Universal Journal of Chemistry(CEASE PUBLICATION) Vol. 4(1), pp. 10 - 19
DOI: 10.13189/ujc.2016.040102
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Characterization and Modeling of the Mechanical Behavior of Aeronautical Alloy Based Composite

A. Sadki ^1,*, M.L.Hattali ², M. A. Bradai ³, R. Younes ³, N.Mesrati ^1,4
1 Laboratory of Sciences and Materials Engineering, National Polytechnic School of Algiers, Algeria
² Laboratoire FAST, Université Paris-Sud, Université Paris-Saclay, France
³ Laboratory of Mechanics, Materials and Energetic, Faculty of Technology, University of Bejaia, Algeria
⁴ Higher School of Aeronautical Technical, Algeria

ABSTRACT

This work focuses on the experimental characterization and mechanical behavior modeling of aeronautical alloy based composite to simulate tension test by finite element method and experimental test. The numerical finite element simulation allowed us to understand and manage a number of phenomena encountered during the mechanical behavior of our composites. Tensile tests applied have shown large changes in mechanical properties of the base alloy after coating, which are possibly related to the very different nature of the assembled materials and conditions of application. We note a strong decrease of the elastic limit of AG3 coated compared to AU4G. The high ductility of this alloy is the cause which engenders during the gritting process a large penetration of the granule particles in the substrate and the creation of plastic zones. Thus, a radial compression is exerted on the section which causes a plastification process. The decrease of the average section of the substrate after sandblasting, the stress concentration at the cavity and / or the compressive residual stress created when sandblasting are responsible for the decrease in breaking strength of the AU4G compared to the AG3. The material becomes hard and fragile. The experimental results obtained during our study are consistent with those of the simulation. Indeed, it was noted that the concentration of stresses during the tensile tests was located at the ends of the useful length of the test specimen.

KEYWORDS
Aeronautical, Coatings, Aluminum, Mechanical Behavior

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] A. Sadki , M.L.Hattali , M. A. Bradai , R. Younes , N.Mesrati , "Characterization and Modeling of the Mechanical Behavior of Aeronautical Alloy Based Composite," Universal Journal of Chemistry(CEASE PUBLICATION), Vol. 4, No. 1, pp. 10 - 19, 2016. DOI: 10.13189/ujc.2016.040102.

(b). APA Format:
A. Sadki , M.L.Hattali , M. A. Bradai , R. Younes , N.Mesrati (2016). Characterization and Modeling of the Mechanical Behavior of Aeronautical Alloy Based Composite. Universal Journal of Chemistry(CEASE PUBLICATION), 4(1), 10 - 19. DOI: 10.13189/ujc.2016.040102.