Analysis of the mechanical performance of pin-reinforced sandwich structures
Mohamed Adli Dimassi
Diese Publikation zitieren
Mohamed Adli Dimassi, Analysis of the mechanical performance of pin-reinforced sandwich structures (2019), Logos Verlag, Berlin, ISBN: 9783832588267
4
Accesses
Accesses
Beschreibung / Abstract
The rising demand to reduce fuel consumption and the continuous increase of materials and manufacturing costs has obliged aircraft manufacturers to boost the use of composite materials and to optimise the manufacturing methods. Foam core sandwich structures combine the advantages of high bending properties with low manufacturing costs when liquid composite processes are used. However, the use of foam core sandwich structures is not widespread in aircraft applications due to the better weight-specific performance of honeycomb cores and the susceptibility to impact loading. In this context, pin reinforcements are added to the foam core to improve its mechanical properties and its damage tolerance.
This work contributes to the understanding of the mechanical behaviour of pin-reinforced foam core sandwich structures under static and impact loading. Ultrasonic scan and micro-computed tomography are used to identify the different damage modes. The effect of very low temperature on the damage behaviour under impact loading is investigated. An explicit simulation model to predict the impact response of pin-reinforced foam core sandwich structures is also proposed.
This work contributes to the understanding of the mechanical behaviour of pin-reinforced foam core sandwich structures under static and impact loading. Ultrasonic scan and micro-computed tomography are used to identify the different damage modes. The effect of very low temperature on the damage behaviour under impact loading is investigated. An explicit simulation model to predict the impact response of pin-reinforced foam core sandwich structures is also proposed.
Inhaltsverzeichnis
- BEGINN
- Acknowledgements
- Abstract
- Kurzfassung
- Publications
- Table of contents
- Catalogue of symbols used
- 1 Introduction
- 1.1 Motivation
- 1.2 Objective
- 1.3 Structure of the work
- 2 State of the art
- 2.1 Fundamentals of composite sandwich structures
- 2.2 Through-the-thickness reinforcement of foam core sandwich structures
- 2.3 Impact behaviour of foam core sandwich structures
- 2.4 Chapter summary
- 3 Experimental characterisation of the Tied Foam Core-sandwich structure
- 3.1 Materials and manufacturing
- 3.2 Tested TFC-configurations
- 3.3 Damage analysis with X-ray computed tomography
- 3.4 Flatwise compression test
- 3.5 Out-of-plane shear test
- 3.6 TFC-sandwich indentation test
- 3.7 Core indentation test
- 3.8 Chapter summary
- 4 Experimental analysis of the impact response of TFC-sandwich at low temperature
- 4.1 Literature review
- 4.2 Low-velocity impact: test set-up
- 4.3 Results and discussion
- 4.4 Chapter summary
- 5 Numerical simulation of impact on TFC-sandwich structure
- 5.1 Fundamentals of explicit simulation
- 5.2 Numerical simulation of impact on a curved foam core sandwich shell for aerospace application
- 5.3 Numerical simulation of impact on TFC-sandwich structure
- 5.4 Chapter summary
- 6 Summary and outlook
- References
- List of figures
- List of tables
- A Appendix