Fatigue crack growth history in damage tolerance design of aircraft structures

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Fatigue crack growth history in damage tolerance design of aircraft structures

Fatigue crack growth history in damage tolerance design of aircraft structures

Siegl, Jan / Nedbal, Ivan / Kunz, Jiri

Knowing the real history of the fatigue process is a valuable asset to the for design, development, and reliable operation of structures exposed to time-variable loading service conditions. Information of this type is encoded in the fracture surface morphology. This information can be decoded by quantitative fractography and transformed it into a form interesting from the engineering point of view. Application of these fractographic methods is conditioned by the existence and detectability of fractographic features the characteristics of which are correlated with fatigue crack growth rate. In the paper presented, three various fractographic features are used for fractographic reconstitution - striations (in the case of constant amplitude loading), beach marks (for simple program loading), and special inserted fracture marks (for complex program loading). The importance and irreplaceable role of the fractographic analysis is illustrated by some case studies dealing with full-scale fatigue tests of aircraft structure parts.

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Title :

Fatigue crack growth history in damage tolerance design of aircraft structures

Additional title:

Die Geschichte des Ermüdungsrisswachstums bei der Schadenstoleranzauslegung von Flugzeugbauteilen

Contributors:

Siegl, Jan (author) / Nedbal, Ivan (author) / Kunz, Jiri (author)

Published in:

International Journal of Fatigue ; 31 , 6 ; 1062-1067

Publication date :

2009

Size :

6 Seiten, 16 Quellen

ISSN :

DOI :

https://doi.org/10.1016/j.ijfatigue.2008.05.006

Type of media :

Article (Journal)

Type of material :

Print

Language :

English

Keywords :

Flugzeugbau , Flugzeugzelle , Rissprüfung , Materialermüdung , Dauerschwingprüfung , Fraktographie , Bruchmechanik , Rissausbreitung , ungleichmäßige Beanspruchung , Dimensionierung

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