ASTM E155 is fundamentally a visual standard. Historically, it required buying actual film plates from ASTM International. Today, digital reference radiographs (ASTM E2422 for digital aluminum inspections) are standard.
By organizing the severity levels (1 through 5), differentiating gas from shrinkage porosity, and creating a searchable, high-contrast reference, you reduce interpretation errors, speed up inspection times, and ensure consistent acceptance decisions. astm e155 porosity levels pdf repack
ASTM E155 is a collection of reference radiographs (X-ray images) used to evaluate the severity of discontinuities—commonly known as defects—in castings. These are not "pass/fail" rules on their own; instead, they serve as a visual yardstick that manufacturers and purchasers use to agree on what level of porosity is acceptable for a specific part. 分析测试百科网 The 8 Levels of Severity The standard classifies discontinuities into 8 levels of severity ASTM E155 is fundamentally a visual standard
Non-Destructive Testing (NDT) / Aerospace Quality Control By organizing the severity levels (1 through 5),