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Use of displacement data to calculate strain gauge response in non‐uniform strain fields
Author(s) -
Schajer Gary S.
Publication year - 1993
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.1475-1305.1993.tb00820.x
Subject(s) - strain gauge , displacement (psychology) , strain (injury) , gauge (firearms) , field (mathematics) , displacement field , grid , grid method multiplication , mathematical analysis , mathematics , geometry , materials science , structural engineering , engineering , finite element method , medicine , psychology , pure mathematics , metallurgy , psychotherapist
A simple and effective method is described for calculating the strain indicated by a practical strain gauge mounted in a nonuniform strain field. The method uses integration or summation of the displacement field along the perimeter of the strain gauge area. This procedure gives results which are equivalent to those obtained by much lengthier calculations involving double integration of the strain field within the strain gauge area. The displacement summation method can easily take into account significant strain gauge design details such as number, length, width and spacing of the grid lines. The method also demonstrates that a strain gauge can be used as a displacement sensor as well as a strain sensor.