scholarly journals Experimental Investigation on the Mechanical Properties of a Sandwich Structure Made of Flax/Glass Hybrid Composite Facesheet and Honeycomb Core

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
W. Ashraf ◽  
M. R. Ishak ◽  
M. Y. M. Zuhri ◽  
N. Yidris ◽  
A. M. Ya’acob
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Sandwich Structure ◽  
Volume Fraction ◽  
Sandwich Structures ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Glass Composite ◽  
Composite Sandwich ◽  
Synthetic Materials

This research is aimed at developing the sandwich structure with a hybrid composite facesheet and investigate its mechanical properties (tensile, edgewise compression, and flexural). The combination of renewable and synthetic materials appears to reduce the weight, cost, and environmental impact compared to pure synthetic materials. The hybrid composite facesheets were fabricated with different ratios and stacking sequence of flax and glass fibers. The nonhybrid flax and glass composite facesheet sandwich structures were fabricated for comparison. The overall mechanical performance of the sandwich structures was improved by increasing the glass fiber ratio in the hybrid composites. The experimental tensile properties of the hybrid facesheet and the edgewise compression strength and ultimate flexural facing stress of the hybrid composites sandwich structures were achieved higher when the results were normalized to the same fiber volume fraction of glass composite. The hybrid composite sandwich structure showed improved compression and flexural facing stress up to 68% and 75%, respectively, compared to nonhybrid flax composites. The hybrid composite using glass in the outer layer achieved the similar flexural stiffness of the nonhybrid glass composite with only a 6% higher thickness than the glass composite sandwich structure.

scholarly journals Mechanical Properties of Abaca–Glass Fiber Composites Fabricated by Vacuum-Assisted Resin Transfer Method

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2719
Author(s):  
Marissa A. Paglicawan ◽  
Carlo S. Emolaga ◽  
Johanna Marie B. Sudayon ◽  
Kenneth B. Tria
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Fiber Composites ◽  
Failure Behavior ◽  
Glass Fiber Composites ◽  
Transfer Method

The application of natural fiber-reinforced composites is gaining interest in the automotive, aerospace, construction, and marine fields due to its advantages of being environmentally friendly and lightweight, having a low cost, and having a lower energy consumption during production. The incorporation of natural fibers with glass fiber hybrid composites may lead to some engineering and industrial applications. In this study, abaca/glass fiber composites were prepared using the vacuum-assisted resin transfer method (VARTM). The effect of different lamination stacking sequences of abaca–glass fibers on the tensile, flexural, and impact properties was evaluated. The morphological failure behavior of the fractured-tensile property was evaluated by 3D X-ray Computed Tomography and Scanning Electron Microscopy (SEM). The results of mechanical properties were mainly dependent on the volume fraction of abaca fibers, glass fibers, and the arrangement of stacking sequences in the laminates. The higher volume fraction of abaca fiber resulted in a decrease in mechanical properties causing fiber fracture, resin cracking, and fiber pullout due to poor bonding between the fibers and the matrix. The addition of glass woven roving in the composites increased the mechanical properties despite the occurrence of severe delamination between the abaca–strand mat glass fiber.

scholarly journals Mechanical Behaviour of Palm Fiber (Palmyra Spout) – Basalt Fiber - Hybrid Composites

2019 ◽  
Vol 9 (1) ◽  
pp. 1064-1070
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Basalt Fiber ◽  
Weight Ratio ◽  
Test Sample ◽  
Palm Fiber ◽  
Molding Method

: In general the natural fibers are taken out from the sources of animals and plants. In recent days the natural fibers play an important role in engineering applications like automotive, aerospace and marine industries due to abundant availability, less in cost and zero percentage environment harmless in nature. In this paper the investigation of various mechanical properties of hybrid reinforced composite (Palm fiber Basalt S-glass fiber) is been done on the fabricated samples. The different mechanical property includes tensile, hardness and impact tests etc... The fabrication comprises three layers of Palm and Basalt fibers outer laminated by two layers of S-glass fibers using injection molding method. From the various testing and investigation against the test sample it is been concluded that the fibers in the hybrid set took a major role in determining the important mechanical properties. Thus the fibers present in the hybrid composite increases the strength, stiffness and weight ratio of the composite materials. The various forms and structural analysis of the hybrid composite material are processed by using scanning electron microscope for attaining the better results and application basis

scholarly journals Effect of Variations in Microwave Processing Temperatures on Microstructural and Mechanical Properties of AA7075/SiC/Graphite Hybrid Composite Fabricated by Powder Metallurgy Techniques

2021 ◽  
Author(s):  
Manohar Guttikonda ◽  
K M Pandey ◽  
S R Maity
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
High Performance ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Microwave Sintering ◽  
Modern World ◽  
Matrix Composites ◽  
Average Grain Size ◽  
Selection Of

