NO842934L - PROCEDURE FOR THE DETECTION OF ERRORS, PARTICULARLY INTERNAL, LIKE CRACKS IN WELDED SKETCHES - Google Patents

PROCEDURE FOR THE DETECTION OF ERRORS, PARTICULARLY INTERNAL, LIKE CRACKS IN WELDED SKETCHES

Info

Publication number
NO842934L
NO842934L NO842934A NO842934A NO842934L NO 842934 L NO842934 L NO 842934L NO 842934 A NO842934 A NO 842934A NO 842934 A NO842934 A NO 842934A NO 842934 L NO842934 L NO 842934L
Authority
NO
Norway
Prior art keywords
interface
echo
echoes
echo return
detection
Prior art date
Application number
NO842934A
Other languages
Norwegian (no)
Other versions
NO162934C (en
NO162934B (en
Inventor
Jean-Pierre Georges Capdevelle
Original Assignee
Gaz De France
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 Gaz De France filed Critical Gaz De France
Publication of NO842934L publication Critical patent/NO842934L/en
Publication of NO162934B publication Critical patent/NO162934B/en
Publication of NO162934C publication Critical patent/NO162934C/en

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
    • G01N29/4436—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with a reference signal
    • 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
    • G01N29/11—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
    • 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
    • G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
    • 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
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/38—Detecting the response signal, e.g. electronic circuits specially adapted therefor by time filtering, e.g. using time gates
    • 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

  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Arc Welding Control (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1. Method of detecting defaults on both sides of each parent metal/filler metal interface formed by the welding of a first metallic piece (1) on another metallic piece (2), in particular of T-shaped welded joints made of steel with an austenitic structure, comprising the emission of longitudinal ultrasonic waves (40) on the wall or surface of one of the said pieces, towards the interface (4, 6) to be checked, the detection of the echo return and the use of samples comprising discontinuities at predetermined locations for the evaluation of the echoes, characterized in that the echo return is detected substantially at the point of emission (PE) of the longitudinal ultrasonic waves (40), an echo return is compared with a pre-established reference echo with the aid of a standard joint (17, 18, 20) corresponding to the joint to be checked and comprising predetermined standard holes (22, 24, 26, 28, 30) near the said interface and useful for the production of reference echoes different from the echoes produced by the interface and in that the echo return is detected only during the lapse of time determined by the reference echo.
NO842934A 1983-07-19 1984-07-18 PROCEDURE FOR ERROR DETECTION IN WELDING RELATIONS. NO162934C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8311911A FR2549607B1 (en) 1983-07-19 1983-07-19 METHOD FOR DETECTING DEFECTS, ESPECIALLY INTERNAL, SUCH AS CRACKS IN WELDED JOINTS

Publications (3)

Publication Number Publication Date
NO842934L true NO842934L (en) 1985-01-21
NO162934B NO162934B (en) 1989-11-27
NO162934C NO162934C (en) 1990-03-07

Family

ID=9290926

Family Applications (1)

Application Number Title Priority Date Filing Date
NO842934A NO162934C (en) 1983-07-19 1984-07-18 PROCEDURE FOR ERROR DETECTION IN WELDING RELATIONS.

Country Status (6)

Country Link
EP (1) EP0132187B1 (en)
AT (1) ATE37094T1 (en)
CA (1) CA1232671A (en)
DE (1) DE3473928D1 (en)
FR (1) FR2549607B1 (en)
NO (1) NO162934C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1583634B1 (en) * 2002-12-18 2006-08-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method of evaluating a weld joint formed during a welding process using longitudinal and transversal ultrasonic waves
CN101699279B (en) * 2009-10-27 2011-08-03 中国长江航运集团青山船厂 Ultrasonic defect detection method for T-shaped joint fillet weld of dual-phase steel and carbon steel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664763A (en) * 1949-02-17 1952-01-09 Nat Res Dev Method of and apparatus for examining materials by ultrasonic irradiation
DE971993C (en) * 1955-01-04 1959-05-06 Siemens Ag Transducer for oblique irradiation of ultrasonic pulses in test bodies
DE1816255C3 (en) * 1968-12-21 1973-11-22 Hoesch Werke Ag, 4600 Dortmund Process for the non-destructive testing of weld seams using ultrasonic energy
FR2093406A5 (en) * 1970-06-12 1972-01-28 Commissariat Energie Atomique
US3895685A (en) * 1971-04-19 1975-07-22 Combustion Eng Method and apparatus for ultrasonic inspection of weldments
IT1096070B (en) * 1977-05-16 1985-08-17 Mannesmann Ag PROCEDURE FOR THE DIFFERENTIATION OF US SIGNALS (ULTRASOUND) WHOSE REFLECTION HAS DIFFERENT CAUSES
AT362166B (en) * 1979-01-08 1981-04-27 Voest Alpine Ag WELDING AUSTENITIC STEEL
JPS56143951A (en) * 1980-04-10 1981-11-10 Nisshin Steel Co Ltd Ultrasonic flaw detection for austenite alloy steel welded steel pipe

Also Published As

Publication number Publication date
DE3473928D1 (en) 1988-10-13
FR2549607A1 (en) 1985-01-25
FR2549607B1 (en) 1986-01-31
EP0132187A1 (en) 1985-01-23
NO162934C (en) 1990-03-07
EP0132187B1 (en) 1988-09-07
ATE37094T1 (en) 1988-09-15
CA1232671A (en) 1988-02-09
NO162934B (en) 1989-11-27

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