Ultrasonic Testing (UT) is a highly reliable non-destructive testing (NDT) technique that uses high-frequency sound waves to detect internal flaws, measure material thickness, or evaluate material properties. During UT, short ultrasonic pulses (typically between 0.1 to 15 MHz) are transmitted into the material. Reflections from internal features or defects are analysed to determine the integrity of the component.
Ultrasonic Thickness Measurement (UTM) is a non-destructive testing (NDT) technique used to accurately measure the thickness of metallic and non-metallic materials—without causing any damage to the component. This method is essential for detecting material loss due to corrosion, erosion, or wear in pipelines, pressure vessels, and structural components.
Magnetic Particle Inspection (MPI) is a fast and effective non-destructive testing (NDT) method used to detect surface and near-surface discontinuities in ferromagnetic materials such as iron, nickel, cobalt, and their alloys.
This technique is widely used during fabrication, maintenance, and in-service inspections.
Penetrant Testing (PT) is a widely used non-destructive testing (NDT) method for detecting surface-breaking defects in both ferrous and non-ferrous materials.
This low-cost, effective technique is ideal for inspecting a wide range of components across industries—especially where visual detection of small surface flaws is critical.
Radiographic Testing (RT) is a powerful non-destructive testing (NDT) technique that uses X-rays or gamma rays to inspect the internal structure of materials and components.
The method is based on the principle of differential absorption—different materials and thicknesses absorb radiation at different rates, which allows for the detection of internal flaws, variations in thickness, and material density changes.
Visual Testing (VT) is the most fundamental and widely used non-destructive testing (NDT) method, involving the direct inspection of materials and components using the naked eye or optical aids.
VT is typically the first step in the inspection process, providing quick and cost-effective detection of surface flaws, deformation, weld defects, and other irregularities.
PMI, the analysis of a metallic alloy to establish composition by reading the quantities by percentage of its constituent elements.
• Isolate finished welds to validate filler material composition and dilution rates.
• Highly specific and accurate results, essential to good quality control.
• Recover lost material traceability.
Hardness Testing (HT) is a key non-destructive mechanical testing method used to determine a material’s resistance to permanent deformation when subjected to a force. It provides insight into the strength, wear resistance, and durability of metals and other solid materials.
Hardness is a measurable property that helps evaluate material suitability for service conditions, heat treatment effectiveness, and conformity to manufacturing standards.
Ferrite Testing (FT) is a crucial non-destructive testing (NDT) method used to measure the ferrite content in austenitic, duplex, and super-duplex stainless steels. Maintaining the correct ferrite proportion is essential to ensure optimal corrosion resistance, mechanical strength, and especially resistance to stress corrosion cracking (SCC) in critical applications.
Holiday Testing—also known as a continuity test—is a non-destructive testing (NDT) method used to detect discontinuities such as pinholes, voids, and thin spots in protective coatings applied to conductive substrates.
This test ensures the integrity and effectiveness of coatings used for corrosion protection in pipelines, storage tanks, pressure vessels, and structural components.
Holiday testing works by applying a low-voltage or high-voltage current over the coated surface. If a flaw exists in the coating, the current completes the circuit and the tester signals a “holiday” (defect).