Youngs modulus of elesticity


by MMCS
Tags: elesticity, modulus, youngs
MMCS
MMCS is offline
#1
Mar9-12, 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 109
Typical value = 207 x 109

Iv obviously went very wrong somewhere but i dont know where

Thanks
Phys.Org News Partner Science news on Phys.org
Cougars' diverse diet helped them survive the Pleistocene mass extinction
Cyber risks can cause disruption on scale of 2008 crisis, study says
Mantis shrimp stronger than airplanes
Camille
Camille is offline
#2
Mar9-12, 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.
MMCS
MMCS is offline
#3
Mar9-12, 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?


Register to reply

Related Discussions
Youngs Modulus Introductory Physics Homework 2
youngs modulus Introductory Physics Homework 4
Youngs Modulus Introductory Physics Homework 3
Youngs Modulus and Elastic Modulus Introductory Physics Homework 6
youngs modulus.... Introductory Physics Homework 1