PTvis 6000 system

Pulse Thermography

Pulse thermography is a non-contact test method, well suited for characterization of thin films and coatings or for flaw detection. The extremely short test duration and high detection sensitivity makes PTvis a powerful tool in non-destructive testing. The lock-in technique allows the quantification of material thickness, porosity or thermal diffusivity. In addition, disturbances such as varying surface properties or inhomogenous heating are suppressed. With this fast and imaging method, the interpretation and documentation of the test results is clear and simple. The test system is modular and can be extended with other edevis excitation modules (e.g. OTvis, UTvis or ITvis).

Principle of Pulse Thermography

Pulse Thermography

Pulse thermography is used for analyzing interfaces, thicknesses and material defects in components and coatings. The thermal balance of a component is disrupted using a short pulse of energy. This disturbance decays rapidly by heat conduction. The decay behavior contains the desired information about many material properties. The heat is supplied by powerful xenon flash lamps. A fast infrared camera takes the thermal image sequence following the energy impulse. The acquired image sequence is analyzed pixel by pixel, online or in post processing. Optimized algorithms such as the pulse-phase analysis using Fourier transform allows for quantitative evaluation of the measured signal. Calibrations enable to determine related physical quantities, e.g. coating thickness or thermal conductivity.

Applications

Filiformkorrosion unter Lack

Analysis of growth of corrosion under paint with pulse thermography (left to right): 1 week, 2 weeks, 3 weeks, 4 weeks duration.

  • Characterization of paint
  • Measurement of film and coating thickness
  • Flaw detection on adhesive, welding and soldering joints
  • Inspection of composite material (e.g. CFRP)
Schichtdickenmessung von Lack auf Holz

Characterization of paint thickness (clear paint on on wood). Left: Pulse Thermography phase image. Right: Photo.

Screenshot DisplayImg Software

PTvis Software

  • DisplayImg Basic / Professional

    Extensive acquisition and evaluation software with leading concept such as project-tree and script-interface, dedicated for PTvis frequency measurements. Numerous extension modules are available

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  • DisplayImg Elements PTvis

    User-friendly, simple-to-use software specially designed for PTvis.

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Specification

Flash generator PTvis 3000 PTvis 6000 PTvis 12000
Energy 3 kJ 6 kJ 12 kJ
Supply 230V / 16A 230V / 16A 230V / 16A
Output channels 1 or 2 1 or 2 2 or 4
Housing Compact housing 19'' / 6U 19'' / 12U
Real-time synchronization yes yes yes
Communication interface - RS485 RS485
Suitable for continuous operation no yes yes
Connector for standard flash heads yes yes yes
Connector for linear high-power flash head no yes yes
Dimensions 34,5 x 19,5 x 28,5 cm 19", 6U, 475mm depth 19", 12U, 475mm depth
Weight 9 kg 29 kg 58 kg