Title: Damage and Failure Behavior of Lightweight Multifunctional Hybrid Structures under High Velocity Impact Loading Conditions

Authors: Germán Reyes-Villanueva, Prakash Mallik Pariti

DOI: 10.33599/nasampe/s.22.0844

Abstract: Recently, lightweight multifunctional hybrid systems have been manufactured using low density metallic foams bonded to thermoplastic polymer matrix composites and fiber-metal laminates. These systems have shown to offer a number interesting properties such as high stiffness, vibration and sound dampening, energy absorbing characteristics under quasi- static and low velocity loading conditions, etc., and could be used in a wide range of engineering applications. In this study, the high velocity impact behavior of such lightweight systems was investigated using a high speed pneumatic testing system. The hybrid structures consisted of thermoplastic-based Fiber-Metal Laminate (FML) skins thermoplastically bonded to a metallic foam core. Here, 10 and 20 mm thick closed cell aluminum foam cores with a density of 240 kg/m3 were used. Short beams were simply supported and loaded under three point bend loading conditions at a speed of approximately 10 m/s. Experimental data was obtained by using a dynamic test set up that included high speed digital imagery. Damage evolution and failure mechanisms were revealed under high velocity impact loading conditions. Here, it was shown that the excellent level of adhesion between the skin and core materials is retained at dynamic rates of loading and that these structures offer excellent energy absorbing characteristics and structural integrity when subjected to high velocity impact loading conditions.

References: 1. Amigo V., Salvador M.D., Romero F., Solves C., Moreno J.F., Microstructural Evolution Of Ti–6Al–4V During The Sintering Of Microspheres Of Ti For Orthopedic Implants, Journal Of Materials Processing Technology 141 (2003) 117. 2. Ashby M.F., Brechet Y.J.M., Designing Hybrid Materials, Acta Materialia, 51 (2003) 5801. 3. Gibson L.J., Biomechanics Of Cellular Solids, Journal Of Biomechanics 38 (2005) 377. 4. Gibson L.J., Ashby M.F., Cellular Solids: Structure And Properties, Second Ed. Cambridge University Press, Cambridge (1997). 5. Ashby M.F., Evans A., Fleck N.A., Hutchinson L.J., Wadley H.N.G., “Metal Foams, A Design Guide,” Butterworth-Heinemann, USA, 2000. 6. Allen H.G., Analysis And Design Of Structural Sandwich Panels, Pergamon, New York, 1969. 7. Harte A-M., Fleck N.A., Ashby M.F., Sandwich Panel Design Using Aluminum Alloy Foam, Advanced Engineering Materials., 2 (4), (2000) 219-222. 8. Mccormack T.M., Miller R., Kesler O., Gibson L.G., Failure Of Sandwich Beams With Metallic Foam Cores, International Journal Of Solids And Structures, 38, (2001) 4901-4920. 9. Kesler O., Gibson L.J., Size Effects In Metallic Foam Core Sandwich Beams, Materials Science And Engineering, A326, (2002) 228-234. 10. Yu J.L., Wang X., Wei Z.G., Wang E.H., Deformation And Failure Mechanism Of Dynamically Loaded Sandwich Beams With Aluminum-Foam Core, International Journal Of Impact Engineering, 28, (2003) 331-347. 11. Chen C., Harte A.M., Fleck N.A., The Plastic Collapse Of Sandwich Beams With A Metallic Foam Core, International Journal Of Mechanical Sciences, 43, (2001): 1483-1506. 12. Gama B.A., Bogetti T.A., Fink B.K., Yu C.J., Claar T.D., Eifert H.H., Gillespie Jr. J.W., “Aluminum Foam Integral Armor: A New Dimension In Armor Design,” Composite Structures, 52, (2001): 381-395. 13. Cantwell, W.J., Compston, P., Reyes, G., The Fracture Properties Of Novel Aluminium Foam Sandwich Structures, Journal Of Materials Science Letters, 19 (2000): 2205. 14. Reyes Villanueva, G., Cantwell, W.J., The Fracture Properties Of Lightweight Fiber-Reinforced Aluminum Foam Sandwich Structures, Proceedings Of The 16th Annual Technical Conference Of The ASC, Blacksburg, VA, USA (2001). 15. Reyes Villanueva, G., Cantwell, W.J., Low Velocity Impact Response Of Novel Fibre-Reinforced Aluminium Foam Sandwich Structures, Journal Of Materials Science Letters, 22 (2003): 417. 16. Reyes Villanueva, G., Cantwell, W.J., The High Velocity Impact Response Of Composite And FML-Reinforced Aluminium Foam Sandwich Structures, Composites Science And Technology, 64 (2004): 35. 17. Hazizan, A., Kiratisaevee, H., Reyes-Villanueva, G., Cantwell, W.J., The Impact Response Of An Aluminium Honeycomb And Aluminium Foam Sandwich Structures, Proceedings Of The 4th International Materials Technology Conference And Exhibition, Kuala Lumpur, Malaysia (2004). 18. Reyes, G., Mechanical Behavior Of Thermoplastic FML-Reinforced Sandwich Panels Using An Aluminum Foam Core: Experiments And Modeling. Journal Of Sandwich Structures And Materials 12 (2010): 81-96

Conference: SAMPE 2022

Publication Date: 2022/05/23

SKU: TP22-0000000844

Pages: 10

Price: $20.00