Concept -We know in a elastic region
............................1
...............................................................2
So here in a diagram
1,3,5 gauges measure axial stress and strain
4 gauge measure axial compressive stress and strain
2,6 gauges measure lateral stress and strain
Solution
a)using equation 1 we get
Stress= Elasticmodulas* Strain
795=Elasticmodulas*81
Elasticmodulas=795/81=9.81 psi
b)poisson ratio= - strain at 1/strain at 2
=-(-23/81)=0.283 ANS
Dimensions of the board? 4 on bottom Strains and stresses (bending stress) were recorded &/or calculated...
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