Abstract Due to the demand in present industrial, aerospace, defense sectors for lightweight high-performance aluminum (Al) particle-reinforced metal matrix composites, the advancement of techniques to fabricate these composites with superior mechanical properties have gained technological interest in the modern world. In this direction, SiC and graphite reinforced AA7075 matrix composite material has been fabricated in this study, through hybrid microwave sintering techniques. The microwave sintering temperatures for the optimized volume fraction composition of AA7075/SiC/graphite hybrid composite has been varied from 400 to 550 ℃ with a step value of 50 ℃. The obtained results showed a superior improvement in the mechanical properties for microwave sintered composites as compared to the conventionally sintered composites. Mechanical properties are found to show increasing trend with increasing microwave sintering temperatures up to 500 ℃, after that, a downfall is observed in their mechanical properties, which can be attributed to the increased average grain size of the composite at 550 ℃. Selection of SiC as primary reinforcement material helped in achieving high mechanical strengths, and through microwave sintering, an increment of 37.2% in tensile, 26.6% in compression, and 16.5% in hardness is achieved. From this investigation, it is also observed that the selection of materials that shows high response to microwaves helps in achieving the enhanced mechanical properties for the hybrid composites processed by microwave sintering techniques.

Flexural and Impact Properties of Kenaf-Glass Hybrid Composite

2012 ◽  
Vol 576 ◽  
pp. 471-474 ◽  
Author(s):  
Md Abdul Maleque ◽  
Atiqah Afdzaluddin ◽  
Mohammed Iqbal
Keyword(s):  
Hybrid Composite ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Unsaturated Polyester ◽  
Glass Fibers ◽  
Mechanical Tests ◽  
Fiber Reinforced ◽  
Green Composite ◽  
Impact Properties ◽  
Structural Applications

This paper investigates the flexural and impact properties of kenaf-glass (KG) fibers reinforced unsaturated polyester (UPE) hybrid composite on a source of green composite. The matrix is kept constant with 70 % volume fraction while kenaf and glass fibers were varied, such as 7.5/22.5 v/v, 15/15 v/v and 22.5/7.5 v/v. The 30 % kenaf and 30 % glass are also used for the preparation of composite materials. The kenaf fiber was treated with 6% sodium hydroxide (NaOH) diluted solution for 3 hours. Hybrid composites are fabricated using sheet molding compound (SMC) process. The mechanical tests, such as flexural and impact are performed using ASTM D790-03 and ASTM D256-04 respectively. The study showed that the highest flexural strength was obtained from treated kenaf with 15/15 v/v KG fiber reinforced hybrid composite while untreated of 15/15 v/v KG composite showed the highest value of impact strength in this investigation. This can be concluded that 15/15 v/v KG fiber reinforced unsaturated polyester hybrid composite is the most appropriate hybrid composite which can be considered for many engineering structural applications, such as automotive, aerospace, construction or sports.

scholarly journals Characterization of Hemp/Glass Reinforced Epoxy Hybrid Composites with Filler Material for the Engineering Application

2020 ◽  
Vol 8 (6) ◽  
pp. 4570-4575
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Matrix Material ◽  
Engineering Application ◽  
Filler Material ◽  
Hemp Fiber ◽  
The Matrix ◽  
Alternative Material

Cenosphere is a powder form material obtained by burning of coal in thermal plants. This industrial waste is ceramic rich, economically available and as filler material has the potential to improve properties of Composites. This work deals with the effect of cenosphere as filler material on mechanical properties of the Hemp/Glass Reinforced Epoxy Hybrid Composites. Industrial hemp fiber/fabric, which is produced by the bast of the hemp tree, is used along with Glass fibers in this hybrid composite with cenosphere as a filler material and epoxy as the matrix material. Hand layup technique is used to develop composite specimens with various weight fractions. Composite specimen prepared as per relevant ASTM standards were tested for their mechanical properties to establish the influence of cenosphere and glass fabrics in the laminates with Hemp fabrics. It has found that some of the properties of hybrid composite samples are significantly increased by the influence of filler material. This hybrid composite can be used as alternative material to plastics used in automobile mudguard.

scholarly journals The energy absorption behavior of novel composite sandwich structures reinforced with trapezoidal latticed webs

2021 ◽  
Vol 60 (1) ◽  
pp. 503-518
Author(s):  
Juan Han ◽  
Lu Zhu ◽  
Hai Fang ◽  
Jian Wang ◽  
Peng Wu
Keyword(s):  
Bearing Capacity ◽  
Energy Absorption ◽  
Sandwich Structure ◽  
Ultimate Load ◽  
Sandwich Structures ◽  
Elastic Displacement ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Composite Sandwich ◽  
Composite Sandwich Structures

Abstract This article proposed an innovative composite sandwich structure reinforced with trapezoidal latticed webs with angles of 45°, 60° and 75°. Four specimens were conducted according to quasi-static compression methods to investigate the compressive behavior of the novel composite structures. The experimental results indicated that the specimen with 45° trapezoidal latticed webs showed the most excellent energy absorption ability, which was about 2.5 times of the structures with vertical latticed webs. Compared to the traditional composite sandwich structure, the elastic displacement and ultimate load-bearing capacity of the specimen with 45° trapezoidal latticed webs were increased by 624.1 and 439.8%, respectively. Numerical analysis of the composite sandwich structures was carried out by using a nonlinear explicit finite element (FE) software ANSYS/LS-DYNA. The influence of the thickness of face sheets, lattice webs and foam density on the elastic ultimate load-bearing capacity, the elastic displacement and initial stiffness was analyzed. This innovative composite bumper device for bridge pier protection against ship collision was simulated to verify its performance. The results showed that the peak impact force of the composite anti-collision device with 45° trapezoidal latticed webs would be reduced by 17.3%, and the time duration will be prolonged by about 31.1%.

