Thermography


Raise efficiency of your production

Inspection systems with cameras operating in the visible wavelength range usually cannot detect sub-surface defects and sometimes even those on the surface are hard to find. In these cases, thermography can be a solution. It is an imaging technique used to visualize the IR radiation intensity of objects by employing IR cameras.

In active thermography, the excitation of the objects is performed electrically (direct connection, induction), mechanically (ultrasound, hot air) or by illumination (special lasers, LEDs, flash lamps). Very short heat pulses (10 ms) allow the generation of a measurable heat flow. Temperature differences at the surface can be an indication of defects inside the object.

To reliably detect these defects, Intego develops and produces its own IR cameras. The new high-end model Spica 640 HS has a high full frame rate > 300 Hz; the spectral range is 1.3 to 5.6 μm. The noise equivalent temperature difference is very small (< 20 mK) to ensure precise measurements.

 

Performance data

Using thermography, various inspection objectives are achieved in a variety of applications.

  • Determination of the surface temperature of objects (e.g. electronics, semiconductor devices, solar panels, brakes of motor vehicles and trains)
  • Monitoring of welding processes, e.g. in plastic welding
  • Testing the quality of welding points and welding seams
  • Detection of pores, cracks, cavities/voids, delaminations, impurities and other defects in metals, ceramics, plastics, wood and composites
  • Detection of electrical defects, cracks and impurities in solar materials
  • Detection of electrical and mechanical defects in semiconductor devices and electronics
  • Determination of the electrical quality of solar materials, e.g. charge carrier lifetime
  • Determination of layer thicknesses, e.g. coating thickness of quartz crucibles
  • Testing the quality of adhesive bonds
  • Detection of gas emissions by spectrally resolved thermography (for example, CO2 has an absorption band at 4.3 µm)

 

Further option

Perhaps thermography is also the solution for your quality control. Please contact us.


Your contact for the thermography


Dr. Dieter-Karg
Dr. Dieter Karg

+49 9131 61082-250

dieter.karg@intego.de