Linear regression analysis of these results allowed
a determination of /~ for these composites. The
Pearson correlation coefficient for the least-squares
linear regression analysis was r ~ 0.999 in all cases.
Using Equation 2 and from calculations of the
106
10 5
104
Z.
u)
o
"~ 103
0
L)
102
10
0 0.50 1.00 1.50
Thickness (cm)
Figure2 X-ray attenuation versus thickness of the barytes/epoxy
composites. Barytes weight fraction: (+) 0%, (A) 10%, (0)
20%, (11) 30% and (0) 40%.
densities of the composites, the/x m of the composites
were determined. These coefficients were also determined
as a function of the volume fraction barytes
and are summarized in Table I.