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Additive metal solutions to aircraft skin corrosion

Published online by Cambridge University Press:  09 January 2020

N. Matthews Open the ORCID record for N. Matthews [Opens in a new window] ,
R. Jones ,
D. Peng ,
N. Phan  and
T. Nguyen
N. Matthews*
Affiliation:
RUAG Australia, 836 Mountain Highway, Bayswater, Victoria, 3153, Australia
R. Jones
Affiliation:
Centre of Expertise for Structural Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria, 3800, Australia
D. Peng
Affiliation:
Centre of Expertise for Structural Mechanics, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria, 3800, Australia
N. Phan
Affiliation:
Structures Division, Naval Air Systems Command, Patuxent River, MD, 20670, USA
T. Nguyen
Affiliation:
Structures Division, Naval Air Systems Command, Patuxent River, MD, 20670, USA
*
[email protected]
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Abstract

This paper focuses on the problem of skin corrosion on the upper wing surfaces of rib-stiffened aircraft. For maritime and military transport aircraft this often results in multiple co-located repairs. The common approach to corrosion damage in operational aircraft is to blend out the corrosion and rivet a mechanical doubler over the region. In particular this paper describes the results of a combined numerical and experimental investigation into the ability of the additive metal technology, Supersonic Particle Deposition (SPD), to restore the load-carrying capacity of rib-stiffened wing planks with simulated skin corrosion. The experimental results reveal that unrepaired skin corrosion can result in failure by yielding. The experimental results also reveal that SPD repairs to skin corrosion can restore the stress field in the structure, and can ensure that the load-carrying capability of the repaired structure is above proof load.

Keywords

Aircraft skin corrosionadditive metal technologybuckling loadexperimental stress analysisload carrying capacityDesign Limit Load
Type
Research Article
Information
The Aeronautical Journal , Volume 124 , Issue 1276 , June 2020 , pp. 872 - 887
Copyright
© Royal Aeronautical Society 2020

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Footnotes

A version of this paper was first presented at the 18th Australian International Aerospace Congress in February 2019.

References

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