IQI Sensitivity Calculator

Calculate required Image Quality Indicator (IQI) wire or hole size and verify radiographic sensitivity per ASTM E1742

Input Parameters

Results

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Required IQI Designation
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Essential Wire Diameter
in
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Hole Diameter (hole-type)
in
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Radiographic Sensitivity
%
Note: Per ASTM E1742, E747, and E1025. Source-side IQI placement preferred. Film-side requires demonstration of equivalent sensitivity. Verify IQI visibility before accepting radiograph.

Reference

Wire IQI (ASTM E747): Essential wire = sensitivity% x thickness Hole IQI (ASTM E1025): IQI thickness = 2% of specimen 2-2T: 2% IQI thickness, 2T hole diameter Film-side placement requires finer sensitivity Sensitivity = (IQI size / specimen thickness) x 100%