
#1
Mar912, 08:41 AM

P: 138

I am trying to calculate youngs modulus of elasticity for results from a tensile test but cant seem to get a figure close to that of the common figure for the material
Material 0.1% carbon steel Area = 20 x 10^{6} Yield force = 6009N Length increase at yield force = 0.537mm = 0.000537m Original length = 25.6mm = 0.0256m E = σ/ε E = (6006/20x10^{6}) / (0.000537/0.0256) E = 14.32 x 10^{9} Typical value = 207 x 10^{9} Iv obviously went very wrong somewhere but i dont know where Thanks 



#2
Mar912, 09:31 AM

P: 19

Your calculations seem fine, what is the unit of the area? You can also make sure that the force is in N, not in kN or something.




#3
Mar912, 09:35 AM

P: 138

The unit of area is m^2, and the force was 6.009 KN so 6009 N. Its way off the typical value though, it doesnt make sense?



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