JPS57203951A - Automatic ultrasonic flaw detector - Google Patents

Automatic ultrasonic flaw detector

Info

Publication number
JPS57203951A
JPS57203951A JP56088191A JP8819181A JPS57203951A JP S57203951 A JPS57203951 A JP S57203951A JP 56088191 A JP56088191 A JP 56088191A JP 8819181 A JP8819181 A JP 8819181A JP S57203951 A JPS57203951 A JP S57203951A
Authority
JP
Japan
Prior art keywords
probe
systems
circuit
attenuators
reading
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
JP56088191A
Other languages
Japanese (ja)
Inventor
Kimio Kanda
Yukio Kakinuma
Akisuke Naruse
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 Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
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 Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP56088191A priority Critical patent/JPS57203951A/en
Publication of JPS57203951A publication Critical patent/JPS57203951A/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
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • 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
    • 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
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • 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)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To solve a problem that reading a crest value is impossible due to a saturation of a circuit, by using a plurality of amplifying circuit systems having a different amplification degree or amplification characteristic and by reading the outputs thereof. CONSTITUTION:A pulser 1 generates a high-voltage pulse periodically to excite an ultrasonic probe 2. An ultrasonic pulse transmitted from the probe 2 is applied to a substance 3 to be detected and a reflected wave from an acoustically discontinuous part is received by the probe 2. The signal of this reception is subjected to impedance transformation in an impedance transforming circuit 4, separated into two systems and supplied to attenuators 5 and 6. Amplifying circuits 7 and 8 amplify signals of the attenuators 5 and 6. A computer 15 performs instruction of a synchronous signal, collection and recording of data, preparation of a range-amplitude compensating function, etc. The circuits 7 and 8 is made to have different amplification in the respective systems.
JP56088191A 1981-06-10 1981-06-10 Automatic ultrasonic flaw detector Pending JPS57203951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56088191A JPS57203951A (en) 1981-06-10 1981-06-10 Automatic ultrasonic flaw detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56088191A JPS57203951A (en) 1981-06-10 1981-06-10 Automatic ultrasonic flaw detector

Publications (1)

Publication Number Publication Date
JPS57203951A true JPS57203951A (en) 1982-12-14

Family

ID=13936007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56088191A Pending JPS57203951A (en) 1981-06-10 1981-06-10 Automatic ultrasonic flaw detector

Country Status (1)

Country Link
JP (1) JPS57203951A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895869A (en) * 1972-03-18 1973-12-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895869A (en) * 1972-03-18 1973-12-08

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