CEE 300 / TAM 324: Lab 4 Notch Sensitivity Worksheet Lab section: Student name: General note: use space as needed. The answer length is not suggested by the space. Include sample calculations where applicable. All figures and tables MUST be formatted as outlined in Lab 0 lecture – including captions. Q1 (15 pts). Complete Table 1 and plot load vs. deflection for all materials tested. Table 1—Notched bending specimen data Measurement or property Material Quantity Symbol Units 1045 HR Steel 6061 Aluminum PMMA Sharp Round Sharp Round Compr. Tension Initial data Overall beam height H mm Notch depth d mm Net beam height at notch h mm Notch radius r mm Beam thickness w mm Moment of inertia I
mm
4
Upper span U mm Lower span L mm Support moment arm a
L
U
2
mm Strength Apparent yield load P
y
kN Maximum load P
max kN Reason for stopping test — —
