Various methods of active thermography like Lock-In Thermography and Pulse Phase Thermography are imaging procedures that perfectly suit for contact-free and non-destructive material testing. In connection with high-resolution infrared cameras, they allow for quick detection of material defects and open up new possibilities in research, development and quality assurance.
Active thermography is the induction of a heat flow by energetically exciting a test object. The heat flow is influenced by interior material layers and defects. These inhomogeneities can be captured on the surface by high-precision infrared cameras. The additional application of different evaluation algorithms improves the signal-to-noise-ratio which allows for detection of smallest defects.
The versatile application options of active thermography require an elaborate configuration of every single inspection system. InfraTec offers a wide variety of necessary components along with a modular system architecture. The high-resolution infrared cameras, efficient control and evaluation software as well as the continuously operable excitation sources and controllers are interchangeable within the system and therefore allow a flexible adaptation to upcoming requirements.
Different types of defects of various materials can be detected by utilising specific energetic excitation units. InfraTec chooses the suiting excitation source, such as high-performance flashes, inductive units, hot- and cold air blowers and homogeneous halogen radiators, for the respective test situation.
Theoretical background – mechanical force, stress and temperature Methods for analysis
Examples from practice with application samples – elastic periodical load test and fatigue test
Short overview about InfraTec products
Complementary technical lecture
"Contribution of Thermoelastic Stress Analysis in mechanics of materials and structures: some illustrations" from Prof. Vincent Le Saux, École Nationale Supérieure de Techniques Avancées Bretagne
Failure analysis and defect inspection, quality and process control and flexible R&D solution
Hotspot detection on printed circuit boards, integrated circuits, semiconductor material and multi-chip modules
Detection of faulty thermal connections of heat sinks, short circuits, soldering defects and wire bonding errors
Complementary technical lecture Semiconductor IR-LIT Analytics – Challenges and Case Studies from Marko Hoffmann; Infineon Technologies Dresden GmbH & Co. KG