Radiographic Inspection - Exposure-Density Relationship
Where: E1= Exposure 1
E2= Exposure 2
FD1= Film density at exposure 1
FD2= Film density at exposure 2
Radiographic Inspection - Exposure-Distance Relationship
Where:
E1 = Exposure
at D 1
E2 = Exposure
at D2
D1 = Distance
1 from source
D2 = Distance
2 from source
Inverse Square Law
Where:
I1 = Intensity
1 at D1
I2 = Intensity
2 at D2
D1 = Distance
1 from source
D2 = Distance
2 from source
Reciprocity Law
Where:
C1 = Current
1
C2 = Current 2
T1 = Time
1 at C1
T2 = Time
2 at C2
Geometric Unsharpness
Where:
Ug = Geometric
unsharpness
f = Focal
spot size
a = Distance
from source to object
Indication Depth
Where:
D = Defect
depth from the film side of the part
t = Thickness
of material
SD = Shift
of defect image on the film
SM = Shift
of surface marker on the film
Half-Value Layer Calculation
Where:
HVL = Half-value
layer
m = Linear attenuation coefficient