Interlaminar Fracture toughness in Glass-Cellulose Reinforced Epoxy hybrid composites

International Conference on Advances in Materials and Manufacturing Applications 2016

Uppin, Vinayak S.^1 ; Ashok^1 ; Ananthjoshi^2 ; Sridhar, I.^1 ; Shivakumar Gouda, P.S.^1

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

Department of Mechanical Engineering, KLS VDRIT, Visvesvaraya Technological University, Haliyal, Belagavi, India^2

关键词: Crack initiation and propagation;    Critical energy;    Critical energy release rate;    Fiber bridging;    Glass epoxy;    Glass-epoxy composites;    Hybrid composites;    Interlaminar fracture toughness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012113/pdf
DOI  :  10.1088/1757-899X/149/1/012113

来源: IOP

【 摘 要 】

Laminates of fibre reinforced compositesare weak in through thicknessbut strong in fibre direction, this lead to development of hybridizationconcept in polymer composites. In this work a new method of disperssing cellulose micro particleson unidirectional (UD) Glass fibre epoxy composite using semi-automated draw down coating technique was adopted to enhance fracture toughness.Test results show that by adding cellulose increases the load carrying competency by 32% in mode-I as compare to Glass- Epoxy composite samples. Imrovement in interlaminar critical energy release rates (GiCand GnC) up to 55% in Mode -I and 19 %in Mode -II respectively was also observed. This enahancement in fracture toughnees is due to the amount of fiber bridging seen during crack initiation and propagation.