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Fatigue crack detection on structural steel members by using ultrasound excited thermography = Erkennung von Ermuedungsrissen in Stahlbauteilen durch ultraschallangeregte Thermografie
Plum, Robin Marc
2015
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Ultrasound excitation of structural steel members leads to localised energy dissipation at existent fatigue cracks and thus allows for thermographic flaw detection. Essential effects on the defect-selective heating, such as flaw size, plate thickness, crack mouth opening or static preload, are systematically investigated. Laser vibrometry measurements of the crack edges, theoretical modelling of frictional heating and numerical simulations contribute to the understanding of the involved physics.
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Keywords
- Ermüdungsriss
- fatigue crack
- infrared thermography
- Infrarotthermografienon-destructive testing
- Stahlbau
- steel construction
- Technology, engineering, agriculture
- Technology: general issues
- Ultraschallanregung
- ultrasound excitation
- Zerstörungsfreie Prüfung
Links
DOI: 10.5445/KSP/1000048191Editions