Three Point Bend Test Lab $|$

Use the Three Point Bend Test Data.pdf file to answer the following questions:

Note the bar has a width of $1"$ a thickness of $0\mathrm{.}125"$ and a gauge length of $2"$

No$.$ Question Answer SI

Units Points

$1.$

Calculate the area moment of inertia $($I$)$ of the bar: $($Show Calculation$)$

$2$

$2.$

Calculate the bending stiffness in the linear region: $($Show calculation$)$

$2$

$3.$

Calculate the flexural modulus for the bar: $($Show Calculation$)$

$2$

$4.$ Guess the type of material used to manufacture the bar N$/$A $2$

$5.$

Calculate the percent difference in theoretical value of Young's modulus published for this material verses the flexural modulus value you

calculated in the lab: $($Show Calculation$)$ N$/$A $2$

$6.$ What do you think causes the differences between the published and experimental values? $(2$ pts$)$