PANORAMIC INTERFEROMETRY OF CYLINDRICAL SHELLS |
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| E. A. Krasnopevtsev, L. A. Borynyak |
- Abstract:
- A panoramic holographic interferometer with the maximum angle aperture is proposed. The main element is a conic mirror with an apex angle 90° and coaxial with the cylindrical object. Near the object a cylindrical photoemulsion film is placed. Peculiarities of image and of interference picture restored by an unrolled twoexposured hologram are examined. Measurement methods of all displacement vector components of the external and internal surface points of the optically transparent shell are expounded. Sensitivity is equal in all surface points. Tomographical measurement methods of relative radial deformation of the shell elements are elaborated. The unrolled hologram creates a wall shell image like a flat layer. Radon transformation of a flat layer and reconstruction of a low frequency deformed state on the basis of a 2D summary images are considered. Unrolled hologram allows to determine an object-deformed state in separate points and also as a whole and expose anomalous deformation zones.
- Keywords:
- interferometry, panoramic, holographic
- Download:
- IMEKO-WC-2000-MNT-P485.pdf
- DOI:
- -
- Event details
- Event name:
- XVI IMEKO World Congress
- Title:
Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future
- Place:
- Vienna, AUSTRIA
- Time:
- 25 September 2000 - 28 September 2000