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http://cio.repositorioinstitucional.mx/jspui/handle/1002/369| 3D DIGITAL HOLOGRAPHIC INTERFEROMETRY AND SPECTRAL OPTICAL COHERENCE TOMOGRAPHY FOR THE MEASUREMENT OF STRAIN IN METALLIC OBJECTS AND PHASE IN BIOLOGICAL TISSUES | |
| Manuel H. De la Torre Ibarra | |
| Fernando Mendoza_Santoyo | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| DIGITAL HOLOGRAPHIC INTERFEROMETRY (DHI), SPECTRAL OPTICAL COHERENCE TOMOGRAPHY (SOCT), TOMOGRAPHIC TECHNIQUES, ILLUMINATION, PHASE DETECTION | |
| "The present work is devoted to two optical non destructive tests as digital holographic interferometry and spectral optical coherence tomography. Both techniques were successfully applied to detect strain and phase in metallic and organic samples respectively. The mainly differences between these two techniques is their penetration factor. Three-dimensional digital holography was applied for the detection of surface displacements in metallic objects. Modeling displacements with this technique make it possible to generate a surface strain map over the whole field of view of the system. In this particular case, the optical set up uses illuminating beams to irradiate the object from three different directions resulting that all three x, y and z displacement components can be independently analyzed and used to find the strain gradients on the surface of the sample. Furthermore, separation of the surface strain gradients as function of x and y was achieved with the same optical system. Results show the conversion of the complete surface displacement field into a surface strain field with no extra hardware. The second non destructive test is the spectral optical coherence tomography used to measure subsurface optical phase within a transparent (pig cornea) media. The system provides displacement maps within a 2-D slice extending into the sample. The proof of principle of the method was done with low cost components in a system with no moving parts set in a novel data processing for this kind of information. The method was used to explore an organic sample in order to get optical phase information within the sample. Results showed a system high sensitivity and its viability for sub-surface inspection." | |
| 2006-04 | |
| Tesis de doctorado | |
| Inglés | |
| León, Guanajuato | |
| Público en general | |
| De la Torre Ibarra, (2006). "3D digital holographic interferometry and spectral optical coherence tomography for the measurement of strain in metallic objects and phase in biological tissues". Tesis de Doctorado en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. 86 pp. | |
| ÓPTICA | |
| Aparece en las colecciones: | DOCTORADO EN CIENCIAS (ÓPTICA) |
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| 11390.pdf | 1.73 MB | Adobe PDF | Visualizar/Abrir |