Defects

Protocol for taking an X-ray with the image quality indicator (IQI) which allows to appreciate the resolution spatial.

Fig. 128 Image Quality Indicator

Examples of radiographs illustrating for some pictures difficulty in locating in space or ambiguity of interpretation.

Fig. 129 Jet engine blades castings

Fig. 130 V-shape weld tapping

Fig. 131 Aerospace Al Casting

Fig. 132 Gas porosity

Fig. 133 Shrinkage

ASTM reference snapshots listing the severities of various defects in aluminum casting

Fig. 134 ASTM E2422: Standard Digital Reference Images: Gas holes

Fig. 135 ASTM E2422: Standard Digital Reference Images: Gas porosity

Fig. 136 ASTM E2422: Standard Digital Reference Images: Shrinkage cavity

Illustrations of typical defects in welds.

Fig. 137 Reference radiographs: welds

The detectability of a crack is only possible if the direction of X-radiation propagation is tangent to the plan (without which the crack will be invisible because showing no difference in attenuation for the radiation), and it must also have an opening quite pronounced.

Fig. 138 Hot tears stress cracks

Fig. 139 Aerospace cast oil tank cover: fatigue cracks