Astm E155: Porosity Levels Pdf Repack

If your repacked PDF has compressed JPEG artifacts or faded grayscale, you will under-call porosity (reject good parts) or over-call porosity (accept bad parts). Ensure your repack maintains 300+ DPI resolution for the radiograph plates.

A Level 3 porosity in a 0.5-inch section looks completely different than the same nominal level in a 1-inch section. Always reference the thickness-specific plate in ASTM E155. astm e155 porosity levels pdf repack

Place your production X-ray film (or digital radiograph) side-by-side with the PDF reference image on a calibrated NDT viewer. Match porosity type: If your repacked PDF has compressed JPEG artifacts