Investigation on pseudo-ductility to improve mechanical behavior in glass-cellulose epoxy composites

International Conference on Advances in Materials and Manufacturing Applications 2016

Ashok^1 ; Uppin, Vinayak S.^1 ; Huddar, Deepak S.^2 ; Kodancha, Krishanaraj G.^3 ; Sridhar, I.^1 ; Shivakumar Gouda, P.S.^1

Department of Mechanical Engineering, SDMCET, Visvesvaraya Technological University, Belagavi, Dharwad, India^1

Department of Mechanical Engineering, ACET, Visvesvaraya Technological University, Belagavi, India^2

School of Mechanical Engineering, KLE's Technological University, Hubballi, India^3

关键词: Catastrophic failures;    Epoxy;    Glass-epoxy laminates;    Inter-laminar shear strengths;    Mechanical behavior;    Non-linear variation;    Surface coatings;    Tensile stress strain;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012112/pdf
DOI  :  10.1088/1757-899X/149/1/012112

来源: IOP

【 摘 要 】

Nowadays composite materials exhibit sudden and catastrophic failure, which is undesirable for several applications. A new class of hybrid laminates was prepared using semi-automated draw down coating method with varying surface coating densities on unidirectional (UD) Glass fiber. Cellulose particles were coated on UD Glass fiber to investigate the effect of pseudo-ductility to improve mechanical behavior. Glass Cellulose epoxy hybrid laminate was fabricated with 5%, 7.5% and 10% of cellulose. Coating with 5% Cellulose produces a coating density of 319.08 g/m2and exhibits the appreciable pseudo ductile tensile stress-strain behavior with a non-linear variation at second part followed by linear variation at initial region. The response of tensile stress had shown 27% improvement in tensile modulus (330MPa) as compared to neat glass epoxy laminate with 0.04% of pseudo ductile strain. Further, flexural strength and inter-laminar shear strength of each specimen configuration were calculated and found good improvement in flexural strength with cellulose coated samples as compared to Glass-Epoxy laminate.