An Introduction to Neutron Scattering - Spallation Neutron Source

Neutron Diffraction Measures Mean Residual Phase
Strains when Results for a MMC are compared to an
Undeformed Standard
Residual Strain (me)
Residual strain (me)
4000
3000
2000
1000
0
-1000
-2000
-3000
-4000
0 20 40 60 80 100
Symbols show data points
Angle to the fiber (deg)
Kanthal
10 vol.% W
20 vol.% W
30 vol.% W
70 vol.% W
Tungsten
10 vol.% W
20 vol.% W
30 vol.% W
70 vol.% W
Curves are fits of the form =< e 11 >cos 2 a + < e 22 >sin 2 a
Pressure Vessels and Piping, Vol. 373, “Fatigue, Fracture & Residual Stresses”, Book No H01154