Effect of Fibre Orientation on Specific Gravity, Hardness, Flexural Strength and Tensile Properties of Jute/Hemp Hybrid Laminate Composite

2015 ◽  
Vol 766-767 ◽  
pp. 75-78 ◽  
Author(s):  
Akash ◽  
K.Chikkanna Anil ◽  
K.G. Girisha ◽  
K.V. Sreenivas Rao

Bio-composites are taking over the polymer based composites due to their multi fold advantages. In this work, the natural fibre (jute-hemp) hybrid composite was prepared by traditional hand-lay-up method. The hardness, tensile and flexural properties of the composite specimen was evaluated in order to study the effect of fibres and fibre orientations using standard procedures. A significant improvement in hardness (114RHN), tensile (79.13mpa) and flexural (120.06mpa) properties were observed with fibre orientation of 900 compare to 300 & 450 orientations. Specific gravity test were conducted by using ASTM D792 standard at the temperature of 230c. The specific gravity was found to increase for 900 orientation of the fibre in the composite. It is also observed that the polyester based hybrid composite exhibits higher values of mechanical properties compared to epoxy based hybrid composites.


Author(s):  
Nadeem Ahmed Nasimudeen ◽  
Sharwine Karounamourthy ◽  
Joshua Selvarathinam ◽  
Senthil Muthu Kumar Thiagamani ◽  
Harikrishnan Pulikkalparambil ◽  
...  

Natural fibres such as Banana (B), Jute (J) and Kenaf (K) were hybridized in different stacking sequences in vinyl ester. The composites with hybridized fibres were tested to evaluate their tensile, flexural and impact properties. Further, they were also tested for their water absorption and thickness swelling behavior. The hybridization of the fibre mats had an encouraging outcome on the mechanical behavior. The JKBKBJ hybrid composite possessed the maximum tensile strength (34.12 MPa) while maximum stiffness of 1.667 GPa was observed for the KBJJBK hybrid composites. The observations from the flexural testing indicated that the hybrid composites resisted the flexural load for higher displacement. All the hybrid configurations presented better impact strength over the composites reinforced with kenaf and jute fibres. Among the hybrid composites investigated, the KJBBJK hybrid composite displayed highest impact strength (12.32 kJ/m2). The improved strength, stiffness and lower moisture absorption properties make the composites with hybridized fibres a potential candidate for the light weight structural applications.



Phenolic based PALF/nanoclay hybrid composites was prepared by adding Montmorillonite (MMT) as filler at different loading (1%, 2% and 3%) by using hot press technique. Obtained results indicated that adding MMT in PALF/phenolic composites considerably improves the tensile and flexural strength and modulus. Tensile properties showed that the tensile strength increased after adding MMT though tensile modulus decreased. Flexural strength and modulus were enhanced after adding MMT up to 2%, further addition of MMT declined the properties. 2% MMT showed better tensile and flexural properties. 3% MMT/PALF hybrid composite showed no further improvement in tensile properties after 2% MMT, however the flexural properties were reduced. 3% MMT did not improved much maybe agglomeration accrued. PALF/nanoclay/phenolic hybrid composites revealed good mechanical properties that encourage to use for structural purposes.



2019 ◽  
Vol 895 ◽  
pp. 58-63 ◽  
Author(s):  
R. Rakshith ◽  
Puneeth Parameshwar Bhat ◽  
B. Sandeep

The effect of the fiber orientation of thermosetting polyester resin with carbon and jute fiber-a natural polymer hybrid composite has been investigated by experiments. The tensile, flexural, impact, hardness, specific gravity and three body wear tests. The natural polymer hybrid composite is developed by the traditional method of fabricating the composite i.e. by hand lay-up technique. The proportion by weight of fibers and resin are kept constant, while varying the fiber orientation. The laminates are kept for curing at room temperature condition. Specimens are developed according to ASTM standards. Experimental results showed that hybridization of the composite with natural and synthetic fibers shows enhanced mechanical properties. The content of natural reinforcements is 60% in the developed hybrid composite. The effect of untreated jute placed at different fiber orientation has significant effect on the flexural, impact, hardness and specific gravity properties than tensile properties. The wear property has shown good resistance if the presence of carbon fiber. An overall comparison between the properties of the developed natural polymer hybrid composite revealed that the presence of carbon fiber woven mat on both the sides of the composite has played the critical role by balancing the properties and reducing the overall cost



