Magnetic Particle Testing (MT)
Surface and Near-Surface Defect Detection for Critical Components
Magnetic Particle Testing That Detects Surface Cracks Early and Keeps Components Fit for Service
Magnetic Particle Testing (MT) is one of the most reliable methods for detecting surface and near-surface discontinuities in ferromagnetic materials. At Inspecto Visio, we provide high-quality MT services that help you identify defects like cracks, seams, and voids that could compromise the structural integrity of your components. Whether you operate in the oil and gas sector, manufacturing, or offshore energy, our certified MT technicians ensure that your assets are thoroughly inspected and compliant with industry standards.
Why Choose Magnetic Particle Testing?
MT is a crucial non-destructive testing method for detecting surface flaws in materials like steel, iron, and other ferromagnetic metals. It’s a simple yet highly effective way to ensure the integrity of your materials before and during service.
- Surface and Near-Surface Detection: MT identifies defects on or just below the surface, such as fatigue cracks, weld discontinuities, and other imperfections that could lead to failure.
- Cost-Effective: MT is relatively quick and inexpensive compared to other NDT methods, making it ideal for routine inspections in high-volume environments.
- High Sensitivity: MT can detect even minute surface defects, ensuring that no critical flaw is overlooked.
- Versatile Applications: Suitable for inspecting welds, castings, and machined components in various industries, MT is a versatile and widely used inspection method.


Get in Touch for Expert Magnetic Particle Testing
Inspecto Visio is your trusted partner for reliable, efficient, and accurate Magnetic Particle TestingOur Magnetic Particle Testing Services
We offer a range of MT services designed to meet the needs of different industries and project types.
Visible and Fluorescent MT
We provide both visible en fluorescent Magnetic Particle Testing, depending on the requirements of your project. With visible MT, our technicians apply visible magnetic particles to the surface under inspection and use white light to detect surface flaws. For more sensitive detection, fluorescent MT is performed under UV light, highlighting even the smallest cracks or discontinuities.
Dry and Wet MT
Our Dry MT technique uses dry particles, ideal for rough surfaces or components with limited access. Wet MT, where magnetic particles are suspended in a liquid carrier, offers greater sensitivity and is more effective for smoother surfaces or finer detection needs. We will recommend the best approach for your specific inspection.
Applications of Magnetic Particle Testing
MT is a go-to method for detecting surface-breaking defects in ferromagnetic materials across various industries:
- Weld Inspections: MT is widely used to inspect welds for cracks, incomplete fusion, and other defects that could compromise structural integrity.
- Casting Inspections: Detecting surface flaws like seams or shrinkage in metal castings ensures that your components meet design and safety specifications.
- Forgings and Machined Components: MT helps identify surface cracks and inclusions that could lead to failure in critical parts such as shafts, gears, and axles.
- Offshore Structures: Regular MT inspections of offshore platforms and structural welds help maintain safety and prevent costly repairs due to undetected defects.
Benefits of Magnetic Particle Testing at Inspecto Visio
- Certified Technicians: Our Level II and III MT-certified experts have the experience and knowledge to ensure accurate, reliable inspections.
- Fast and Efficient: MT is a quick process, allowing for the rapid inspection of large areas without disrupting your operations.
- Non-Destructive: MT doesn’t damage the materials being tested, preserving their full functionality and ensuring they remain in service.
- Tailored Solutions: We offer customized MT services based on your project’s unique needs, ensuring that we detect flaws early and accurately.
Our Magnetic Particle Testing Process
Our MT process ensures that your materials are thoroughly inspected and any defects are identified early:
- Initial Consultation: We evaluate your materials and project requirements to determine the most appropriate MT technique for your needs.
- Magnetization: The component is magnetized using either direct or indirect methods, creating a magnetic field around the surface.
- Particle Application: Visible or fluorescent magnetic particles are applied to the surface, allowing defects to be detected through the interruption of the magnetic field.
- Inspection and Analysis: Our technicians perform the inspection, identifying any indications of surface or near-surface defects.
- Reporting: We provide a comprehensive report outlining any detected flaws and offer recommendations for further testing or repairs.
Industries We Serve with Magnetic Particle Testing
- Oil & Gas
- Offshore Wind Energy
- Manufacturing and Fabrication
- Aerospace
- Infrastructure and Civil Engineering
Why MT Matters for Your Projects
Magnetic Particle Testing is a critical tool for ensuring that your components meet safety and performance standards. Early detection of surface defects helps:
- Prevent structural failures that could lead to costly downtime or safety hazards.
- Maintain compliance with industry regulations such as ISO 9712, EN 473, and ASME BPVC.
- Extend the lifespan of your components by catching defects early and addressing them before they become critical.
- Ensure that your welds and materials are fit for purpose, reducing the risk of operational failures.
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Expert Consultation
Wolter van der Zee
QA/QC / Level III NDT Engineer