NTD system for active thermography – Workswell Active ThermoInspector

Workswell Active ThermoInspector (“Workswell ATI”) is an NDT (Non-destructive testing) system operating on the principles of what is known as active thermography.

In its basic configuration, the Workswell ATI system consists of a lamp (light / optical excitation source), a supply source, a thermal camera and a system controller. The flash light thermally excites the material under inspection. The thermal reaction of the investigated material is recorded by the camera. The resulting image sequence in an infra-red spectrum is then processed and analysed by the computer program, which detects and analyses the defects. The 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).
NTD system for active thermography - Workswell Active ThermoInspector

The most up-to-date approaches are used in these algorithms such as FFT, PCA, and high order statistics. The measured data can be exported and consequently processed in SW such as Matlab, Mathematics etc.

It is recommended to use the Workswell CorePlayer software to analyse the produced data, which is delivered together with the whole alternative thermography system.

INQUIRY

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

When using optical excitation, defects are simulated by lighting energy, which is transferred onto the surface of the sample where there is a thermal effect on the material. Thermal changes are spread from the surface into the volume of the sample. Optical excitation devices include photographic flashes (implementing the so-called Dirac’s impulse), infra-red lamps (implementing the so-called unit jump – pulsed thermography) or halogen lamps (lock-in thermography) and others (see image).

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

As an example configuration, 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.

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The Workswell ATI-6000 package contains:

  • 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

Thermographic part 
Resolution640 x 480 pixel camera head
Framerate50 Hz
-40°C to +650°C (2 subranges)
Temperature ranges(optional up to 2 000°C with special filter)
Accuracy±2% or ±2°C
Temperature sensitivity≤0.03°C (30mK) @ 30°C
Spectral Range7.5 – 14 μm
Dynamic range14bit radiometric temperature data, 14bit RAW data
CalibrationYes, calibrated both temperature ranges
Detector TypeUncooled microbolometer
LensesInterchangeable and focusable, various field of view
Available Lenses25° or 45° lens (standard 25° lens)
Remote ControlFull remote control via GigE interface from Touchscreen analysis Industrial PC
Excitation part
Mobile Flash source generator6000 J Power Pack, Sync function, 20kg weight
Industrial PC controller for direct Lamp and Thermographic system control,
Signal generator for direct Flash Thermography control, Installed operating
Lamp controlsystem and full control software for Active Flash Thermography analysis,
Thermography CorePlayer software included
Lamp headHalogen 6000 J Flash head
Analysis software features
RecordingFull radiometric video sequence recording, opening, playing, etc
Measurement functions, ROI analysis, FFT calculation, Statistical quantitative
Analysisevaluating, MAX MIN, Filtering, Averaging, etc
History and LoggingFull user history logging, data saving and data management
GUIGraphical user interface, visualization and indicator panel
ReportingMultipage PDF reporting, IR image, Graph and text reporting
ProjectUser project and file editing and creating
Operating Environment
Operating temperature-0°C to +45°C
Storage temperature-20°C to +60°C
Humidity5% to 95% non-condensing
Content of deliveryInfrared camera, Lamp heads, Power pack source, cables, Industrial
Computer and signal generator, calibration certificate, Active thermography
software, transport cases

Workswell CorePlayer

Software is designed to perform detailed analysis, editing, exporting to different formats, and creating comprehensive reports from the thermograms. All common functionalities for analysis of such data (temperature on the spot, minimum and maximum of the area, temperature profile, zoom, change in temperature scale, color palette, emissivity etc.) are available within the software, as well as extending functions such as GPS position on a map, or displaying the digital picture. See the data list for further information on all functionalities.

Workswell CorePlayer

Trial version

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Datasheet

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Format Name Size Download
pdf icon Datasheet 0,4 MB DOWNLOAD

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