Final Exam 1.docx

The bending experimental unit provided in figure.1 is used to measure the amount of deformation with help of strain gauges. The location of the weight from fixed end is 250mm, the section modulus of the cross-section is 74.26𝑚𝑚3 and the modulus of elasticity of the material is 210Gpa. The reading of the strain gauge is given below Bending experment

𝜀=

Load in N

4.3

5.4

6.5

Reading in mV/V

-0.150

-0.188

-0.227

Figure.1

1 𝑈𝐴 𝑘 𝑈𝐸

𝑘 = 2.05

Figure.2

a) List the components b) Write down the experimental procedures c) Determine the amount of error that will experience for a load of 6.5N. d) Interpreted the results of the experiment