D= 8 in; h= 7.148 in; bf= 4.001 in; tw= 0.271in; tf= 0.426in; L (length of the beam) =18.4 in I= (bf*D3 – h3 (bf – tw))/12= 57.6 in4; E (Referenced value of Young’s modulus) = 29X106 psi Theoretical Strain: ε= σ/E= (M*y)/(E*I)

P = load
a = distance from support to the applied load (48 in)
y = distance from neutral axis to the extreme element in y-direction The sing in the theoretical strain (±) determines if the strain is in compression or tension. * For P = 2000lbs: ε = (2000*48*±4)/( 29X106 *57.6) = ± 230 x 10-6. * For P = 4000lbs: ε = (4000*48*±4)/( 29X106*57.6) = ± 460 x 10-6. * For P = 6000lbs: ε = (6000*48*±4)/( 29X106*57.6) = ± 690 x 10-6

Data Analysis

Positions of the electrical Strains Gages:
Gauge Number| Distance from bottom(in)| Distance from NA (in)| 1| 8| 4|
2| 6.69| 2.69|
3| 5.93| 1.93|
4| 5.12| 1.12|
5| 4.5| 0.5|
6| 3.77| -0.23|
7| 3| -1|
8| 2.18| -1.82|
9| 1.4| -2.6|
10| 0.4| -3.6|

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Overview 7
Research Question/Hypothesis 7
OBJECTIVES AND AIMS 8
Overall Objective 8
Specific Aims 8
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