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Active thermography system


Active ThermoInspector

Active thermography system

In its basic configuration, the Workswell ATI system consists of a lamp (light / optical excitation source), a supply source, and a thermal camera / system controller. The light from the lamp flashes to thermally excite the material under inspection. Then, the thermal reaction of the investigated material is recorded by the camera. The resulting thermal camera image is first displayed within an infra-red spectrum, then processed and analyzed by the computer program, which detects and analyzes any defects.

All standard algorithms available

Our software can apply all conventional algorithms to the produced sequence:

  • Thermographic Signal Reconstruction (TSR)
  • Differential Absolute Contrast (DAC)
  • Pulsed Phase Thermography (PPT)
  • Higher-Order Statistics Thermography (HOST)
  • Principal Component Thermography (PCT)

Up-to-date algorithms

The system can also export into the most up-to-date algorithms, such as FFT, PCA, and high-order statistics.
The measured data can also be exported and processed in software such as Matlab and Mathematica.

Operators are recommended to use the Workswell CorePlayer software to analyze the produced data, which is included and delivered with the alternative thermology stystem.

Non-destructive testing

Active infra-red thermography is a technology for non-destructive testing, which uses an external energy source to induce (excite) the thermal difference between defective and undamaged areas in the tested sample. While a wide range of energy sources can be used, the most frequent types can be divided into lighting (optical), mechanical, and inductive. The breakdown of active thermography approaches is displayed in the image.

Optical excitation

When using an optical excitation approach, defects are simulated by light energy, which is transferred onto the surface of the sample, where there is a thermal effect on the material.

Thermal changes spread from the sample surface into the sample volume.
Optical excitation devices include:

  • Photographic Flashes (which incite Dirac’s Impulse)
  • Infra-red Lamps (which incite Unit Jump – Pulsed Thermography)
  • Halogen Lamps (Lock-in Thermography)

Configurable system

The Workswell ATI-based system is modular, and can be delivered in various configurations. These encompass different types of thermal camera (LWIR, MWIR, high-speed thermal camera, etc.), as well as different types of excitation sources (optical exit, electromagnetic excitation or mechanical excitation), as well as other equipment.

As an example, the most popular Workswell ATI-6000 system consists of a thermal camera (LWIR or MWIR) and a light source for optical excitation and lock-in thermography.

The Workswell ATI-6000 package

  • 1x optical excitation source
  • 1x supply source (generator)
  • 1x system control unit with touchscreen
  • 4x protective gloves and glasses
  • 1x thermal camera LWIR (optional MWIR)
  • 1x keyboard
  • 1x flash drive
  • 1x tripod for the thermal camera
  • 1x tripod for light
  • 2x transport boxes

Technical document

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