An Experimental Investigation of Fracture Toughness and Volume Resistivity of Symmetric Laminated Epoxy/Glass Fiber/CNT multiscale composites

Autor:	Joyal Joesph, Mahadevan Lakshmanan, Karingamanna Jayanarayanan
Rok vydání:	2019
Předmět:	Materials science Fracture toughness Electrical resistivity and conductivity visual_art Glass fiber visual_art.visual_art_medium Epoxy Composite material
Zdroj:	IOP Conference Series: Materials Science and Engineering. 577:012030
ISSN:	1757-899X 1757-8981
Popis:	In this work an attempt is made to improve the fracture toughness and electrical conductivity of epoxy/glass fiber based laminates by the inclusion of carbon nanotube (CNT) fillers. The fiber orientation of the epoxy/glass fiber (GF) fabric laminates was optimized based on estimation of mechanical properties. The carboxylic acid functionalized CNTs were incorporated into epoxy matrix by ultra-sonication method. The nano filled epoxy resin was used to prepare laminates with 30/45 GF fabric orientation. The CNT content was varied and its effect on the tensile properties was determined. The fracture toughness of multiphase composites was estimated using single edge notch bend (SENB) test. The presence of CNTs improved the fracture toughness by a crack bridging mechanism. The volume resistivity of multiphase composites was found to be superior to the conventional epoxy/CNT composite. The presence of glass fabric reduces the number of inter-tube contacts contributing to the reduction in volume resistivity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::69cee80a21faf0d2db84038424aa7dc2 https://doi.org/10.1088/1757-899x/577/1/012030 Zobrazit plný text záznamu