Effects of Stress on the Probability of Detection for Magnetic Flux Leakage Inspection

Defect separation considerations in magnetic flux leakage inspection

“…Figure 1 presents the interacting situation most often encountered in practice: two corrosion pits, aligned along the pipe axis. Most field inspections use a magnetisation of the pipe wall in the same direction (12) . In Figure 1, the shaded zone experiences lower flux density than the bulk of the material, since the defects mutually shield one another from the applied magnetic field.…”

Dynamic explicit finite element analysis of mechanical damage in natural gas transmission pipelines

“…As its name indicates, the damage from outside forces is typically caused by external forces, unstable ground, excavation and construction equipment. Together, we call these forms of damage as mechanical damage [4].…”