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Strain gauge measurements within the school laboratory practice
Author(s) -
Ficker T.
Publication year - 1992
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.1475-1305.1992.tb00791.x
Subject(s) - strain gauge , strain (injury) , infinitesimal strain theory , modulus , gauge (firearms) , tensor (intrinsic definition) , field (mathematics) , poisson's ratio , poisson distribution , gauge theory , linearity , mathematical analysis , structural engineering , mathematics , physics , materials science , geometry , composite material , engineering , finite element method , mathematical physics , quantum mechanics , statistics , pure mathematics , medicine , metallurgy
A simple technical device has been proposed suitable for exercising strain gauge measurements in introductory courses in tensometry. Its conception has followed from a theoretical strain analysis of the circular thin steel plate loaded by a concentrated central force. The analysis has taken into account a non linearity of the studied strain field and has used a strain tensor for original expression of Poisson's ratio and Young's modulus of the material of the plate. The derivation of analytic expressions of both these constants enabled one to estimate their values by means of the strain gauge measurements. In this way the proposed device demonstrates further application possibilities of the strain gauge method.