Experiment3.pdf - Department of Engineering Technology CET...

This preview shows page 1 - 4 out of 8 pages.

Department of Engineering Technology CET 345W Materials Testing Laboratory Experiment No. Torsion Test Civil Engineering Technology Old Dominion University Video Lecture Old Dominion University Civil Engineering Technology Department Kaufman Hall, Room 149 Norfolk, VA 23529 Table of Contents 1. Summary …………………………………………….…………………………… 1
2. Procedure ……….………………………………………………………………… 1 3. Laboratory Equipment………….………………….……………………………… 2 4. Experiment Requirements ….…….………………………………………………. 2 5. Required Data …………….…….………………….……………………………. 3 6. Sample Calculations ….…….…….……………….……………………………. 4 7. Sketches/Graphs …………….…….……………….……………………………. 5 8. Conclusions/Analysis …………………………….………………………………. 5 Appendix 1: References Appendix 2: Torsion Test Lab Data
1 1. Summary When torque is applied to a part of a machine there is a transmission of power by shafts and machine members. The buildup of torque results in the build-up of shear stress within the power-transmitting member. If the shaft is not properly designed, it may fail due to the torsional force. The torsional test is performed to investigate the shearing properties of both solid and hollow specimen however, it cannot be performed on brittle materials and requires correction factors for shapes other than circular sections. In this experiment, the torsional test will be used to investigate shearing properties of a mild steel bar. The torsion test will provide the necessary information to understand the shearing stress-strain relationship. There should be a relationship shown between the modulus of rigidity and the tensile modulus of elasticity. The necessary information should be provided to also find ductility and modulus of rupture through the torsion formula.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture