GB2021280A - Testing by holography - Google Patents
Testing by holographyInfo
- Publication number
- GB2021280A GB2021280A GB7913870A GB7913870A GB2021280A GB 2021280 A GB2021280 A GB 2021280A GB 7913870 A GB7913870 A GB 7913870A GB 7913870 A GB7913870 A GB 7913870A GB 2021280 A GB2021280 A GB 2021280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- testing
- holography
- hologrammetric
- hologram
- mirrors
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/021—Interferometers using holographic techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A method of testing a rigid cellular member (17) (such as a honeycomb sandwich structure used for absorbing noise in gas turbines) in which a hologrammetric representation (19) of a surface (20) of the member is made, and the member is vibrationally excited over a predetermined range of frequencies while the hologram (19) is being formed. The apparatus shown includes a laser (10), beam splitter (13), mirrors (12, 14, 15), lenses (16, 18), and a transducer (28) powered by a unit (29). <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7913870A GB2021280A (en) | 1978-05-20 | 1979-04-20 | Testing by holography |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2095078 | 1978-05-20 | ||
GB7913870A GB2021280A (en) | 1978-05-20 | 1979-04-20 | Testing by holography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2021280A true GB2021280A (en) | 1979-11-28 |
Family
ID=26255003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7913870A Withdrawn GB2021280A (en) | 1978-05-20 | 1979-04-20 | Testing by holography |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2021280A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2519144A1 (en) * | 1981-12-28 | 1983-07-01 | United Technologies Corp | HOLOGRAPHIC INSPECTION TECHNIQUE |
US9939391B1 (en) | 2016-12-15 | 2018-04-10 | Bell Helicopter Textron Inc. | Inspection method using a film overlay |
US10352906B2 (en) | 2016-12-15 | 2019-07-16 | Bell Helicopter Textron Inc. | Through-transmission ultrasonic testing apparatus |
-
1979
- 1979-04-20 GB GB7913870A patent/GB2021280A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2519144A1 (en) * | 1981-12-28 | 1983-07-01 | United Technologies Corp | HOLOGRAPHIC INSPECTION TECHNIQUE |
US9939391B1 (en) | 2016-12-15 | 2018-04-10 | Bell Helicopter Textron Inc. | Inspection method using a film overlay |
US10352906B2 (en) | 2016-12-15 | 2019-07-16 | Bell Helicopter Textron Inc. | Through-transmission ultrasonic testing apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |