Non-destructive Testing

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Non-destructive Testing 2016-12-07T20:00:22+00:00

Non-destructive Testing

Non-destructive testing (NDT) or non-destructive evaluation (NDE) is a special infrared measurement method. Conventional thermal imaging is considered a passive thermography method. The heat that the infrared camera measures is being radiated by the object. This may be due to heat dissipation in an electrical motor or an exothermic reaction of a chemical process. Once the object has cooled down, there is no more (thermal) information to be gained from it. The part is in thermal equilibrium. In contrast,  non-destructive testing utilizes an external heat source to warm up the object that is being observed. It is therefore considered an active thermography method. A suitable heat source is stimulating the object while a thermal camera is recording a sequence of images over time. Special non-destructive testing software analyzes the sequence of images, pixel by pixel, and performs complex mathematical operations on the temporal thermal response. This temporal thermal response of the thermal wave on the surface of the material is then being transformed into a varying image contrast. There are several different active thermography methods available. Non-destructive testing greatly enhanced the ability of a thermal camera.

Using these active, non-destructive testing methods, such as Lock-In, Transient, and Pulse thermography possess the ability to perform advanced inspections or thermal stress mapping that resolves temperature differences as low as 1 mK. Infrared NDT is a widely used method to evaluate the properties of a material, component or, system without causing damage. Thermal imaging cameras can detect internal defects through target excitation and the observation of thermal differences on a target’s surface. It is a valuable tool for detecting defects and points of failure in composites, solar cells, bridges, and electronics. It is also a great tool for thermal mapping of stress when performing materials testing.

Foreign Object Detection

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Compact & Portable NDT

checkir
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Aircraft Inspection System

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Advanced Composite NDT

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NDT for Metallics and Ceramics

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Advanced NDT for Solar Panels

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Thermoelastic Stress Analysis

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Semiconductor Failure Analysis

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