FR2430613A1 - Procede et dispositif pour le controle ultrasonore de materiaux - Google Patents

Procede et dispositif pour le controle ultrasonore de materiaux

Info

Publication number
FR2430613A1
FR2430613A1 FR7819931A FR7819931A FR2430613A1 FR 2430613 A1 FR2430613 A1 FR 2430613A1 FR 7819931 A FR7819931 A FR 7819931A FR 7819931 A FR7819931 A FR 7819931A FR 2430613 A1 FR2430613 A1 FR 2430613A1
Authority
FR
France
Prior art keywords
amplitudes
level
materials
ultrasonic testing
specified signal
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
FR7819931A
Other languages
English (en)
Other versions
FR2430613B1 (fr
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.)
VNII PO RAZRABOTKE NERAZRUSCHA
Original Assignee
VNII PO RAZRABOTKE NERAZRUSCHA
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 VNII PO RAZRABOTKE NERAZRUSCHA filed Critical VNII PO RAZRABOTKE NERAZRUSCHA
Priority to FR7819931A priority Critical patent/FR2430613A1/fr
Publication of FR2430613A1 publication Critical patent/FR2430613A1/fr
Application granted granted Critical
Publication of FR2430613B1 publication Critical patent/FR2430613B1/fr
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
    • G01N29/36—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

Landscapes

  • 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

Procédé et dispositif pour le contrôle ultrasonore des matériaux. Après la réception et le traitement des échos ultrasonores du materiau à contrôler 4 on réalise la séparation signal-bruit au niveau adopté par une sélection temporelle desdits signaux dans les intervalles de temps où les amplitudes signaux dépassent le niveau adopté. L'appareil comporte un émetteur ultrasonore 1, un transducteur , un montage sans réjection du bruit 7, un séparateur signal-bruit 8 et un enregistreur de signaux 9. Applications : contrôle ultrasonore de matériaux dans des installations de contrôle ou de fabrication.
FR7819931A 1978-07-04 1978-07-04 Procede et dispositif pour le controle ultrasonore de materiaux Granted FR2430613A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7819931A FR2430613A1 (fr) 1978-07-04 1978-07-04 Procede et dispositif pour le controle ultrasonore de materiaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7819931A FR2430613A1 (fr) 1978-07-04 1978-07-04 Procede et dispositif pour le controle ultrasonore de materiaux

Publications (2)

Publication Number Publication Date
FR2430613A1 true FR2430613A1 (fr) 1980-02-01
FR2430613B1 FR2430613B1 (fr) 1981-02-06

Family

ID=9210313

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819931A Granted FR2430613A1 (fr) 1978-07-04 1978-07-04 Procede et dispositif pour le controle ultrasonore de materiaux

Country Status (1)

Country Link
FR (1) FR2430613A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690156A (en) * 1971-05-27 1972-09-12 Automation Ind Inc Noise gate for ultrasonic test apparatus
US3805597A (en) * 1971-09-14 1974-04-23 Tokyo Keiki Kk Ultrasonic flaw detector
US3872715A (en) * 1974-02-13 1975-03-25 Krautkramer Branson Ultrasonic pulse-echo gate circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690156A (en) * 1971-05-27 1972-09-12 Automation Ind Inc Noise gate for ultrasonic test apparatus
US3805597A (en) * 1971-09-14 1974-04-23 Tokyo Keiki Kk Ultrasonic flaw detector
US3872715A (en) * 1974-02-13 1975-03-25 Krautkramer Branson Ultrasonic pulse-echo gate circuit

Also Published As

Publication number Publication date
FR2430613B1 (fr) 1981-02-06

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Legal Events

Date Code Title Description
ST Notification of lapse