CEE300 Lab 1 WS copy.pdf - CEE 300 TAM 324 Lab 1 Tension...

This preview shows page 1 - 4 out of 9 pages.

CEE 300 / TAM 324: Lab 1 Tension Test Worksheet Lab section: AB4 Student name: Chris Nguyen General note: use space as needed. The answer length is not suggested by the space. Q1 (5 pts). Construct a diagram of engineering stress vs. strain for each of the materials tested using plotting software, e.g. Excel, MATLAB, Origin, etc. The tab-delimited ASCII data files contain, in order, the crosshead position, the load, the strain, and the time. (For details, see lab manual Appendix B.) For ductile materials, select one strain scale such that only the elastic portion of the curve is emphasized; use the data in this range to determine modulus of elasticity. Then select a second strain scale that allows the entire curve to be included on your plot. For brittle materials, one scale is usually sufficient. Additionally, superimpose the stress-strain diagram for each material onto a single graph (with the exception of PMMA) using an appropriate strain scale. Answers: Cast Iron: Stress-Strain Graph for Cast Iron 0 50 100 150 200 250 300 350 400 0 0.002 0.004 0.006 0.008 0.01 0.012 Engineering Stress, ! (MPa) Engineering Strain, ε (mm/mm) Young's Modulus, E = 25.2 GPa
1045 Steel Cold-rolled: Stress-Strain Graph for Cold Rolled 1045 Steel Elastic Region of Stress-Strain Graph for Cold Rolled 1045 Steel 0 100 200 300 400 500 600 700 800 900 1000 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 Engineering Stress, ! (MPa) Engineering Strain, ε (mm/mm) 0 100 200 300 400 500 600 700 800 0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 Engineering Stress, ! (MPa) Engineering Strain, ε (mm/mm) Yield Strength, ! y = 635 Young's Modulus, E = 179 GPa
1045 Steel Normalized: Stress-Strain Graph for 1045 Steel Normalized Elastic Region of Stress-Strain Graph for 1045 Steel Normalized 0 100 200 300 400

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture