GB615684A - Improvements in or relating to electro-acoustic transducers - Google Patents
Improvements in or relating to electro-acoustic transducersInfo
- Publication number
- GB615684A GB615684A GB19099/46A GB1909946A GB615684A GB 615684 A GB615684 A GB 615684A GB 19099/46 A GB19099/46 A GB 19099/46A GB 1909946 A GB1909946 A GB 1909946A GB 615684 A GB615684 A GB 615684A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- crystal
- container
- waves
- june
- 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
- G01N29/24—Probes
- G01N29/2487—Directing probes, e.g. angle probes
-
- 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
-
- 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
-
- 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
- G01N2291/0422—Shear waves, transverse waves, horizontally polarised waves
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
615,684. Supersonic inspection apparatus. SPERRY PRODUCTS, Inc. June 26, 1946, No. 19099. Convention date, June 28, 1945. [Class 118 (ii)] [Also in Group XXXIX] Apparatus for inspecting the interior of a solid body comprises means for placing a liquid in contact with a surface of the body, means for transmitting a supersonic wave through the liquid at an angle of incidence with said surface sufficiently different from zero to avoid standing waves, and means for detecting waves emerging from said surface into the liquid. As shown, an X-cut crystal 10 secured to an insulating block 12 is inclined to the face 16 of the body 15 to be tested, and separated therefrom, the block being pivoted on a pin 20 and pulled by a spring 22 against an adjusting-screw 26. The crystal is mounted near the open end of a container 25 in a chamber defined by the body 15 and a' partition 23, and this chamber is filled with mercury or other liquid by means, for example, of a collapsable reservoir 35 attached to the container. By adjusting the inclination of the crystal and moving the container, inspection of parts of inaccessible bodies is facilitated. If desired, the inclination may be such that the longitudinal waves 41 do not penetrate the body and all of the refracted energy lies in the shear waves 42. The front and rear faces of the crystal may be curved to provide greater sensitivity in particular areas within the body 15. In a modification, two transducers, an emitter and a receiver are arranged in a tank filled with liquid through which a solid body to be tested is passed. The body is guided by rollers, and the crystals are mounted one at each side of the tank. Specification 571,817 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US615684XA | 1945-06-28 | 1945-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB615684A true GB615684A (en) | 1949-01-10 |
Family
ID=22036617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19099/46A Expired GB615684A (en) | 1945-06-28 | 1946-06-26 | Improvements in or relating to electro-acoustic transducers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB615684A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2587414A (en) * | 1949-08-13 | 1952-02-26 | Gen Electric | Ultrasonic materials testing |
| US2725491A (en) * | 1951-05-28 | 1955-11-29 | United States Steel Corp | Adapter for adjustably mounting angle search unit on contact shoe for ultrasonic shear-wave testing of tubular articles |
| US2795133A (en) * | 1953-03-06 | 1957-06-11 | Acec | Apparatus for testing workpieces with ultrasonic waves |
| US3233449A (en) * | 1960-10-06 | 1966-02-08 | Republic Steel Corp | Method and apparatus for ultrasonic testing of pipe |
| US3302453A (en) * | 1963-04-15 | 1967-02-07 | American Mach & Foundry | Method of inspection utilizing ultrasonic energy |
| FR2377134A1 (en) * | 1977-01-06 | 1978-08-04 | Stanford Research Inst | ULTRASONIC EXAMINATION TRANSDUCER |
| WO2008077566A3 (en) * | 2006-12-22 | 2008-09-12 | Giesecke & Devrient Gmbh | Device for outputting and/or receiving ultrasound and ultrasound sensor for inspecting a valuable document |
-
1946
- 1946-06-26 GB GB19099/46A patent/GB615684A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2587414A (en) * | 1949-08-13 | 1952-02-26 | Gen Electric | Ultrasonic materials testing |
| US2725491A (en) * | 1951-05-28 | 1955-11-29 | United States Steel Corp | Adapter for adjustably mounting angle search unit on contact shoe for ultrasonic shear-wave testing of tubular articles |
| US2795133A (en) * | 1953-03-06 | 1957-06-11 | Acec | Apparatus for testing workpieces with ultrasonic waves |
| US3233449A (en) * | 1960-10-06 | 1966-02-08 | Republic Steel Corp | Method and apparatus for ultrasonic testing of pipe |
| US3302453A (en) * | 1963-04-15 | 1967-02-07 | American Mach & Foundry | Method of inspection utilizing ultrasonic energy |
| FR2377134A1 (en) * | 1977-01-06 | 1978-08-04 | Stanford Research Inst | ULTRASONIC EXAMINATION TRANSDUCER |
| WO2008077566A3 (en) * | 2006-12-22 | 2008-09-12 | Giesecke & Devrient Gmbh | Device for outputting and/or receiving ultrasound and ultrasound sensor for inspecting a valuable document |
| EP2477162A1 (en) * | 2006-12-22 | 2012-07-18 | Giesecke & Devrient GmbH | Ultrasound sensor for examining a valuable document |
| US8230742B2 (en) | 2006-12-22 | 2012-07-31 | Giesecke & Devrient Gmbh | Device for outputting and/or receiving ultrasound and ultrasound sensor for inspecting a valuable document |
| US9194845B2 (en) | 2006-12-22 | 2015-11-24 | Giesecke & Devrient Gmbh | Device for outputting and/or receiving ultrasound and ultrasound sensor for inspecting a valuable document |
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