Assessing of Mechanical Properties of Natural Fiber Reinforced Polymer Matrix Hybrid Composites

2015 ◽  
Vol 766-767 ◽  
pp. 199-204 ◽  
Author(s):  
Kumar Jayachandran Nirmal ◽  
D. Premkumar
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Natural Fibres ◽  
Fiber Reinforced Polymer ◽  
Resin Matrix ◽  
Reinforced Polymer ◽  
Individual Type

An experimental analysis has been carried out to investigate the mechanical properties of composites reinforced by sisal, coir, and banana fibres into epoxy resin matrix. The natural fibres were extracted by retting and manual processes. The composites fabricated by epoxy resin and reinforcement in the hybrid combination of Sisal-Banana and Sisal-Coir with the volume fraction of fibres varying from 5% to 30%. It has been identified that the mechanical properties increase with the increase of volume fraction of fibres to a certain extent and then decreases. The hybridization of the reinforcement in the composite shows greater mechanical properties when compared to individual type of natural fibres reinforced. For all the composites tested, the tensile strength of the composite increased up to 25% of volume fraction of the fibres and further for the increase in the volume fraction of fibre the mechanical properties were decreased. As same as tensile properties, the flexural and impact strength also increased linearly up to 25% of volume fraction of fibres and further for the increase in the volume fraction of fibre the mechanical properties were slightly decreased. Key Words: Sisal, Banana, Coir, Epoxy, Hybrid composite.

Flexural Response of Inorganic Hybrid Composites With E-Glass and Carbon Fibers

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
James W. Giancaspro ◽  
Christos G. Papakonstantinou ◽  
P. N. Balaguru
Keyword(s):  
Carbon Fibers ◽  
Hybrid Composite ◽  
Composite Laminates ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Composite Plates ◽  
Carbon Composite ◽  
Primary Objective ◽  
Flexural Capacity ◽  
Compression Failure

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.

scholarly journals Influence of Glass Fibers on Mechanical Properties of Concrete with Recycled Coarse Aggregates

2019 ◽  
Vol 5 (5) ◽  
pp. 1007-1019 ◽  
Author(s):  
Babar Ali ◽  
Liaqat Ali Qureshi ◽  
Ali Raza ◽  
Muhammad Asad Nawaz ◽  
Safi Ur Rehman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Mechanical Performance ◽  
Volume Fraction ◽  
Glass Fibers ◽  
Construction Material ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Highly Sensitive

Despite plain cement concrete presenting inferior performance in tension and adverse environmental impacts, it is the most widely used construction material in the world. Consumption of fibers and recycled coarse aggregates (RCA) can add ductility and sustainability to concrete. In this research, two mix series (100%NCA, and 100%RCA) were prepared using four different dosages of GF (0%GF, 0.25%GF, 0.5%GF, and 0.75%GF by volume fraction).  Mechanical properties namely compressive strength, splitting tensile strength, and flexural strength of each concrete mixture was evaluated at the age of 28 days. The results of testing indicated that the addition of GF was very useful in enhancing the split tensile and flexural strength of both RCA and NCA concrete. Compressive strength was not highly sensitive to the addition of GF. The loss in strength that occurred due to the incorporation of RCA was reduced to a large extent upon the inclusion of GF. GF caused significant improvements in the split tensile and flexural strength of RCA concrete. Optimum dosage of GF was determined to be 0.25% for NCA, and 0.5% for RCA concrete respectively, based on the results of combined mechanical performance (MP).

FRP-Nanoclay Hybrid Composites: A Review

2017 ◽  
Vol 904 ◽  
pp. 146-150 ◽  
Author(s):  
Manjunath Shettar ◽  
U. Achutha Kini ◽  
Sathya Shankar Sharma ◽  
Pavan Hiremath
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Basic Structure ◽  
Structure Property ◽  
Key Factors ◽  
Characterization Techniques

The review is on aimed an insight source for FRP-Nanoclay hybrid composite (nanocomposite) research, which includes basic structure/property, preparation & characterization techniques, mechanical properties and applications of hybrid composites. Key factors are discussed, which are influencing the mechanical properties of nanocomposite with nanoclay addition. Conclusions are also drawn based on the research of nanocomposites and improvement in mechanical properties.

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