Torsional Fatigue Testing

The photographs below were taken at the Steel Research Centre, Colorado School of Mines.

Torsion fatigue samples, Colorado School of Mines, Department of Metallurgical Engineering	Torsion fatigue samples, Colorado School of Mines, Department of Metallurgical Engineering
Torsion fatigue samples, Colorado School of Mines, Department of Metallurgical Engineering	Professor David Matlock showing a sample where the surface in the centre has been deformed to introduce compressive stresses prior to fatigue testing. Colorado School of Mines, Department of Metallurgical Engineering
Sample showing torsion fatigue failure, just one of a huge collection of failure analyses belonging to Professor David Matlock. Colorado School of Mines, Department of Metallurgical Engineering	Sample showing torsion fatigue failure, just one of a huge collection of failure analyses belonging to Professor David Matlock. Colorado School of Mines, Department of Metallurgical Engineering
Sample showing torsion fatigue failure, just one of a huge collection of failure analyses belonging to Professor David Matlock. Colorado School of Mines, Department of Metallurgical Engineering	Samples showing torsion fatigue failure, just one of a huge collection of failure analyses belonging to Professor David Matlock. Colorado School of Mines, Department of Metallurgical Engineering

Hydrogen TWIP	Hydrogen in cracks	Stainless nanofluid	Aerogengine bearings
Ternary pearlite	TRIP multipass welds	Phosphorus	Shear instabilities
Surface displacements	Stressed duplex	Superbainite bearing?	Percolation