Abstract
Multimode-fiber optics are used to holographically record surface deformation in remote areas of a structure Dispiacement patterns agree well with theory, indicating that the proposed technique is feasible. Inherent difficulties encountered with multimode fibers are discussed and guidlines are established for further studies. designed to improve holographic displacement recording using monodode fibers.
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Abbreviations
- a :
-
fiber diameter
- d:
-
displacement vector
- d 1 :
-
inner diameter of pipe
- \(\hat e_i \) :
-
unit vector
- n :
-
fringe-order number
- w :
-
scalar-displacement component
- D :
-
distance from fiber exit
- L :
-
length of pipe
- M t :
-
applied forque
- R :
-
radius of plate
- X, Y, Z :
-
axes system
- λ:
-
wavelength
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Gilbert, J.A., Herrick, J.W. Holographic displacement analysis with multimode-fiber optics. Experimental Mechanics 21, 315–320 (1981). https://doi.org/10.1007/BF02325772
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DOI: https://doi.org/10.1007/BF02325772