Journal Published Online: 01 December 2017
Volume 6, Issue 1

Fracture Toughness of Glass Epoxy Laminates Using Carbon Nano Particles and ETBN Rubber



Fiber-reinforced laminated composites have excellent mechanical properties along the fiber in-plane direction. However, they do not have very good properties in the transverse direction. The objective of this research is to deal with this problem by using graphene oxide (GO), plasma-treated multiwall carbon nanotubes, and nanodiamond extra pure powder with epoxy-terminated butadiene nitrile liquid rubber to improve the through-thickness fracture toughness of glass/epoxy unidirectional pre-preg laminates. The experimental results show that by adding carbon nanoparticles with rubber in small quantities, the mode-I interlaminar critical energy release rate can be improved by 50 to 103 %. Furthermore, it was observed that there was an increase in flexural stiffness by 15 % with the addition of nanodiamond extra pure powder to rubber. However, when GO was used, the mode-I interlaminar fracture toughness improvement was reduced as compared to other nanoparticles modified by glass/epoxy fiber laminates. The fracture surfaces were analyzed using scanning electron microscopy to understand the increase in toughness in modified glass epoxy pre-peg laminate system.

Author Information

Shivakumar Gouda, P. S.
Department of Mechanical Engineering, SDM College of Engineering & Technology, VTU, Dharwad, India
Chatterjee, Vijay
Optoelectronics and MOEMS group CSIR-CEERI, Pilani, Rajasthan, India
Department of Polymer Science and Technology, S.J. College of Engineering, VTU, Mysore, India
Barhai, P. K.
Department of Applied Physics, Birla Institute of Technology, Mesra, Ranchi, India
G. B., Veeresh Kumar
Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Bangalore Campus, India
Pages: 12
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Stock #: MPC20170027
ISSN: 2379-1365
DOI: 10.1520/MPC20170027