
Understanding what constitutes a discontinuity under ASTM E155 is essential for proper interpretation. The standard covers several major categories:
When quality control managers, digital imaging technicians, and nondestructive testing (NDT) personnel look for data regarding , they are seeking to understand how gas holes, microshrinkage, and foreign inclusions are categorized, graded, and documented.
This comprehensive guide breaks down the ASTM E155 porosity levels, explains how severity grades are applied, contrasts film with digital "repacks" or digital reference formats, and highlights critical compliance factors for NDT professionals. What is ASTM E155?
Critical vs. Non-Critical Zones