Radiographic Geometric Unsharpness Limitation

Radiographic geometric unsharpness limit is the minimum distance between the focal spot and the object to avoid edge unsharpness on the image. This ensures clear measurement technique.

Physico-Chemical Mechanism of Action

Geometric unsharpness arises from the width of the radiation beam penetrating the object. The closer the focus and the object, the wider the beam and the less accurate the image.

Metallurgical Relevance & Welding Risks

Too small a distance causes blurred edges on the image, making it harder to accurately evaluate defects like porosity or cracks. This can lead to wrong decisions in the quality control process.

Workshop Practice & Action Guidelines

Make sure the distance between the X-ray source (focus) and the weld object is at least 50 cm. This minimizes geometric unsharpness on the image and ensures clear metrology.

MetallurgieSchweißtechnik