FR2430613A1 - Procede et dispositif pour le controle ultrasonore de materiaux - Google Patents
Procede et dispositif pour le controle ultrasonore de materiauxInfo
- 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
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.
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)
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 |
-
1978
- 1978-07-04 FR FR7819931A patent/FR2430613A1/fr active Granted
Patent Citations (3)
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 |