Thermal Non-Destructive Testing and Evaluation

Thermal (IR Thermography) in Non-Destructive Testing Name : Rangrej S.P.Reg. No. : 140954002Programme Name: ATPES 2014-2016

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BasicsIntroductionClassification of IR ThermographyLiterature reviewResultsApplicationsChallengesConclusionReferences

Outline of Presentation..2

.Temperature as a global measuring parameterThe primary issue is to illustrate how thermography could help classical and new tasks dealing with NDT/NDE.

Basics3

IR thermography maps IR radiation flux (energy) and can determine heat flux and surface temperatureIt is Non-Destructive & Non-ContactIt gives an image of the inspected objectIt works in real time.Introduction4

Passive mode of Thermal NDT requires only using IR cameras.

Active mode of Thermal NDT involves additional thermal stimulation of objects under test. Several types of heaters (coolers) are used in combination with IR cameras and computer stations and Control units.Pulsed thermographyLock-in thermographyClassifications of IR Thermography5

Pulsed thermography6short heatpulse using a high power source such as photographic flashes

Temperature Distribution

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Lock-in thermography8specimens surface is periodically illuminated byone or several modulated heating sources, e.g. halogen lamps

Temperature Distribution

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Title : The Role of Infrared Thermography in Nondestructive testing of Civil Engineering StructuresAuthor : Bojan, Faculty of Civil Engineering, University Of Zagreb

Literature Review10

Results11

The quantitative determination of their geometrical parameters and defect depth is the main objective for the practical problems like:

Locating and quantifying voids and honeycombing in concrete.Locating delaminations of plaster at concrete.Assessment of bonding of carbon fiber reinforced laminates glued on concrete.Identifying poorly grouted ducts.

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Other Applications.13

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Challenges.17

Many common electrical & Mechanical problems begin as an increase in temperature, a thermal image lets you easily detect them without interrupting operations.We can improve equipment maintenance, reliability and safety.Ultimately can save money.Conclusion18

[1] Nondestructive Handbook, Infrared and Thermal Testing, Volume 3, X. Maldague technical ed., P. O. Moore ed., 3rd edition, Columbus, Ohio, ASNT Press, 2001, 718 p.[2] Maldague, X.: Theory and practice of infrared technology for non-destructive testing, John Wiley and Sons, New York, 2001.[3] Wiggenhauser, H.: Active IR-applications in civil engineering, Infrared Physics & Technology 43, pp. 233238, 2002.[4] Stimolo M.: Praktische Anwendung der Thermografie im Straenbau und fur Abdichtungssysteme, DGZfP - Berichtsband 77, Thermografie-Kolloquium, Stuttgart, 2001 [in German].References19

THANKYOU

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