Magnetic Testing (MT) is a non-destructive testing method used to detect surface and near-surface flaws in ferromagnetic materials such as iron and steel. The process involves magnetizing the material and then applying a magnetic powder or magnetic field to the surface. Any discontinuities in the material will disrupt the magnetic field, causing the magnetic particles to gather at the defect location and indicate the presence of flaws.
MT is commonly used in industries such as aerospace, automotive, and manufacturing to inspect welds, castings, forgings, and other components for defects such as cracks, porosity, and inclusions. It is a fast and reliable method for detecting defects that are not visible to the naked eye and can be performed on-site or in a laboratory setting.