General interpretation of moiré patterns in strain analysis

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Abstract
A simple theoretical treatment of moiré patterns is given with the use of relations between diagonal systems that have the physical meaning of contour lines of the functions in question. The general approach and knowledge of diagonal-system properties can simplify various problems of strain measurement by the moiré method, and this is demonstrated by the compensation of a moiré pattern and by the method of two-dimensional strain measurement.

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