Optimisation of Mechanical Properties in Saw-Dust/Woven-Jute Fibre/Polyester Structural Composites under Liquid Nitrogen Environment Using Response Surface Methodology

Polymers

Velmurugan Ganesan¹  Yoganandam Krishnamoorthy²  Sekar Sanjeevi³  Seyed Mohammad Javad Razavi⁴  Vasudevan Alagumalai⁵  Vigneshwaran Shanmugam⁵  Babu Kaliyamoorthy⁶  Suresh Kumar Shanmugam⁷  Michael Försth⁸  Oisik Das⁸  Gabriel Sas⁸ 

[1] Department of Agricultural Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, India;Department of Mechanical Engineering, ARM College of Engineering and Technology, Chennai 602105, India;Department of Mechanical Engineering, Hindusthan Institute of Technology, Coimbatore 641028, India;Department of Mechanical Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway;Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, India;Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai 603110, India;Faculty of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil 626128, India;Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden;

关键词: jute;    structural composites;    Taguchi;    response-surface methodology;   

DOI  :  10.3390/polym13152471

来源: DOAJ

【 摘 要 】

Natural fibre-based composites are replacing traditional materials in a wide range of structural applications that are used in different environments. Natural fibres suffer from thermal shocks, which affects the use of these composites in cold environment. Considering these, a goal was set in the present research to investigate the impact of cryogenic conditions on natural fibre composites. Composites were developed using polyester as matrix and jute-fibre and waste Teak saw-dust as reinforcement and filler, respectively. The effects of six parameters, viz., density of saw-dust, weight ratio of saw-dust, grade of woven-jute, number of jute layers, duration of cryogenic treatment of composite and duration of alkaline treatment of fibres on the mechanical properties of the composite was evaluated with an objective to maximise hardness, tensile, impact and flexural strengths. Taguchi method was used to design the experiments and response-surface methodology was used to model, predict and plot interactive surface plots. Results indicated that the duration of cryogenic treatment had a significant effect on mechanical properties, which was better only up to 60 min. The models were found to be statistically significant. The study concluded that saw-dust of density 300 kg/m³ used as a filler with a weight ratio of 13 wt.% and a reinforcement of a single layer of woven-jute-fibre mat of grade 250 gsm subjected to alkaline treatment for 4 h in a composite that has undergone 45 min of cryogenic treatment presented an improvement of 64% in impact strength, ca. 21% in flexural strength, ca. 158% in tensile strength and ca. 28% in hardness.

【 授权许可】

Unknown