2020 ◽  
Vol 01 (01) ◽  
pp. 06-10 ◽  
Author(s):  
Mahir Asif ◽  
Kazi Adnan Rahman ◽  
Mohammad Omar Faisal ◽  
Md. Shariful Islam

In this paper, mechanical properties of bamboo strip and bamboo strip-glass fiber reinforced hybrid composite were investigated. Composites were manufactured by using hand lay-up technique and bamboo strips were made from locally available bamboo. Four layers of bamboo strip composite were manufactured and in case of hybrid composite, two layers of glass fiber one at the top and the other at the bottom were used with the aim was to observe the effect of adding glass fiber layer on the mechanical properties of bamboo strip composite. Tensile and flexural properties were studied and it was found that adding the glass fiber layer doesn’t have any significant effect on tensile properties but flexural strength and modulus have increased by 22.49 % and 15.02 % respectively.



2021 ◽  
Vol 309 ◽  
pp. 01153
Author(s):  
T. Arun Kumar ◽  
B. Sunil ◽  
K. Srividya ◽  
Sd. AbdulKalam ◽  
Ch. Mohan Sumanth

The natural fibre reinforced composites have the advantage of being light weight, renewable, cheap and eco–friendly when compared to the synthetic fibres. So, there is a need to investigate potentiality of natural fibre which can be used in highly demanding situations. An attempt has been made in the present work to explore the possible uses of variety of cultivated and wild grown fibres in nature that aids in the development of new composites for load carrying structures. The present research work has been carried out to make use of okra /sisal natural fibres. The aim of this paper is to describe the experimental development and characterization of new set of hybrid natural fibre composites which is made by reinforcing okra /sisal fibres with polyester resin in matrix by using hand layup method. The natural fibres were extracted by retting and combing process manually. The hybrid composites were prepared using okra/sisal fibres of 30/70, 50/50, 70/30 fibre weight ratios, when subjected to varying weights of fibres (0. 4, 0. 8, 1. 2, 1. 6, 2) grams. The tensileand impact properties were carried out using hybrid composite specimens.



2021 ◽  
Vol 309 ◽  
pp. 01017
Author(s):  
Ankit Dhar Dubey ◽  
Jogendra Kumar ◽  
Shivi Kesarwani ◽  
Rajesh Kumar Verma

The stiffness and reduced weight of polymer composites makes them unique from conventional manufacturing materials. The failure modes can vary from tension to compression dominated with the matrix interface. The mechanical strength can be improved with the stacking of different laminates for the development of hybrid composites. This study highlights the fabrication of laminate composite for flexural tests and analysis for stacking sequences of carbon (C) and glass (G) fiber laminates. The fabrication was performed by a cost-effective hand layup method for laminate polymers to observe changes in the properties of the final composites. This work investigates the cost appraisal of the hybrid composites to replace the existing costly material (neat material). The results of flexural properties and experimental study of low-cost composite materials are present in this paper, which integrates an empirical analysis for manufacturing sectors. The cost-effectiveness of composite manufacturing is determining the best stacking configuration for optimal production cost. The proposed laminate composite can be recommended for structural applications, and the addition of different fabric layers could be helpful for the development of a cost-effective product.



2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sekar Sanjeevi ◽  
Vigneshwaran Shanmugam ◽  
Suresh Kumar ◽  
Velmurugan Ganesan ◽  
Gabriel Sas ◽  
...  

AbstractThis investigation is carried out to understand the effects of water absorption on the mechanical properties of hybrid phenol formaldehyde (PF) composite fabricated with Areca Fine Fibres (AFFs) and Calotropis Gigantea Fibre (CGF). Hybrid CGF/AFF/PF composites were manufactured using the hand layup technique at varying weight percentages of fibre reinforcement (25, 35 and 45%). Hybrid composite having 35 wt.% showed better mechanical properties (tensile strength ca. 59 MPa, flexural strength ca. 73 MPa and impact strength 1.43 kJ/m2) under wet and dry conditions as compared to the other hybrid composites. In general, the inclusion of the fibres enhanced the mechanical properties of neat PF. Increase in the fibre content increased the water absorption, however, after 120 h of immersion, all the composites attained an equilibrium state.



