| DOI | Resolve DOI: https://doi.org/10.2514/1.18589 |
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| Author | Search for: Bellinger, Nicholas C.1; Search for: Komorowski, Jerzy P.1; Search for: Gould, Ronald W.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Aerospace Research
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| Format | Text, Article |
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| Conference | 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 13th AIAA/ ASME/AHS Adaptive Structures Conference, 7th AIAA Non-Deterministic Approaches Forum, 6th AIAA Gossamer Spacecraft Forum, and 1st AIAA Multidisciplinary Design Optimization Specialist Conference, April 18-21, 2005, Austin, Texas |
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| Subject | corrosion pillowing; fracture surfaces; lap joints; semi-elliptical cracks; aircraft; computer simulation; corrosion resistance; cracks; finite element method; fracture; stress analysis; fuselages |
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| Abstract | This paper presents the results of studies that have been carried out at the National Research Council on the effect that corrosion pillowing has on the structural integrity of fuselage lap joints. Modeling of corrosion pillowing using finite element techniques showed that the stress near the rivet holes increased to the yield strength of the material (Al 2024-T3) when the corrosion present was above 6% thickness loss. In addition, the analysis showed that pillowing resulted in a stress gradient through the skin thickness, which suggested that semi-elliptical cracks with a high aspect ratio could form. During teardowns of service-exposed lap joints, these types of cracks were found to occur at numerous holes and a closer examination of some of the fracture surfaces revealed the presence of fatigue striations. Therefore a new source of multi-site damage other than fatigue was identified. |
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| Publication date | 2005-05-21 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21275955 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 721bd37e-9324-476a-b481-b4b4485d6c0f |
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| Record created | 2015-08-21 |
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| Record modified | 2020-04-07 |
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