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Experimental approach toward holographic interferometric fringe interpretation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Liu, H. K. |
| Copyright Year | 1974 |
| Description | Current literature concerning the measurement of small displacements by the laser holographic technique was reviewed. It was found that existing theories are extremely difficult, if not impossible, to apply to any realistic nondestructive testing conditions in which the geometries of the objects are complex and the three-dimensional displacements are irregular. An experimental approach was adopted for interpreting correlation between real time holographic fringe patterns and small displacements. Preliminary results show that the present method is feasible for the quantitative interpretation of the fringes as well as the calibration of the mobile HNDT system. |
| File Size | 1698112 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750011560 |
| Archival Resource Key | ark:/13960/t1ng9dv2b |
| Language | English |
| Publisher Date | 1974-07-01 |
| Access Restriction | Open |
| Subject Keyword | Diffraction Patterns Nondestructive Tests Composite Materials Lasers Epoxy Resins Displacement Measurement Holography Ceramics Glass Fibers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
