LOW VELOCITY IMPACT BEHAVIOUR OF CARBON/XPS SANDWICH COMPOSITES

This work presents drop-weight impact properties of carbon fabric/extruded-polystyrene (XPS) sandwich composites reinforced with different ratios of carbon nanotubes (CNT). Sandwich composites were infused with epoxy resin containing 0.5% and 1% CNT during the manufacturing. The sandwich composites were impacted with 10J, 30J and 50J energies to compare their impact resistance and energy absorption properties. Impact test results showed that sandwich composites with CNT had higher energy absorption and deformation values with lower maximum loads compared to neat sandwich composite at 10J impact energy. However, neat sandwich composites had both higher energy absorption and maximum load than sandwich composites with CNT’s due to more severe impact damages and higher dent depths at 50J.

KARBON/XPS SANDVİÇ KOMPOZİTLERİN DÜŞÜK HIZDAKİ DARBELERE KARŞI DAVRANIŞI

Bu çalışma, farklı oranlarda karbon nanotüp (CNT) ile güçlendirilmiş karbon kumaş/ekstrüde-polistiren (XPS) sandviç kompozitlerin düşük ağırlıklı darbe dayanımı özelliklerini sunmaktadır. Sandviç kompozitler, üretim sırasında %0,5 ve % 1 CNT içeren epoksi reçinesi ile infüzyon edilmiştir. Sandviç kompozitler 10J, 30J ve 50J enerjilere maruz kalarak darbe dayanımları ve enerji absorpsiyonları karşılaştırılmıştır. Darbe testi sonuçlarına göre CNT’li sandviç kompozitler 10J darbe enerjisinde, CNT içermeyen sandviç kompozitlere göre daha fazla enerji absorpsiyonu ve deformasyon değerlerine sahipken daha düşük maksimum yük değerleri göstermiştir. Ancak, 50J darbe enerjisinde CNT içermeyen sandviç kompozitler daha fazla darbe hasarı ve darbe derinliğine sahip olmalarından dolayı, CNT içeren sandviç kompozitlere göre daha yüksek enerji absorpsiyonun ve maksimum yük değerleri göstermiştir.

PDF

___

1. Xia, F. and X.-q. Wu, (2010), Study on impact properties of through-thickness stitched foam sandwich composites, Composite Structures, 92(2): p. 412-421.

2. Walsh, J., H.-I. Kim, and J. Suhr, (2017), Low velocity impact resistance and energy absorption of environmentally friendly expanded cork core-carbon fiber sandwich composites, Composites Part A: Applied Science and Manufacturing, 101: p. 290-296.

3. Selver, E. and G. Kaya, (2019), Flexural properties of sandwich composite laminates reinforced with glass and carbon Z-pins, Journal of Composite Materials, 53(10): p. 1347-1359.

4. Chen, Y., et al., (2017), Low-velocity impact response of composite sandwich structures: Modelling and experiment, Composite Structures, 168: p. 322-334.

5. Henao, A., et al., (2015), Enhanced Impact Energy Absorption Characteristics of Sandwich Composites through Tufting, Mechanics of Advanced Materials and Structures, 22(12): p. 1016-1023.

6. Potluri, P., E. Kusak, and T.Y. Reddy, (2003), Novel stitch-bonded sandwich composite structures, Composite Structures, 59(2): p. 251-259.

7. Lascoup, B., et al., (2010), Impact response of three-dimensional stitched sandwich composite, Composite Structures, 92(2): p. 347-353.

8. Kaya, G. and E. Selver, (2019), Impact resistance of Z-pin-reinforced sandwich composites, Journal of Composite Materials, 53(26-27): p. 3681-3699.

9. Santhanakrishnan, R., et al., (2018), Impact study on sandwich panels with and without stitching, Advanced Composite Materials, 27(2): p. 163-182.

10. Henao, A., et al., (2015), Enhanced Impact Energy Absorption Characteristics of Sandwich Composites through Tufting, Mechanics of Advanced Materials and Structures, 22(12): p. 1016-1023.

11. Rawat, P. and K.K. Singh, (2017), Damage Tolerance of Carbon Fiber Woven Composite Doped with MWCNTs under Low-velocity Impact, Procedia Engineering, 173: p. 440-446.

12. Suhr, J. and N.A. Koratkar, (2008), Energy dissipation in carbon nanotube composites: a review, Journal of Materials Science, 43(13): p. 4370-4382.

13. Tehrani, M., et al., (2013), Mechanical characterization and impact damage assessment of a woven carbon fiber reinforced carbon nanotube-epoxy composite, Composites Science and Technology, 75: p. 42-48.

14. Soliman, E., M. Al-Haik, and M.R. Taha, (2012), On and off-axis tension behavior of fiber reinforced polymer composites incorporating multi-walled carbon nanotubes, Journal of Composite Materials, 46(14): p. 1661-1675.

15. Soliman, E.M., M.P. Sheyka, and M.R. Taha, (2012), Low-velocity impact of thin woven carbon fabric composites incorporating multi-walled carbon nanotubes, International Journal of Impact Engineering, 47: p. 39-47.

16. Kostopoulos, V., et al., (2010), Impact and after-impact properties of carbon fibre reinforced composites enhanced with multi-wall carbon nanotubes, Composites Science and Technology, 70(4): p. 553-563.

17. Caglayan, C., et al., (2018), The effect of CNT-reinforced polyurethane foam cores to flexural properties of sandwich composites, Composites Part A: Applied Science and Manufacturing, 115: p. 187-195.

18. Patra, A.K. and N. Mitra, (2018), Mixed-mode fracture of sandwich composites: Performance improvement with multiwalled carbon nanotube sonicated resin, 20(3): p. 379-395.