Author(s):  
Tugba Mutuk ◽  
Mevlüt Gürbüz

Abstract This study reports on silicon nitride (Si3N4) and graphene nanoplatelets binary powder reinforced hybrid titanium composites obtained by a powder metallurgy method. Si3N4 powder was added at 3 wt.% and graphene nanoplatelets were added in various amounts (0.15, 0.30, 0.45, 0.60 wt.%) in the titanium matrix. Density, micro-Vickers hardness, compressive behavior, wear properties and microstructure of the hybrid composites were evaluated. Addition of different percentages of graphene nanoplatelets and 3 wt.% Si3N4 to the titanium matrix composites significantly enhanced mechanical properties. The highest hardness (634 HV) and compressive strength (1458 MPa) values were measured for 0.15 wt.% graphene nanoplatelets and 3 wt.% Si3N4 added titanium hybrid composite. The lowest mass loss and wear rate (Δm = 4 mg, W = 6.1×10–5 mm3 (N m)–1) values were measured for the same 0.15 wt.% graphene nanoplatelets and 3 wt.% Si3N4 added titanium hybrid composite compared with pure Ti.



Author(s):  
James W. Giancaspro ◽  
Christos G. Papakonstantinou ◽  
P. N. Balaguru

By far, carbon and glass fibers are the most popular fiber reinforcements for composites. Traditional carbon composites are relatively expensive since the manufacturing process requires significant heat and pressure, while the carbon fibers themselves are inherently expensive to produce. In addition, they are often flammable and their use is restricted when fire is a critical design parameter. Glass fabrics are approximately one order of magnitude less expensive than similar carbon fabrics. However, they lack the stiffness and the durability needed for many high performance applications. By combining these two types of fibers, hybrid composites can be fabricated that are strong, yet relatively inexpensive to produce. The primary objective of this study was to experimentally investigate the effects of bonding high strength carbon fibers to E-glass composite cores using a high temperature, inorganic matrix known as geopolymer. Carbon fibers were bonded to E-glass cores (i) on only the tension face, (ii) on both the tension and compression faces, or (iii) dispersed throughout the core in alternating layers to obtain a strong, yet economical, hybrid composite laminate. For each response measured (flexural capacity, stiffness, and ductility), at least one hybrid configuration displayed mechanical properties comparable to all carbon composite laminates. The results indicate that hybrid composite plates manufactured using 3k unidirectional carbon tape exhibit increases in flexural capacity of approximately 700% over those manufactured using E-glass fibers alone. In general, as the relative amount of carbon fibers increased, the likelihood of precipitating a compression failure also increased. For 92% of the specimens tested, the threshold for obtaining a compression failure was utilizing 30% carbon fibers. The results presented herein can dictate future studies to optimize hybrid performance and to achieve economical configurations for a given set of design requirements.



2021 ◽  
Vol 2089 (1) ◽  
pp. 012033
Author(s):  
M Sadashiva ◽  
S Praveen Kumar ◽  
M K Yathish ◽  
V T Satish ◽  
MR Srinivasa ◽  
...  

Abstract The extensive applications of hybrid composite materials in the field of transportation and structural domine provide prominent advantages in the order of stiffness, strength even cost. However extend the advantages of hybrid campsites in several field such as aviation and marine even more additional properties should be inculcate in them. During production of such profitable composites poses some problems at time at decompose and processing. It’s better to develop environment friendly and reusable composites, bio hybrid composite materials such of the one. In this paper, focused on development of Eco-friendly hybrid bio composites with the ingredients of drumstick fibers, glass fiber along with polyester resin. This hybrid bio composites subjected to bending test and evaluate the characteristics of bending properties, this research evident that bending characteristics of hybrid composites with longitudinal fiber orientation better than transverse.



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