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Laser speckle technique for burner liner strain measurements
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stetson, K. A. |
| Copyright Year | 1982 |
| Description | Thermal and mechanical strains were measured on samples of a common material used in jet engine burner liners, which were heated from room temperature to 870 C and cooled back to 220 C, in a laboratory furnance. The physical geometry of the sample surface was recorded at selected temperatures by a set of 12 single exposure speckle-grams. Sequential pairs of specklegrams were compared in a heterodyne interferometer which give high precision measurement of differential displacements. Good speckle correlation between the first and last specklegrams is noted which allows a check on accumulate errors. |
| File Size | 197315 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850002652 |
| Archival Resource Key | ark:/13960/t08w87n6k |
| Language | English |
| Publisher Date | 1982-10-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Laser Outputs Speckle Patterns Gas Turbine Engines Linings Mechanical Properties Strain Measurement Burners Thermodynamic Properties Surface Roughness Effects Jet Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
