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Experimental analysis of impact and post-impact behaviour of inserts in Carbon sandwich structures

Mezeix, Laurent and Dols, Simon and Bouvet, Christophe and Castanié, Bruno and Giavarini, Jean-Paul and Hongkarnjanakul, Natthawat Experimental analysis of impact and post-impact behaviour of inserts in Carbon sandwich structures. (2019) Journal of Sandwich Structures and Materials, 21 (1). 135-153. ISSN 1099-6362

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Official URL: http://dx.doi.org/10.1177/1099636216687582


In aeronautics, honeycomb sandwich structures are widely used for secondary structures such as landing gear doors, flaps or floors, and for primary structures in helicopters or business jets. These structures are generally joined by using local reinforcements of the insert type. In the present study, 50 J low velocity impact tests were performed on inserts using a drop-weight device and the impact response and failure patterns were analysed. Impacted specimens were then pull-through tested to failure. Some of the tests were stopped before final failure in order to obtain precise details on the failure scenario. It was shown that, in the cases studied, the residual strength after impact was very high (about 90%) in comparison to the large reductions habitually observed in compression after impact tests.

Item Type:Article
HAL Id:hal-01828703
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Burapha University (THAILAND)
Other partners > Geo-Informatics and Space Technology Development Agency - GISTDA (THAILAND)
Other partners > Sogeclair (FRANCE)
Laboratory name:
Deposited On:09 Feb 2017 10:49

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