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Combined shear/compression structural testing of asymmetric sandwich structures

Castanié, Bruno and Barrau, Jean-Jacques and Jaouen, J.P. and Rivallant, Samuel Combined shear/compression structural testing of asymmetric sandwich structures. (2004) Experimental Mechanics, vol. 4 (n° 5). pp. 461-472. ISSN 0014-4851

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Official URL: http://dx.doi.org/10.1007/BF02427957

Abstract

Asymmetric sandwich technology can be applied in the design of lightweight, non-pressurized aeronautical structures such as those of helicopters. A test rig of asymmetric sandwich structures subjected to compression/shear loads was designed, validated, and set up. It conforms to the standard certification procedure for composite aeronautical structures set out in the “test pyramid”, a multiscale approach. The static tests until failure showed asymmetric sandwich structures to be extremely resistant, which, in the case of the tested specimen shape, were characterized by the absence of buckling and failure compressive strains up to 10,000 μ strains. Specimens impacted with perforation damage were also tested, enabling the original phenomenon of crack propagation to be observed step-by-step. The results of the completed tests thus enable the concept to be validated, and justify the possibility of creating a much larger machine to overcome the drawbacks linked to the use of small specimens.

Item Type:Article
Additional Information:Thanks to Springer Verlag. The original PDF of the article can be found at the Experimental Mechanics website : http://www.springerlink.com/content/0014-4851
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > EADS - Eurocopter (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Laboratory name:
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Deposited By:Samuel RIVALLANT

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