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JPS56128455A - Ultrasonic flaw detecting method - Google Patents

Ultrasonic flaw detecting method

Info

Publication number
JPS56128455A
JPS56128455A JP3236080A JP3236080A JPS56128455A JP S56128455 A JPS56128455 A JP S56128455A JP 3236080 A JP3236080 A JP 3236080A JP 3236080 A JP3236080 A JP 3236080A JP S56128455 A JPS56128455 A JP S56128455A
Authority
JP
Japan
Prior art keywords
defect
faces
probe
detected
discrimination
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
JP3236080A
Other languages
Japanese (ja)
Inventor
Koji Inazaki
Kozo Ozaki
Mitsuo Yoshida
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP3236080A priority Critical patent/JPS56128455A/en
Publication of JPS56128455A publication Critical patent/JPS56128455A/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
    • G01N29/06—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
    • G01N29/04—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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/32—Arrangements for suppressing undesired influences, e.g. temperature or pressure variations, compensating for signal noise
    • 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
    • G01N2291/04—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
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/056—Angular incidence, angular propagation

Landscapes

  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To realize a highly accurate detection for both the position of defect and the pattern and ensure a discrimination between a defect and noise, by giving the rock to a probe from the four faces. CONSTITUTION:A flaw detection is carried out for the eintire cross section of the object 1 to be inspected by radiating an ultrasonic beam while giving the rock to the probe through the probes provided on the four faces with a prescribed distance l secured from the object 1. Thus a detection is given to the presence or absence of a defect as well as the position and form of the defect. Then the angle theta of inclination of the probe, the beam distance up to the surface of the object 1 and the beam distance from the surface of the object 1 to the defect are detected with every moment. Thus the coordinates of both the surface of the object 1 and the defect are calculated, and then both the position from the surface of the object 1 to the defect and the form of the defect can be detected in a high accuracy by combining the coordinates. Then both the position and form of the defect can be detected in a high accuracy on the cross section of the object 1 through a combination of the four faces. At the same time, a discrimination is possible between the defect and the noise based on the degree of coincidence among the electric signals obtained from the four faces.
JP3236080A 1980-03-14 1980-03-14 Ultrasonic flaw detecting method Pending JPS56128455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3236080A JPS56128455A (en) 1980-03-14 1980-03-14 Ultrasonic flaw detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3236080A JPS56128455A (en) 1980-03-14 1980-03-14 Ultrasonic flaw detecting method

Publications (1)

Publication Number Publication Date
JPS56128455A true JPS56128455A (en) 1981-10-07

Family

ID=12356782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3236080A Pending JPS56128455A (en) 1980-03-14 1980-03-14 Ultrasonic flaw detecting method

Country Status (1)

Country Link
JP (1) JPS56128455A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012008144A1 (en) * 2010-07-12 2012-01-19 株式会社 東芝 Ultrasonic flaw detecting apparatus and ultrasonic flaw detecting method
CN105717199A (en) * 2016-01-26 2016-06-29 陆雷俊 Ultrasonic transverse and longitudinal section element-separating detection method for stainless steel and nickel-based steel weld joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012008144A1 (en) * 2010-07-12 2012-01-19 株式会社 東芝 Ultrasonic flaw detecting apparatus and ultrasonic flaw detecting method
JP2012021814A (en) * 2010-07-12 2012-02-02 Toshiba Corp Ultrasonic test equipment and ultrasonic flaw detection method
CN105717199A (en) * 2016-01-26 2016-06-29 陆雷俊 Ultrasonic transverse and longitudinal section element-separating detection method for stainless steel and nickel-based steel weld joint
CN105717199B (en) * 2016-01-26 2018-11-16 陆雷俊 A kind of stainless steel, Ni-based steel the welding line ultrasonic first detection method in face point in length and breadth

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