Magnetic Particle Testing (MPT): A Reliable Tool for Surface Crack Detection in Industrial Components
In the realm of non-destructive testing (NDT), Magnetic Particle Testing (MPT) stands out as one of the most cost-effective, accurate, and rapid techniques for detecting surface and near-surface discontinuities in ferromagnetic materials.
At Inspection Technic, we utilize advanced MPT methods to ensure industrial safety, quality control, and performance optimization for a wide variety of assets—ranging from pipelines to pressure vessels.
🧲 What is Magnetic Particle Testing?
Magnetic Particle Testing is a non-destructive method used to detect surface and slightly subsurface cracks, laps, seams, or inclusions in ferromagnetic materials like iron, nickel, cobalt, and some of their alloys.
The process involves:
Magnetizing the component.
Applying magnetic particles (dry or suspended in liquid).
Observing particle accumulation at areas of flux leakage (indicating a flaw or discontinuity).
This technique provides visual and immediate results, making it highly practical for field inspections.
🏗️ Where is MPT Used?
MPT is widely used across multiple industries, including:
Power Plants & Thermal Stations
Oil & Gas Pipelines
Automotive & Aerospace Components
Structural Steel & Welded Joints
Railways & Heavy Machinery
At Inspection Technic, our expert inspectors deliver on-site and in-house MPT inspections for all major industrial segments.
✅ Advantages of Magnetic Particle Testing
Highly sensitive to surface flaws
Quick and simple execution
Portable for field operations
Cost-effective compared to other NDT methods
No need to remove coatings if below permissible thickness
Immediate visual inspection results
🔧 MPT at Inspection Technic: Our Process
Our MPT process follows strict ISO and ASME standards and includes:
Surface Preparation
Removal of rust, grease, or paint (as needed) for accuracy.Magnetization
Using yoke, prod, or central conductor methods depending on geometry.Application of Magnetic Particles
Using visible or fluorescent particles—wet or dry, as per requirement.Inspection Under Proper Lighting
Using UV lamps for fluorescent inspections or white light for visible ones.Demagnetization & Cleaning
We ensure zero residual magnetism and provide post-test cleaning.
🔍 Why Choose Us for MPT?
At Inspection Technic, we bring:
🛠️ Advanced equipment & techniques
👷♂️ Experienced and certified Level II/III NDT professionals
📍 On-site services across India
📊 Digital inspection reports with traceable results
🔄 Integrated NDT solutions through our sub-branch, NDT Engineering Ltd.
We don’t just find flaws—we help prevent failures.