FR2354825A1 - PROCESS FOR GENERATION AND DETECTION OF ULTRASONIC WAVES IN A SOLID BODY CONDUCTING ELECTRICITY - Google Patents

PROCESS FOR GENERATION AND DETECTION OF ULTRASONIC WAVES IN A SOLID BODY CONDUCTING ELECTRICITY

Info

Publication number
FR2354825A1
FR2354825A1 FR7718442A FR7718442A FR2354825A1 FR 2354825 A1 FR2354825 A1 FR 2354825A1 FR 7718442 A FR7718442 A FR 7718442A FR 7718442 A FR7718442 A FR 7718442A FR 2354825 A1 FR2354825 A1 FR 2354825A1
Authority
FR
France
Prior art keywords
conductors
ultrasonic waves
solid body
generation
detection
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
FR7718442A
Other languages
French (fr)
Other versions
FR2354825B1 (en
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.)
TI Group Services Ltd
Original Assignee
TI Group Services 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 TI Group Services Ltd filed Critical TI Group Services Ltd
Publication of FR2354825A1 publication Critical patent/FR2354825A1/en
Application granted granted Critical
Publication of FR2354825B1 publication Critical patent/FR2354825B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • 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
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • 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
    • G01N2291/042—Wave modes
    • G01N2291/0421—Longitudinal waves

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un procédé de génération et de détection d'ondes ultrasonores dans un corps solide conducteur de l'électricité. Ledit procédé consiste à utiliser un transducteur comprenant une grille de conducteurs électriques parallèles se trouvant dans un même plan et placé à proximité de la surface du corps parallèlement à cette dernière, un signal électrique alternatif etant appliqué à tous les conducteurs de façon que le courant qui y circule engendre des ondes ultra-sonores dans le corps. La fréquence du courant alternatif est en rapport avec l'écartement des conducteurs et les ondes engendrées par le courant circulant dans chaque conducteur réagit avec celles engendrées par les conducteurs adjacents pour produire un faisceau d'ultra-sons orientés dans une direction qui n'est pas perpendiculaire à la surface du corps Application au contrôle de matériaux solides tels que des métaux pour détecter des défauts ou pailles.The invention relates to a method for generating and detecting ultrasonic waves in an electrically conductive solid body. Said method consists in using a transducer comprising a grid of parallel electrical conductors lying in the same plane and placed close to the surface of the body parallel to the latter, an alternating electrical signal being applied to all the conductors so that the current which circulating there generates ultra-sound waves in the body. The frequency of the alternating current is related to the spacing of the conductors and the waves generated by the current flowing in each conductor react with those generated by the adjacent conductors to produce a beam of ultrasound oriented in a direction which is not not perpendicular to the surface of the body Application to the control of solid materials such as metals to detect defects or flaws.

FR7718442A 1976-06-17 1977-06-16 PROCESS FOR GENERATION AND DETECTION OF ULTRASONIC WAVES IN A SOLID BODY CONDUCTING ELECTRICITY Granted FR2354825A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2501576A GB1565063A (en) 1976-06-17 1976-06-17 Ultrasound

Publications (2)

Publication Number Publication Date
FR2354825A1 true FR2354825A1 (en) 1978-01-13
FR2354825B1 FR2354825B1 (en) 1983-11-25

Family

ID=10220841

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7718442A Granted FR2354825A1 (en) 1976-06-17 1977-06-16 PROCESS FOR GENERATION AND DETECTION OF ULTRASONIC WAVES IN A SOLID BODY CONDUCTING ELECTRICITY

Country Status (9)

Country Link
BE (1) BE855622A (en)
DE (1) DE2726827A1 (en)
DK (1) DK265477A (en)
FR (1) FR2354825A1 (en)
GB (1) GB1565063A (en)
IE (1) IE45001B1 (en)
IT (1) IT1078302B (en)
LU (1) LU77567A1 (en)
NL (1) NL7706731A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000099A1 (en) * 1978-06-20 1980-01-24 Sumitomo Metal Ind Method of non-contact supersonic flaw detection and apparatus therefor
EP0024707A2 (en) * 1979-08-24 1981-03-11 Hitachi, Ltd. Electromagnetic ultrasonic apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331727C2 (en) * 1983-09-02 1995-06-08 Betr Forsch Inst Angew Forsch Electromagnetic transducer
JP2727298B2 (en) * 1993-07-12 1998-03-11 ザ・バブコック・アンド・ウイルコックス・カンパニー Method for detecting corrosion fatigue cracks in boiler tubes with membrane
DE19628028A1 (en) * 1996-07-11 1998-01-22 Siemens Ag Test device and method for non-destructive material testing
DE19637424A1 (en) * 1996-09-13 1998-03-26 Siemens Ag Process for generating horizontally polarized transverse ultrasonic waves for non-destructive material testing and testing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918295A (en) * 1972-06-05 1975-11-11 Raimar Pohlman Method of nondestructively testing materials by ultrasound

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918295A (en) * 1972-06-05 1975-11-11 Raimar Pohlman Method of nondestructively testing materials by ultrasound

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000099A1 (en) * 1978-06-20 1980-01-24 Sumitomo Metal Ind Method of non-contact supersonic flaw detection and apparatus therefor
EP0019002A4 (en) * 1978-06-20 1980-10-09 Sumitomo Metal Ind Method and apparatus for non-contact ultrasonic flaw detection.
EP0019002A1 (en) * 1978-06-20 1980-11-26 Sumitomo Metal Industries, Ltd. Method and apparatus for non-contact ultrasonic flaw detection
EP0024707A2 (en) * 1979-08-24 1981-03-11 Hitachi, Ltd. Electromagnetic ultrasonic apparatus
EP0024707A3 (en) * 1979-08-24 1981-04-01 Hitachi, Ltd. Electromagnetic ultrasonic apparatus

Also Published As

Publication number Publication date
IT1078302B (en) 1985-05-08
GB1565063A (en) 1980-04-16
IE45001B1 (en) 1982-06-02
FR2354825B1 (en) 1983-11-25
NL7706731A (en) 1977-12-20
LU77567A1 (en) 1977-09-26
BE855622A (en) 1977-10-03
DE2726827A1 (en) 1978-02-09
IE45001L (en) 1977-12-17
DK265477A (en) 1977-12-18

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