MAE 244 – Photoelasticity Lab Quiz – Spring 2010

NAME:_______________________________________________________________________________

1) Sketch and describe the components of a polariscope (25 points)

2) Describe the two different photoelasticity experiments performed in the lab. Please discuss the differences (25 points)

3) For the semicircular notched specimen with dimensions shown below and utilizing the fringe patterns shown in the images below, calculate the experimental stress value (σmax) corresponding to each fringe (50 points)

w=2.000”

h=0.120”

d=0.885”

r=(w-d)/2=0.5575’’

80 lbs

160 lbs