Magnetic Particle Inspection, often referred to as Magnetic Testing, is a non-destructive technique used to detect surface and near-surface flaws in ferrous materials. The method works by magnetizing the component either through an external magnetic field or by-passing electric current through it. When a material has cracks, seams, or other discontinuities, the magnetic field is distorted at these locations, creating leakage flux. Finely milled magnetic particles applied to the surface are drawn to these leakage areas, visually outlining the defect and providing immediate indication of its size and orientation.

Components can be magnetized using several methods, including direct current through contact heads, coil encirclement, or using a threaded bar on specialized benches. In industrial practice, the electromagnetic yoke method is commonly used for its efficiency and precision. Magnetic particles can be applied in visible colours for standard inspections or coated with fluorescent dyes for enhanced detection under ultraviolet light. The fluorescent approach, called Fluorescent Magnetic Particle Inspection (FMPI), offers higher sensitivity and is particularly useful for identifying very fine or hard-to-see cracks, while coloured particle MPI provides clear results under normal lighting conditions.

MPI is widely utilized in industries where component integrity is critical, including aerospace, automotive, locomotive, power generation, nuclear, and petrochemical sectors. Commonly inspected items include shafts, gears, engine components, landing gear, bearing caps, threaded fasteners, and welded joints. The method is especially effective in identifying tight fatigue cracks, creep cracks, or other stress-related defects in service. However, MPI is limited to ferromagnetic materials and cannot be applied to non-ferrous metals or non-magnetic alloys such as austenitic stainless steel. With its speed, sensitivity, and cost-effectiveness, Magnetic Particle Inspection remains a trusted method for maintaining the safety and reliability of critical assets.

Key Objectives of Our Magnetic Particle Testing:

• Detect Surface & Sub-Surface Defects: Identify cracks, seams, and discontinuities in ferrous components.
• Ensure Quality & Safety: Verify components meet industry standards and specifications.
• Early Fault Detection: Spot fatigue, stress, and corrosion-related cracks before failure.
• Versatile Applications: Inspect shafts, gears, welds, turbine blades, crane lugs, and more.
• Efficient & Cost-Effective: Fast, reliable inspections that reduce downtime and support maintenance planning.

Why Choose Vericore Inspections?

• Critical Component Expertise: Skilled technicians specialize in inspecting defense components such as pistons, bolts, and structural parts to ensure zero cracks or flaws.
• Precision & Accuracy: Inspections are highly detailed to detect even the smallest surface or near-surface defects, ensuring component integrity under extreme conditions.
• Reliable Results: Our methods provide dependable assessments, minimizing the risk of failure in high-stakes applications.
• Customized Inspection Approach: Testing procedures are tailored for each component, material, and operational requirement to maximize accuracy.

Let us help you achieve excellence—contact us today to learn more.