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Record Nr. |
UNINA9910716999003321 |
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Autore |
Von Doenhoff Albert E. |
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Titolo |
A method of rapidly estimating the position of the laminar separation point / / by Albert E. von Doenhoff |
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Pubbl/distr/stampa |
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Washington, [D.C.] : , : National Advisory Committee for Aeronautics, , 1938 |
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Descrizione fisica |
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1 online resource (9 pages, 1 unnumbered page) : illustrations |
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Collana |
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Technical note / National Advisory Committee for Aeronautics ; ; No. 671 |
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Soggetti |
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Laminar boundary layer |
Aerofoils |
Aerodynamic load |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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"October 1938." |
No Federal Depository Library Program (FDLP) item number. |
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Nota di bibliografia |
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Includes bibliographical references (page 9). |
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2. |
Record Nr. |
UNINA9910346778203321 |
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Autore |
Plum Robin Marc |
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Titolo |
Fatigue crack detection on structural steel members by using ultrasound excited thermography = Erkennung von Ermüdungsrissen in Stahlbauteilen durch ultraschallangeregte Thermografie |
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Pubbl/distr/stampa |
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KIT Scientific Publishing, 2015 |
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ISBN |
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Descrizione fisica |
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1 online resource (XVI, 334 p. p.) |
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Collana |
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Berichte zum Stahl- und Leichtbau / Karlsruher Institut für Technologie, Versuchsanstalt für Stahl, Holz und Steine, Stahl- und Leichtbau |
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Soggetti |
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Technology: general issues |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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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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