Radiography Formula-
Inverse Square Law Exposure - DistanceReciprocity Law
Where:I1=Intensity 1 at D1
I2=Intensity 2 at D2
D1=Distance 1 from source
D2=Distance 2 from source
more information:Inverse Square LawCalculationWhere:E1=Exposure
at D1
E2=Exposure at D2
D1=Distance 1 from source
D2=Distance 2 from source
more information:Exposure-Distance CalculationWhere:C1=Current
1
C2=Current 2
T1=Time 1 at C1
T2=Time 2 at C2
more information:Current-Time Reciprocity Calculation
Film Density - Exposure GeometricMagnification Geometric
Unsharpness
Note: This is an approximation and is only valid for the
straight line portion of the film characteristic curve. See more
info section.Where:E1=Exposure 1
E2=Exposure 2
FD1=Film Density at Exposure 1
FD2=Film Density with Exposure 2
more information: Film Density - Exposure Calculation
Where:M=Magnification
a=Distance from source to object
b=Distance from object to detector
more information: Geometric Magnification Calculation
Where:Ug=Geometric unsharpness
f=Focal spot size
a=Distance from source to object
b=Distance from object to detector
more information:Geometric Unsharpness Calculation
Indication Depth AttenuationHalf-Value Layer
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
more information:Indication Depth Calculation
Where:Ix=transmitted intensity
Io=Original intensity
m=Linear attenuation coefficient
x=Distance in material or material thickness
more information:Attenuation Calculation Where:HVL=Half-value
layer
m=Linear attenuation coefficient
more information:Half-Value Layer Calculation
-Eddy Current Inspection Formula
Ultrasonic Formula
Angle Beam Inspection Calculations
