BSC4 Operating Manual
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Document Number 15-183 Rev B Page 67 of 74
8. Parameters of the material, where the rosette is applied to
8.1. Modulus of Elasticity – Enter the elastic modulus of the material, whose stress shall be
determined in Newtown per square millimeters. The elastic modulus of an object is defined as
the slope of its stress-strain curve in the elastic deformation region of the material to be
measured. Since this parameter is very significant for the stress calculation, it should be entered
as exact as possible. Please multiply the values in lb/in
2
with 0.0068971125763 to get the
modulus in N/mm
2
.
8.2. Poisson’s ratio – Enter the Poisson’s ratio of the material whose stress shall be determined. The
Poisson’s ratio is the ratio when a sample object is stretched of the contraction or transverse
strain (perpendicular to the applied load), to the extension or axial strain. Since this parameter is
a little less significant for the stress calculation, an approximate value may be entered.
FIGURE 95 - PARAMETERS OF THE MATERIAL
8.3. Gage factor – Enter the gage factor for the single strain gauge. The gauge factor is the ratio of
relative change in an electrical resistance to the mechanical strain epsilon. If all three gauge
factors are equal, enter the value and then press “All Same”.
FIGURE 96 - ROSETTE STRAIN GAUGE
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