Portable holographic interferometric device for aircraft inspecting

George Eugene Dovgalenko; Yuri I. Onischenko; Irina I. Loutchkina; Gregory J. Salamo

doi:10.1117/12.212656

23 June 1995 Portable holographic interferometric device for aircraft inspecting

George Eugene Dovgalenko, Yuri I. Onischenko, Irina I. Loutchkina, Gregory J. Salamo

Proceedings Volume 2545, Interferometry VII: Applications; (1995) https://doi.org/10.1117/12.212656
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

A new single-beam technique for a continuous reconstruction of volume holograms in photorefractive crystals of symmetry 23 is presented. The doped crystal Bi₁₂TiO₂₀ (Fe,P) possessing diffraction efficiency above 70% is used for real-time holographic interferometry. The major advantage of this technique is an automatic self-adjustment of diffraction in volume holograms, continuous reconstruction of volume holograms, high diffraction efficiency without application of external electric field, high resolution (more than 3000 lines/mm), high vibroprotection stability, low cost using of He-Ne or diode lasers, and portability (single-beam device). A 1 mm crack was detected at a depth of 1.5 mm in airplane wings near a rivet zone using protable adaptive holographic interferometer.

Citation Download Citation

George Eugene Dovgalenko, Yuri I. Onischenko, Irina I. Loutchkina, and Gregory J. Salamo "Portable holographic interferometric device for aircraft inspecting", Proc. SPIE 2545, Interferometry VII: Applications, (23 June 1995); https://doi.org/10.1117/12.212656

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