To familiarize students with infrared thermography and its application in preventive maintenance, non-destructive testing and measurement of temperature and temperature distribution in the plant process engineering, electrical and building sectors.

Student responsibilities:

Attending lectures. Active participation in laboratory exercises. Preparation of reports on the measuring process. Passed the written examination (theoretical knowledge).

Grading and evaluation of student work over the course of instruction and at a final exam:

Attending lectures: 5% Preliminary exam or exam (written verification of theoretical knowledge): 35% Practical demonstration of the measurement procedure: 35% Preparation of measurement reports: 25%

Upon successful completion of the course, students will be able to (learning outcomes):

1 . Independently conduct thermographic measurements in the areas of: building construction, industry and the electrical sector.

2 . Apply the acquired knowledge in the quantitative and qualitative analysis of recorded thermograms.

3 . Indirectly draw conclusions about the condition of the recorded objects: in the industrial sector about the process flow and the condition of the objects, in the building construction sector about the quality of the building insulation; thermal bridges and the quality of sealing, in the electrical sector about the thermal condition of the objects and the urgency of interventions.

4 . Based on the measurement results, evaluate the condition of the observed objects and recommend measures related to their continued use.

5 . Prepare a thermographic report with the measurement results with a critical review of possible anomalies.

Lectures

1. Introduction to Thermography: the historical development of thermographic methods, possible applications, devices. Advantages and disadvantages of the thermographic method. Quantitative and qualitative thermography, active and passive thermography.

2. Temperature, the heat, the heat flow. Methods of measuring temperature: contact and contactless measurement. The advantages and disadvantages. The principle of thermographic devices.

3. The method of processing signals in a thermographic device. Types and characteristics of sensor, types and characteristics of lenses materials. The properties of materials in different parts of the electromagnetic spectrum.

4. Basic mechanisms of heat transport: conduction, convection and radiation. Physical fundamentals of thermographic methods. Basic laws of radiation: Planck"s law, Stefan-Boltzmann law, Wien displacement law, Kirchhoff"s law.

5. Surface"s characteristics relevant to radiation - radiative properties: emissivity, absorptivity, reflectivity and transmissivity of materials. Intensity of emitted radiation, incident radiation, radiosity. The parameters of the object and the parameters of the environment. The influence of the atmosphere.

6. Determination of the emissivity by measurement. Determination of ambient radiation by measuring the ambient temperature. Actual temperature and apparent temperature of the object. Sources of error in thermographic measurements.

7. The spatial resolution of the camera and the measurement error. Temperature resolution of the camera. The accuracy of temperature measurement. Control of accuracy. Short-wave and long-wave infrared cameras.

8. Thermographic image - thermogram. Temperature-focusing, optical focusing. Tools on the camera: temperature range (span), the temperature level, palettes, isotherm. Tools for processing IR images: measurement point, measurement range, the profile of the isotherm.

9. Application of thermography in specific sectors: buildings, electrical sector and industry. The required characteristics of thermal imagers for individual sectors.

10. Buildings: external and internal thermography. Thermal bridges, errors during installation, faults of insulation, damages of the facade, moisture. Measurement conditions. Standards.

11. Electro sector: production, distribution and distribution to consumers. Excess temperature, the critical value of overtemperature. Characteristic overheating. Terms of measurements. Standards.

12. Industry: measurement conditions, special measurements in the industrial sector. Typical measurements in industrial plants.

13. Application of thermography in medicine, veterinary medicine, protection of cultural heritage.

14. Required qualifications of personnel carrying out thermographic testing. The report of the thermographic measurements: the content and format of the report.

15. Written tests without final assessment.

Exercises

1. Introduction to the devices for contactless temperature measurement: Radiation pyrometers and infrared cameras

2. Introduction to the devices for contactless temperature measurement: Radiation pyrometers and infrared cameras

3. Handling of an infrared camera, the primary function menus. Recording and storing thermogram.

4. Handling of an infrared camera, the primary function menus. Recording and storing thermogram.

5. Setting the parameters of object and environmental in the infrared camera. Determination of ambient temperature. Control of an infrared camera to a black body.

6. Setting the parameters of object and environmental in the infrared camera. Determination of ambient temperature. Control of an infrared camera to a black body.

7. Individually thermographic measurement: the building sector. Sample: a wall built of different building materials to present a variety of errors. The presence of moisture

8. Individually thermographic measurement: the building sector. Sample: a wall built of different building materials to present a variety of errors. The presence of moisture

9. Individually thermographic measurements: electrical sector. Samples: measurement of the electric motor, bad electrical connections.

10. Individually thermographic measurements: electrical sector. Samples: measurement of the electric motor, bad electrical connections.

11. Individually thermographic measurement: the industrial sector. Active thermography. Samples with errors below the surface, pre-insulated pipe, thermal stations.

12. Individually thermographic measurement: the industrial sector. Active thermography. Samples with errors below the surface, pre-insulated pipe, thermal stations.

13. Preparation of the reports of the thermographic measurements and presentation of measurement results.

14. Preparation of the reports of the thermographic measurements and presentation of measurement results.

15. Preparation of the reports of the thermographic measurements and presentation of measurement results.

Compulsory literature:

Recommended literature: