GB941771A - - Google Patents
Info
- Publication number
- GB941771A GB941771A GB941771DA GB941771A GB 941771 A GB941771 A GB 941771A GB 941771D A GB941771D A GB 941771DA GB 941771 A GB941771 A GB 941771A
- Authority
- GB
- United Kingdom
- Prior art keywords
- specimen
- block
- interface
- ultrasonic
- relevant
- 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.)
- Expired
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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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
941,771. Ultrasonic couplings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 19, 1960 [Feb. 20, 1959], No. 5997/59. Headings H4D and H4J. In a method of detecting discontinuities 9, 10 in a specimen 13 by observing their effect upon at least three ultrasonic beams 3a, 4a, 5a transmitted by piezo-electric elements 3, 4, 5, each beam 3a, 4a, 5a enters the specimen 13 through a single transmitting block 1 and each beam has inside the specimen 13 a " relevant zone " which overlaps the " relevant zone " of another of the beams. A " relevant zone " is a region of the beamed waves at the boundary of which the energy is not less than 10% of the energy at the point along the axis of the beam which is nearest to such boundary. The individual axes of the several " relevant zones " are mutually inclined and are oblique with respect to the interface 15 between the block 1 and specimen 13. Lubricating oil as coupling medium may be provided at the interface. The block 1 is a prism of polymethyl methacrylate resin and faces 6, 7, 8 and interface 15 are all perpendicular to one plane. The block 1 has serrations 2 for dissipating ultrasonic waves which are not transmitted to within the specimen 13.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB941771A true GB941771A (en) | 1900-01-01 |
Family
ID=1753926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB941771D Expired GB941771A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB941771A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2306592A1 (en) * | 1975-04-03 | 1976-10-29 | Us Energy | ULTRASONIC TRANSDUCER |
| US4028934A (en) * | 1975-11-04 | 1977-06-14 | Yeda Research & Development Co. Ltd. | Ultrasonic stereoscopic imaging device |
| GB2121964A (en) * | 1982-06-16 | 1984-01-04 | Secr Defence | Ultrasonic testing using mode conversion |
| GB2125251A (en) * | 1982-07-20 | 1984-02-29 | Atomic Energy Authority Uk | Ultrasonic inspection apparatus |
-
0
- GB GB941771D patent/GB941771A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2306592A1 (en) * | 1975-04-03 | 1976-10-29 | Us Energy | ULTRASONIC TRANSDUCER |
| US4028934A (en) * | 1975-11-04 | 1977-06-14 | Yeda Research & Development Co. Ltd. | Ultrasonic stereoscopic imaging device |
| GB2121964A (en) * | 1982-06-16 | 1984-01-04 | Secr Defence | Ultrasonic testing using mode conversion |
| GB2125251A (en) * | 1982-07-20 | 1984-02-29 | Atomic Energy Authority Uk | Ultrasonic inspection apparatus |
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