Simple optical processing of moiré-grating photographs

@article{Cloud1980SimpleOP,
  title={Simple optical processing of moir{\'e}-grating photographs},
  author={Gary Cloud},
  journal={Experimental Mechanics},
  year={1980},
  volume={20},
  pages={265-272}
}
The three fundamental optical phenomena of diffraction, two-beam interference, and transformation by a lens form the basis of modern moiré strain-measurement techniques. The improved understanding of diffraction by superimposed gratings and optical spatial filtering leads to a general gain of freedom in designing moiré experiments. Benefits characteristic of refined but very simple optical-data-processing techniques include simpler apparatus, less-demanding procedure, possible large gains in… CONTINUE READING

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