1. ME 322: Instrumentation Lecture 10 February 9, 20154 Professor Miles Greiner Lab 5 Summary and Calculations

2. Announcements/Reminders HW 3 due now (use ME 322 ID number!) – HW 4 due Friday Really could be turned in Wednesday – HW 5 Due Wednesday 2/18/15 Review 2/18/15, – Midterm Friday 2/20/15 This week: Lab 4 Strain Gage Installation – Everyone must wear safety glasses

3. UNR General Undergraduate Research Award Apply for up to $1,500 to perform 2015-6 academic- year-projects in close collaboration with a faculty mentor Application Deadline: April 6 th, 2015 Application instructions are online: – http://environment.unr.edu/undergraduateresearch/opportunities/gura.html http://environment.unr.edu/undergraduateresearch/opportunities/gura.html I am interested in working with students who do very well in this class – Opportunities in Heat Transfer applied to Nuclear Packaging safety

4. Lab 5 Measurement of Elastic Modulus of Steel and Aluminum Beams

5. Strain Gage Factor Uncertainty

6. Beam Thickness T and Width W

7. Distance between Gage to Mass Centers, L

8. Uncertainty of the Slope, a

9. Uncertainty of Slope and Intercept

10. Summary

11. Lab 5 Sample Calculations http://wolfweb.unr.edu/homepage/greiner/teac hing/MECH322Instrumentation/Labs/Lab%20 05%20Elastic%20Modulus/Lab%20Index.htm http://wolfweb.unr.edu/homepage/greiner/teac hing/MECH322Instrumentation/Labs/Lab%20 05%20Elastic%20Modulus/Lab%20Index.htm Slope uncertainty calculation, s a 95%-confidence-level uncertainties for each input Relative contribution to the uncertainty in the result from the uncertainty in each input Comparison of a result to reference value – Reference citation format