Design of Spider-type Non-Destructive Testing Device Using Magnetic Flux Leakage

The Magnetic Flux Leakage (MFL) method is a Non-Destructive Testing (NDT) that detects defects by using Pipeline Inspection Gauge (PIG) to detect MFL when passing through a defective area. Using these principles, this paper studied the design of mobile small PIG that can operate in piping perpendicular to the ground. Unlike the conventional PIG, a spider-type mobile small-scale design was designed to be attached to vertical piping and operable. It was analyzed using 3D Finite Element Method (FEM) and measured and analyzed data through experimentation. It was analyzed using a method, measured and analyzed data through manufacturing and experiment.