From: Novel Ring Compression Test Method to Determine the Stress-Strain Relations and Mechanical Properties of Metallic Materials
Elastic modulus of the die
Geometric dimensions
Power-law parameters
Ep (GPa)
D (mm)
d (mm)
B (mm)
E (GPa)
σy (MPa)
n
200
10
6
1
400
0.1 to 0.4