JPS6474443A - Automatic ultrasonic flaw detecting method for weld zone - Google Patents

Automatic ultrasonic flaw detecting method for weld zone

Info

Publication number
JPS6474443A
JPS6474443A JP62231730A JP23173087A JPS6474443A JP S6474443 A JPS6474443 A JP S6474443A JP 62231730 A JP62231730 A JP 62231730A JP 23173087 A JP23173087 A JP 23173087A JP S6474443 A JPS6474443 A JP S6474443A
Authority
JP
Japan
Prior art keywords
weld
weld zone
detection range
flaw detection
welded
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
JP62231730A
Other languages
Japanese (ja)
Other versions
JPH0726940B2 (en
Inventor
Minoru Yashima
Tadashi Nobushige
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP62231730A priority Critical patent/JPH0726940B2/en
Publication of JPS6474443A publication Critical patent/JPS6474443A/en
Publication of JPH0726940B2 publication Critical patent/JPH0726940B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N29/11—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
    • 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
    • G01N2291/269—Various geometry objects
    • G01N2291/2695—Bottles, containers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (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 remove noises from the bead surfaces of the weld reinforcement parts of a fillet weld zone or butt weld zone by setting an effective flaw detection range in a section perpendicular to a weld line preliminarily and storing the position of a reflection point as defect data only when the position is within the effective flaw detection range. CONSTITUTION:The effective flaw detection range in the section perpendicular to the weld line is set preliminarily by a computer 10 according to various elements regarding welding. When the reflected wave of an ultrasonic wave sent out of a probe 4 applied to the surface of a material to be welded is received, the computer 10 calculates the position of the reflection point in the section perpendicular to the weld line from the angle theta of refraction of the probe 4, the acoustic velocity (v) in materials 1 and 2 to be welded, and the propagation time (t) of the ultrasonic wave in the materials to be welded, and stores the position as the defect data only when the position is within the effective flaw detection range. Noises can be removed from the bead surfaces of the weld reinforcement part of the fillet weld zone and butt weld zone with this constitution.
JP62231730A 1987-09-16 1987-09-16 Welding automatic ultrasonic flaw detection Expired - Fee Related JPH0726940B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62231730A JPH0726940B2 (en) 1987-09-16 1987-09-16 Welding automatic ultrasonic flaw detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62231730A JPH0726940B2 (en) 1987-09-16 1987-09-16 Welding automatic ultrasonic flaw detection

Publications (2)

Publication Number Publication Date
JPS6474443A true JPS6474443A (en) 1989-03-20
JPH0726940B2 JPH0726940B2 (en) 1995-03-29

Family

ID=16928131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62231730A Expired - Fee Related JPH0726940B2 (en) 1987-09-16 1987-09-16 Welding automatic ultrasonic flaw detection

Country Status (1)

Country Link
JP (1) JPH0726940B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003057214A (en) * 2001-08-10 2003-02-26 Nkk Corp Ultrasonic flaw detection method and apparatus for fillet welds
CN108445076A (en) * 2017-12-29 2018-08-24 渤海造船厂集团有限公司 One kind being based on T shape fillet weld transversal crack ultrasonic detection methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003057214A (en) * 2001-08-10 2003-02-26 Nkk Corp Ultrasonic flaw detection method and apparatus for fillet welds
CN108445076A (en) * 2017-12-29 2018-08-24 渤海造船厂集团有限公司 One kind being based on T shape fillet weld transversal crack ultrasonic detection methods

Also Published As

Publication number Publication date
JPH0726940B2 (en) 1995-03-29

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees