1. Dr. Mohammed Abdulrazzaq
Bending Test
Dr. Mohammed Abdulrazzaq

2. Bending Test Study Elastic Bending of a Beam
Formulation: bending a cantilevered beam
Maximum load for elastic deformation
Conduct Bending Test
Determine Elastic Modulus & Poisson’s Ratio of material
Comparison to handbook value and previous Lab #1 results

3. Pure Bending Material Assumptions Homogeneousمتجانس Isotropicمتماثل
Geometry/Load Assumptions
X-section has a plane of symmetry
Bending moment applied in that plane

4. Deformation Grids

5. Neutral Axis and Strain (elastic and plastic range)

6. Elastic Strain & Stress Distribution

7. Elastic Strain and Stress

8. I = Area Moment of Inertiah b

9. Cantilevered Beam

10. Bending Moment along the beam
M = Px

11. Measuring Strain on surface

12. Estimating Maximum Load

13. Poisson’s Effect

14. Bending Test Data Sheet

15. Conduct the Bending Test
Please initialize the Strain Meter a couple of times to ensure that it indicates zero strains at zero load, and that there is NO DRIFT with time

16. Key Equations

17. Processing Data

18. Elastic Modulus Plot

19. Poisson’s Ratio Plot

20. Material Properties

21. Lab #3 Report due TODAY
Individual Data Processing and Individual Write Up
Lab #3 Report is due TODAY by midnight
Answer Multiple Choice Questions ONLINE TODAY
Answer Student Survey ONLINE TODAY
Submit Lab Report #3 in the drawer labeled “MECE204-Strength Lab” beneath M. E. Mail Folders