Modeling and Experimental Validation of Critical Distance and the Maximum Depth of Galvanic Corrosion-Induced Pitting on the 2024-T3 with CFRP Joint
237th ECS Meeting, Montreal, Kanada, 10 Mayıs 2020, (Özet Bildiri)
- Yayın Türü: Bildiri / Özet Bildiri
- Doi Numarası: 10.1149/ma2020-01141014mtgabs
- Basıldığı Şehir: Montreal
- Basıldığı Ülke: Kanada
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
Modeling and Experimental Validation of Critical Distance and
the Maximum Depth of Galvanic Corrosion-Induced Pitting on the 2024-T3 with
CFRP Joint
Mustafa
Anıl Yıldırım1, Metehan
Erdogan2 and Ishak
Karakaya1
Published 1 May 2020 • © 2020 ECS - The Electrochemical
Society
ECS
Meeting Abstracts, Volume
MA2020-01, C01:
Corrosion General Session
DOI
https://doi.org/10.1149/MA2020-01141014mtgabs
Abstract
For today's aviation industry, reducing fuel consumption in
aircrafts has become one of the most important goals. Therefore, the use of
lightweight materials, such as CFRP (carbon fiber reinforced plastic),
aluminum, magnesium, or titanium has increased. Different combinations of
materials that may be electrically in contact with each other in the presence
of moisture cause galvanic corrosion. Especially, pits caused by galvanic
corrosion jeopardize the structural strength of an aircraft. Within the scope of
this work, an experimental setup was developed for the validation of a finite
element model (FEM) for simulating galvanic corrosion of 2024-T3 sheet and CFRP
in a 5 wt% NaCl solution. Corrosion parameters of both materials were
determined separately by potentiodynamic polarization experiments. The critical
distance for galvanic corrosion-induced pitting on the aluminum alloy surface
and the maximum pit depth were determined by FEM and confirmed by immersion
tests in the same environment.