Magnetic Particle Testing (MT)
Magnetic Particle Testing is a nondestructive examination method used to detect surface and slightly subsurface discontinuities in ferromagnetic materials. The process works by magnetizing the part and applying fine magnetic particles that gather around magnetic field leaks—revealing discontinuities such as seams, laps, cracks, and other production or in-service damage. MT is fast, cost-effective, reliable, and can be applied to many types of steel materials. It supports inspectors in evaluating product quality, interpreting indications, and determining acceptance or the need for further testing.
Our MT Services
At Twins Industrial Services, our magnetic particle testing personnel receive fundamental knowledge and training required for quality assurance and testing applications. Our certified technicians are equipped to ascertain that the proper test technique is used to ensure the quality of the finished product.
Wet Fluorescent MT
High-sensitivity inspection using wet fluorescent magnetic particles viewed under ultraviolet (UV) light. This method provides enhanced contrast and is well suited for detecting fine surface and near-surface discontinuities in critical welds and highly stressed components.
Wet Visible MT
This technique uses finely divided magnetic particles suspended in a liquid carrier, which is applied to a magnetized component under normal visible light. Wet visible MT is especially effective for detecting fine defects and is commonly used for detailed inspections where higher sensitivity is required.
Dry Visible MT
In this process, dry magnetic particles are applied to a magnetized component under normal visible light. Dry visible MT is especially effective for inspecting large components, rough surfaces, and parts at elevated temperatures, making it a practical and reliable technique for field inspections and industrial applications.
Ready to schedule an MT inspection?
Contact our team for quotes, availability, and safety planning.