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The impact behavior of aluminum hybrid laminates

Patryk Jakubczak (Department of Materials Engineering, Mechanical Engineering Faculty, Lublin University of Technology, Lublin, Poland)
Jaroslaw Bieniaś (Department of Materials Engineering, Mechanical Engineering Faculty, Lublin University of Technology, Lublin, Poland)
Krzysztof Majerski (Department of Materials Engineering, Mechanical Engineering Faculty, Lublin University of Technology, Lublin, Poland)
Monika Ostapiuk (Department of Materials Engineering, Mechanical Engineering Faculty, Lublin University of Technology, Lublin, Poland)
Barbara Surowska (Department of Materials Engineering, Mechanical Engineering Faculty, Lublin University of Technology, Lublin, Poland)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 July 2014

458

Abstract

Purpose

The purpose of this study was to carry out the analysis of impact resistance for aluminum hybrid laminates and polymer matrix composites reinforced with glass and carbon fibers. Damage modes and damages process under varied impact energies are also presented and discussed.

Design/methodology/approach

The subject of examination were fiber metal laminates – FMLs (Al/CFRP and Al/GFRP). The samples were subjected to low-velocity impact by using a drop-weight impact tester. The specimens after impact were examined using non-destructive and destructive inspection techniques.

Findings

The hybrid laminates are characterized by higher resistance to impact in comparison to the conventional laminates. The delaminations between composite layers as well as the delaminations on metal/composite interface and lateral cracks are the prevailing type of destruction mechanisms. No significant relationships between metal volume friction coefficient vs response to the impact were recorded for the hybrid laminates under tests.

Practical implications

The understanding of impact behavior of FMLs is particularly important for selecting these materials and their designing, in damage tolerance philosophy aspect in aerospace industry as well as in searching the methods of predicting of FML hybrid materials resistance to impact. The test results might be useful for the validation of simulations using numerical methods.

Originality/value

The paper presents the impact resistance of new hybrid laminates for aerospace applications. The identification of damage character and failure mechanisms as well as the relationships between damage and impact responses of aluminum/carbon and aluminum/glass hybrid laminates were estimated.

Keywords

Acknowledgements

Financial support of Structural Funds in the Operational Programme – Innovative Economy (IE OP) financed from the European Regional Development Fund Project No POIG.0101.02-00-015/08 is gratefully acknowledged. Special acknowledgements to PhD Krzysztof Dragan and his team from Air Force Institute of Technology (Warsaw, Poland) for assistance in implementation of ultrasound images.

Citation

Jakubczak, P., Bieniaś, J., Majerski, K., Ostapiuk, M. and Surowska, B. (2014), "The impact behavior of aluminum hybrid laminates", Aircraft Engineering and Aerospace Technology, Vol. 86 No. 4, pp. 287-294. https://doi.org/10.1108/AEAT-12-2013-0228

Publisher

:

Emerald Group Publishing Limited

Copyright © 2014, Emerald Group Publishing Limited

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