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Defect strategies in Nickel Superalloys weld using active thermography
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- Garcia de la Yedra, Aitor (author)
- Control and Evaluation, IK4-LORTEK; Arranomendia Kalea 4A, Ordizia, Spain
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- Fernandez, Erik (author)
- Control and Evaluation, IK4-LORTEK; Arranomendia Kalea 4A, Ordizia, Spain
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- Beizama, Ane Miren (author)
- Control and Evaluation, IK4-LORTEK; Arranomendia Kalea 4A, Ordizia, Spain
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- (creator_code:org_t)
- 2014
- 2014
- English.
- In: 12th International Conference on Quantitative InfraRed Thermography, 7-11/7 Bordeaux. ; , s. 1-9
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- As a result of extreme operation conditions in gas turbines, high resistance materials with excellent behaviour at high temperature are required. Alloys, such as MarM-247 nickel based superalloy, with excellent mechanical properties at very high temperature (even at 85 % of their melting point) are being used in these applications. This extraordinary behaviour is mainly due to the presence of a strengthening phase (γ’) with the following chemical composition: Ni3(Al, Ti). However, during welding these materials are susceptible to cracking and this is why weld inspections become crucial. In this work different strategies for defect detection in welds are introduced, all of them based on active thermography. The work covers aspects such as different excitation and data evaluation strategies.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Produktionsteknik, arbetsvetenskap och ergonomi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Production Engineering, Human Work Science and Ergonomics (hsv//eng)
Keyword
- Defect detection
- Thermography
- Excitation source
- Manufacturing and materials engineering
- Produktions- och materialteknik
Publication and Content Type
- ref (subject category)
- kon (subject category)
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