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Träfflista för sökning "WFRF:(Molin K) srt2:(1990-1999)"

Sökning: WFRF:(Molin K) > (1990-1999)

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  • Mohan, N.K., et al. (författare)
  • Electronic shearography applied to static and vibrating objects
  • 1994
  • Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018 .- 1873-0310. ; 108:4-6, s. 197-202
  • Tidskriftsartikel (refereegranskat)abstract
    • An optical shearography configuration is presented which can be used for the measurement of slope change for static and vibrating objects in real time. Displacement and vibration amplitude fields are extracted from the shear data, which is an useful property in noise environments. In a Michelson interferometer set-up the two arms are provided with a phase-shift mirror and a bias modulation mirror to carry out the numerical evaluation of the measured deformation. Experimental results for an edge- clamped aluminium plate are presented
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  • Mohan, Nandigana K, et al. (författare)
  • Recent applications of TV holography and shearography
  • 1996
  • Ingår i: Laser Interferometry VIII. - Bellingham, Wash. : SPIE - International Society for Optical Engineering. - 9780819422491
  • Konferensbidrag (refereegranskat)abstract
    • TV holography is used to measure the components of the deformation vector, whereas TV shearography is used to obtain the derivatives of the displacement components. In this paper, we highlight a novel approach to split the CCD into two parts which enables to extract entirely different information from a single experimental configuration. A holo-shearography configuration provides simultaneous measurement of out-of-plane displacement and its slope change in real time. Similarly a holo-comparative configuration multiplexes an out-of-plane displacement configuration and a comparative interferometric configuration. Few experimental results using both these configurations are presented. In addition TV holography is implemented for vibration studies on an Indian classical musical instrument--Veena. The preliminary studies on a model veena are demonstrated
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  • Saldner, Henrik, et al. (författare)
  • Desensitized TV holography applied to static and vibrating objects for large deformation measurements
  • 1996
  • Ingår i: Laser Interferometry VIII. - Bellingham, Wash, : SPIE - International Society for Optical Engineering. - 9780819422484 ; , s. 342-349
  • Konferensbidrag (refereegranskat)abstract
    • This paper illustrates a real time desensitized outof-p1ane displacement configuration for the measurement of large deformations of a diffusely reflecting object. The optical configuration is implemented to study the behavior of engineering structures subjected to large static as well as vibration deflections. Phase stepping is provided in the optical set-up to obtain the deformation maps from the interferograms. For vibration analysis, the possibility of incorporating both phase stepping and bias vibration on a single mirror is also demonstrated. Theoretical analysis along with experimental results are presented
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  • Resultat 1-9 av 9

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