Active thermography

[3] Modern thermographic systems with high-speed and high-sensitivity IR cameras extend the possibilities of the inspection method.

[1] The thermographic testing can be provided on individual components in a laboratory or directly on technology facilities that are in duty.

The measured object can be heated by an external source directly, e.g. by halogen lamps or hot air.

The main advantage of IRNDT method is availability for inspection of various materials in wide range of industrial and research applications.

Laser welding of plastics is a progressive technology of connecting materials with different optical properties.

Among the most frequent users belong the automotive industry, which due to its stable continuous innovation enables fast implementation of advanced technologies in their production.

It is clear that laser welding significantly enhances engineering designs and thus brings a number of new products which previously could not be made by conventional methods.

This makes possible to decide whether or not to the weldment comply with established quality criteria during manufacture process.

However, techniques that involve periodic excitation using light sources allow for non-contact testing of electrode-free cells.

Common methods such as Illuminated Lock-In Thermography (ILIT) and Open Circuit Voltage Illuminated Lock-In Thermography (VOC-ILIT) are used to investigate defects or issues like ohmic shunts, cracks, open or short circuits, and degradation in photovoltaic materials.