructive inspection by frequency spectrum resolution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55115120A JPS5739346A (en) | 1980-08-20 | 1980-08-20 | Identifying device for reflection body by frequency spectra |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5739346A true JPS5739346A (en) | 1982-03-04 |
JPS6332142B2 JPS6332142B2 (en) | 1988-06-28 |
Family
ID=14654741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55115120A Granted JPS5739346A (en) | 1980-06-20 | 1980-08-20 | Identifying device for reflection body by frequency spectra |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5739346A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5932808A (en) * | 1982-08-18 | 1984-02-22 | Nippon Denshi Kiki Kk | Individual discriminating method in ultrasonic wave type detecting device |
JPS61181957A (en) * | 1985-02-08 | 1986-08-14 | Hitachi Ltd | Metal material inspecting device |
JP2002514749A (en) * | 1998-05-13 | 2002-05-21 | アックスチール リミテッド | Metallurgical furnace temperature measurement method |
JP2019211480A (en) * | 2018-06-05 | 2019-12-12 | エルモス セミコンダクタ アーゲー | Method for detecting obstacle by means of reflected ultrasonic wave |
JP2020201057A (en) * | 2019-06-06 | 2020-12-17 | 一般財団法人電力中央研究所 | Damage evaluation device for metal weld zone |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05644U (en) * | 1991-06-12 | 1993-01-08 | 本州製紙株式会社 | Bottle with cutting protrusion |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5590947U (en) * | 1978-12-20 | 1980-06-23 |
-
1980
- 1980-08-20 JP JP55115120A patent/JPS5739346A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5590947U (en) * | 1978-12-20 | 1980-06-23 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5932808A (en) * | 1982-08-18 | 1984-02-22 | Nippon Denshi Kiki Kk | Individual discriminating method in ultrasonic wave type detecting device |
JPS61181957A (en) * | 1985-02-08 | 1986-08-14 | Hitachi Ltd | Metal material inspecting device |
JPH0572541B2 (en) * | 1985-02-08 | 1993-10-12 | Hitachi Ltd | |
JP2002514749A (en) * | 1998-05-13 | 2002-05-21 | アックスチール リミテッド | Metallurgical furnace temperature measurement method |
JP2019211480A (en) * | 2018-06-05 | 2019-12-12 | エルモス セミコンダクタ アーゲー | Method for detecting obstacle by means of reflected ultrasonic wave |
US11117518B2 (en) * | 2018-06-05 | 2021-09-14 | Elmos Semiconductor Se | Method for detecting an obstacle by means of reflected ultrasonic waves |
JP2020201057A (en) * | 2019-06-06 | 2020-12-17 | 一般財団法人電力中央研究所 | Damage evaluation device for metal weld zone |
Also Published As
Publication number | Publication date |
---|---|
JPS6332142B2 (en) | 1988-06-28 |
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