PRE-CONFERENCE COURSES
(A) Basic Thermography (4 hours)
by Prof. X. Maldague, Université Laval, Canada
by Prof. V. Vavilov, Tomsk Polytechnic University, Russia
- Introduction
- Mechanisms of heat transfer
- conduction, convection, radiation
- Basics of InfraRed
- Radiation laws (emissivity, absorptivity, reflectivity)
- Radiometry and temperature measurement
- Noise considerations
- Solving thermal problems by mathematical modelling
- Transient 1D analytical modelling
- Numerical modelling for 1D, 2D, 3D geometry in solids materials
- On thermal stimulation in the active approach
- Pulse thermography
- Step heating (long pulse)
- Lockin thermography
- Vibrothermography
- Experimental techniques
- IR Detectors
- Experimental set-up
- Deployment, data processing and applications
- Data processing
- Applications
(B) Applications of Thermography to Thermo-Fluid-Dynamics (3 hours)
by Prof. G. M. Carlomagno, Universita di Napoli Federico II, Italy
- Basics of infrared thermography
- The fundamental laws
- Performance of an infrared scanning radiometer
- Restoration of the thermal image
- Heat flux sensors for convective heat transfer measurements
- Operating modes
- Detailed applications of the:
- heated-thin-foil steady state technique
- thin-film sensor unsteady technique
- Other application examples, in brief
- Conclusions
(C) Application of thermography to buildings (3 hours)
by Prof. E. Grinzato, CNR-ITC, Padova, Italy
- Introduction
- From the energy to the surface temperature
- Thermal model of buildings in steady and transient regime
- IR Thermography indoor and outdoor
- Boundary conditions monitoring
- Evaluation of thermal properties of building materials:
- Thermal diffusivity
- Thermal effusivity
- Thermal conductivity
- Heat Capacity
- The energy saving problem
- NDE of structure strengthening
- Moisture detection on buildings
- Envelope and Heating Ventilating Air-Conditioning (HVAC) plant performances
- Case study: floor and ceiling radiant heating systems
- Heritage Buildings:
- Decay of the structure and finishing
- Hidden structures location and identification (NDT)
- Painted surfaces Non Destructive Evaluation (NDE)
- Conclusions
(D) Medical Thermography (1 day)
by Prof. E. F. J. Ring, Dr P. Plassmann, Prof. K. Ammer, Dr R. Thomas; Medical Imaging Research Group, Faculty of Advanced Technology, University of Glamorgan, UK
- Historical Introduction, F. Ring
- Principles of thermal physiology, K. Ammer
- Thermal physiology, K. Ammer
- Standard protocols for thermography, F. Ring
- Causes of human temp. increase & decrease, K. Ammer
- Film, Hot and cold "Living Body", F. Ring
- Provocation tests, F. Ring
- IR Detectors and cameras, R. Thomas
- Image processing principles, P. Plassmann
- Quality assurance in thermography, P. Plassmann
- Educational resources, K. Ammer
- Future developments in thermography, F. Ring
(E) Application of dynamic thermography to Nondestructive Testing (3 hours)
by Prof. G. Busse, University Stuttgart, Germany
- Introduction: Constant temperature fields
- Thermography with no heating
- Thermography with constant external heating
- Thermography with constant internal heating:
- Vibrothermography
- Activation of internal heat sources by selective spectral heating
- Resistive heating
- Dynamic thermography: response of solids and sub-surface defects
- Oscillating temperature fields (Thermal waves, Lockin-Thermography)
- Transient thermography (Step function response)
- Burst thermography (Principle and applications)
- Pulse thermography (Principle and applications)
- Methods of Lockin-Thermography and their application
- Thermal waves and photothermal detection
- Lockin-thermography = phase sensitive thermography = multiplex photothermal imaging
- 3.1 Lockin thermography with optical excitation (OLT)
- Coatings (paint, veneered wood, ceramics on metal...)
- Laminates
- Electronics
- 3.2 Lockin thermography with sound or ultrasound excitation (ULT)
(Heating with loss angle or friction: defect-selective NDE)- Cracks
- Delamination
- Impact
- Corrosion
- 3.3 Induction Lockin thermography (ILT)
- Crack tips in metal
- Impact damage in CFRP
- Disbond in C-SiC-Ceramics
- Conclusion
- Advantages/Disadvantages as compared to other NDE-methods
- Emerging developments