JPS57182646A - Ultrasonic flaw detector - Google Patents

Ultrasonic flaw detector

Info

Publication number
JPS57182646A
JPS57182646A JP56068565A JP6856581A JPS57182646A JP S57182646 A JPS57182646 A JP S57182646A JP 56068565 A JP56068565 A JP 56068565A JP 6856581 A JP6856581 A JP 6856581A JP S57182646 A JPS57182646 A JP S57182646A
Authority
JP
Japan
Prior art keywords
deciding
welding part
counting
result
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
Application number
JP56068565A
Other languages
Japanese (ja)
Other versions
JPS6312538B2 (en
Inventor
Seiji Yamamoto
Tetsuya Suga
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56068565A priority Critical patent/JPS57182646A/en
Publication of JPS57182646A publication Critical patent/JPS57182646A/en
Publication of JPS6312538B2 publication Critical patent/JPS6312538B2/ja
Granted 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
    • 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
    • G01N29/44—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
    • G01N2291/26—Scanned objects
    • G01N2291/267—Welds
    • G01N2291/2675—Seam, butt welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (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 automatically detect a flaw over the whole area of a welding part, by counting a quality deciding result of the welding part, comparing this counting result with a quality deciding value of the whole material to be detected, which has been set in advance, deciding its result, and outputting the counting result and the deciding result. CONSTITUTION:The sum of the number of defects of a welding part in a flaw detecting range 14, and the number of pseudo defects of an unwelded part is counted by a defect number counting circuit 10. On the other hand, the number of defects is counted by use of a test piece and by the same method, and is stored in a defect number correcting memory 16. When contents of the corresponding memory 16 are subtracted from a counting value of the counting circuit 10 by a subtracting circuit 17, a flaw is detected over the almost whole area of a welding part 3. An output of this subtracting circuit 17 and a deciding value set by a deciding reference setting device 18 are decided by a welding part quality deciding circuit 18, and a deciding result of each welding part is counted by a defective welding part number counting circuit 21. This counting value is compared with the deciding value set by the setting device 19 by a quality deciding circuit 12, and a quality deciding result of the whole material to be detected is outputted. In this way, the whole area of the welding part is detected as to its flaw automatically.
JP56068565A 1981-05-07 1981-05-07 Ultrasonic flaw detector Granted JPS57182646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56068565A JPS57182646A (en) 1981-05-07 1981-05-07 Ultrasonic flaw detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56068565A JPS57182646A (en) 1981-05-07 1981-05-07 Ultrasonic flaw detector

Publications (2)

Publication Number Publication Date
JPS57182646A true JPS57182646A (en) 1982-11-10
JPS6312538B2 JPS6312538B2 (en) 1988-03-19

Family

ID=13377406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56068565A Granted JPS57182646A (en) 1981-05-07 1981-05-07 Ultrasonic flaw detector

Country Status (1)

Country Link
JP (1) JPS57182646A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192859A (en) * 1981-05-22 1982-11-27 Mitsubishi Electric Corp Ultrasonic flaw inspector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192859A (en) * 1981-05-22 1982-11-27 Mitsubishi Electric Corp Ultrasonic flaw inspector

Also Published As

Publication number Publication date
JPS6312538B2 (en) 1988-03-19

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