Fatigue life of postbuckled structures with indentation damage

Title

Fatigue life of postbuckled structures with indentation damage

 Author

Davila, CG (NASA Langley Research Center)
Bisagni, C. (TU Delft Aerospace Structures & Computational Mechanics) ORCID 0000-0002-8713-9763

 Date

2016

 Abstract

The fatigue life of composite stiffened panels with indentation damage was investigated experimentally using single stringer compression specimens. Indentation damage was induced on one of the two flanges of the stringer. The experiments were conducted using advanced instrumentation, including digital image correlation, passive thermography, and in-situ ultrasonic scanning. Specimens with initial indentation damage lengths of 37 mm to 56 mm were tested in fatigue and the effects of cyclic load amplitude and damage size were studied. A means of comparison of the damage propagation rates and collapse loads based on a stress intensity measure and the Paris law is proposed.

 Subject

fatigue
postbuckling
damage tolerance
indentation damage
delamination

 To reference this document use:

http://resolver.tudelft.nl/uuid:780b056d-465d-4965-9d57-d2d5d9cd3548

 Source

Proceedings of the 17th European Conference on Composite Materials: Munich, Germany 2016

 Event

17th European Conference on Composite Materials, ECCM 2016, 2016-06-26 → 2016-06-30, Munich, Germany

 Part of collection

Institutional Repository

 Document type

conference paper

 Rights

© 2016 CG Davila, C. Bisagni
Files
PDF 2016_Bisagni_Conf_ECCM17.pdf 712.44 KB
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