Non-destructive testing (NDT) is widely used for quality control in the fabrication of process plant and equipment. It is a set of techniques used to evaluate the structural integrity of materials and detect any flaws that can compromise their safety or functionality. Here are five of the most common NDT methods in use today. Liquid Penetrant Testing – Liquid penetrant testing is one of the simpler methods used to detect defects in material. When a liquid dye penetrant is applied to a surface, it is drawn into any surface cracks or voids, thereby highlighting visible breaks in the structure. Electromagnetic Testing – Electromagnetic testing is a category that includes Eddy Current Testing, Alternating Current Field Measurement and Remote Field Testing. These techniques can detect both surface and sub-surface flaws. Tests induce an electric current or magnetic field in the material and any defect creates a measurable response. NDT Services Magnetic Particl...