FR2398303A1 - Dispositif de detection d'imperfections - Google Patents
Dispositif de detection d'imperfectionsInfo
- Publication number
- FR2398303A1 FR2398303A1 FR7821275A FR7821275A FR2398303A1 FR 2398303 A1 FR2398303 A1 FR 2398303A1 FR 7821275 A FR7821275 A FR 7821275A FR 7821275 A FR7821275 A FR 7821275A FR 2398303 A1 FR2398303 A1 FR 2398303A1
- Authority
- FR
- France
- Prior art keywords
- resonator
- detected body
- elastic member
- move
- imperfections
- 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
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
-
- 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
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Protection Of Generators And Motors (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
L'invention concerne un dispositif de détection d'imperfections. Selon l'invention, il comprend un corps détecté 38, un résonateur 10 résonnant à une fréquence de vibrations prédéterminée du corps détecté, un élément de détection porté par le résonateur et dont le mouvement est contrôlé, et un organe élastique 16 tendant à déplacer l'élément de détection dans une direction prédéterminée, la résonance du résonateur coopérant avec la résilience de l'organe élastique pour déplacer l'élément de détection dans la direction prédéterminé et détecter ainsi une imperfection dans le corps détecté. L'invention s'applique notamment à la détection des imperfections sur des appareils électriques de grandes dimensions, des sous-stations de transformateurs, diverses installations, des machines-outils, des navires, des avions et autres.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52086429A JPS5913686B2 (ja) | 1977-07-18 | 1977-07-18 | 故障検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2398303A1 true FR2398303A1 (fr) | 1979-02-16 |
FR2398303B1 FR2398303B1 (fr) | 1981-11-20 |
Family
ID=13886650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7821275A Granted FR2398303A1 (fr) | 1977-07-18 | 1978-07-18 | Dispositif de detection d'imperfections |
Country Status (6)
Country | Link |
---|---|
US (1) | US4195528A (fr) |
JP (1) | JPS5913686B2 (fr) |
CA (1) | CA1126387A (fr) |
CH (1) | CH635933A5 (fr) |
DE (1) | DE2831544C3 (fr) |
FR (1) | FR2398303A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4975855A (en) * | 1989-03-14 | 1990-12-04 | Rem Technologies, Inc. | Shaft crack detection method |
US5068800A (en) * | 1989-03-14 | 1991-11-26 | Rem Technologies, Inc. | Crack detection method for shaft at rest |
US5159563A (en) * | 1989-03-14 | 1992-10-27 | Rem Technologies, Inc. | Crack detection method for operating shaft |
US5078078A (en) * | 1990-12-21 | 1992-01-07 | Powertech Labs Inc. | Transformer internal fault warning indicator |
CN115585879B (zh) * | 2022-10-10 | 2023-08-18 | 国网山东省电力公司高密市供电公司 | 一种监测电力设备振动幅度的声波检测装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR570631A (fr) * | 1923-09-07 | 1924-05-05 | Perfectionnements aux vibromètres | |
FR1490660A (fr) * | 1966-06-21 | 1967-08-04 | Terrin Tech Ind | Appareil détecteur de vibrations et de chocs |
US3672325A (en) * | 1970-06-12 | 1972-06-27 | Robert S Harrah | Transducer with visible output |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB767670A (en) * | 1954-11-26 | 1957-02-06 | Rolls Royce | Device for defective vibration |
US2974521A (en) * | 1956-06-27 | 1961-03-14 | Vincent J Getzendanner | Vibration measuring apparatus |
US2932189A (en) * | 1956-10-12 | 1960-04-12 | Alcar Instr Inc | Ultrasonic flaw detector |
US3698351A (en) * | 1969-10-27 | 1972-10-17 | Robert S Harrah | Vibration detector |
US3705516A (en) * | 1971-09-30 | 1972-12-12 | Northrop Corp | Method and apparatus for testing the condition of a machine |
JPS4975182A (fr) * | 1972-11-20 | 1974-07-19 | ||
US3878858A (en) * | 1972-11-30 | 1975-04-22 | Masafusa Yamada | Safety device automatically actuated by vibrations |
GB1471302A (en) * | 1974-05-07 | 1977-04-21 | Birchall D | Apparatus for the detection of vibration in rotating machinery |
US4058134A (en) * | 1974-12-16 | 1977-11-15 | Kabushiki Kaisha Shinko Seisakusho | Interceptor actuated by seismic vibrations |
-
1977
- 1977-07-18 JP JP52086429A patent/JPS5913686B2/ja not_active Expired
-
1978
- 1978-07-14 US US05/924,829 patent/US4195528A/en not_active Expired - Lifetime
- 1978-07-17 CA CA307,540A patent/CA1126387A/fr not_active Expired
- 1978-07-18 FR FR7821275A patent/FR2398303A1/fr active Granted
- 1978-07-18 DE DE2831544A patent/DE2831544C3/de not_active Expired
- 1978-07-18 CH CH773378A patent/CH635933A5/de not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR570631A (fr) * | 1923-09-07 | 1924-05-05 | Perfectionnements aux vibromètres | |
FR1490660A (fr) * | 1966-06-21 | 1967-08-04 | Terrin Tech Ind | Appareil détecteur de vibrations et de chocs |
US3672325A (en) * | 1970-06-12 | 1972-06-27 | Robert S Harrah | Transducer with visible output |
Also Published As
Publication number | Publication date |
---|---|
DE2831544A1 (de) | 1979-02-01 |
CA1126387A (fr) | 1982-06-22 |
US4195528A (en) | 1980-04-01 |
DE2831544B2 (de) | 1980-03-20 |
DE2831544C3 (de) | 1980-11-20 |
CH635933A5 (de) | 1983-04-29 |
FR2398303B1 (fr) | 1981-11-20 |
JPS5421380A (en) | 1979-02-17 |
JPS5913686B2 (ja) | 1984-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |