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MOIRÉ STRAIN GAUGES
Author(s) -
KOSTAK BLAHOSLAV,
POPP KAREL
Publication year - 1966
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1966.tb00490.x
Subject(s) - moiré pattern , superposition principle , strain gauge , compensation (psychology) , optics , spiral (railway) , grid , structural engineering , sign (mathematics) , materials science , engineering , physics , geometry , mathematics , mechanical engineering , mathematical analysis , psychology , psychoanalysis
General features of the use of spiral grids in the Moiré technique are analysed theoretically. Equations of various types of Moiré fringe patterns are presented, which relate to superposition of circular, spiral, and parallel‐line grids. Goniometric compensation is proposed on Moiré fringes. The question of differentiation of the sign of strain is solved. Comparison is made with pure circular‐grid systems. The principles developed are aimed at strain measurements with the use of Moiré gauges.