Direct Shear, Torsion Testing
This week we'll be running elastic-inelastic torsion and direct-shear tests. You will collect torsion data until the bar becomes fully plastic and use that data to calculate G and the shear yield strength. While we're waiting for the torsion specimen to fracture, we'll also run a double-shear test. You'll compare the torsion and direct shear results with your tension results from earlier in the semester.
Video Lecture (20 minutes)Direct Shear Notes
- Torsion Test Video
- Fracture Geometry
- ASTM Standards
photos by Jeff Thomas, 2004 & 2000