scholarly journals Influence of Aluminum wire mesh location through stacking sequence on mechanical properties of GFRE composite laminates

2021 ◽  
Vol 36 (2) ◽  
pp. 53-62
Author(s):  
FATMA ELZAHRAA ABDELWADOUD
Keyword(s):  
Mechanical Properties ◽  
Composite Laminates ◽  
Wire Mesh ◽  
Stacking Sequence ◽  
Aluminum Wire

Studying the effect of different carbon and glass fabric stacking sequence on mechanical properties of epoxy hybrid composite laminates

2020 ◽  
Vol 21 ◽  
pp. 100425 ◽  
Author(s):  
K.C. Nagaraja ◽  
S. Rajanna ◽  
G.S. Prakash ◽  
Praveennath G. Koppad ◽  
M. Alipour
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Composite Laminates ◽  
Glass Fabric ◽  
Stacking Sequence

scholarly journals Multi-objective optimization of carbon/glass hybrid composites with newly developed resin (NDR) using gray relational analysis

2020 ◽  
Vol 16 (6) ◽  
pp. 1709-1729
Author(s):  
Sagar Dnyandev Patil ◽  
Yogesh J. Bhalerao
Keyword(s):  
Mechanical Properties ◽  
Composite Laminates ◽  
Hybrid Composites ◽  
Research Work ◽  
Optimum Combination ◽  
Gray Relational Analysis ◽  
Stacking Sequence ◽  
Content Type ◽  
Relational Analysis ◽  
Design Variables

PurposeIt is seen that little amount of work on optimization of mechanical properties taking into consideration the combined effect of design variables such as stacking angle, stacking sequence, different resins and thickness of composite laminates has been carried out. The focus of this research work is on the optimization of the design variables like stacking angle, stacking sequence, different resins and thickness of composite laminates which affect the mechanical properties of hybrid composites. For this purpose, the Taguchi technique and the method of gray relational analysis (GRA) are used to identify the optimum combination of design variables. In this case, the effect of the abovementioned design variables, particularly of the newly developed resin (NDR) on mechanical properties of hybrid composites has been investigated.Design/methodology/approachThe Taguchi method is used for design of experiments and with gray relational grade (GRG) approach, the optimization is done.FindingsFrom the experimental analysis and optimization study, it was seen that the NDR gives excellent bonding strength of fibers resulting in enhanced mechanical properties of hybrid composite laminates. With the GRA method, the initial setting (A3B2C4D2) was having GRG 0.866. It was increased by using a new optimum combination (A2B2C4D1) to 0.878. It means that there is an increment in the grade by 1.366%. Therefore, using the GRA approach of analysis, design variables have been successfully optimized to achieve enhanced mechanical properties of hybrid composite laminates.Originality/valueThis is an original research work.

scholarly journals The Effect of Stacking Sequence and Temperature on the Mechanical and Low Velocity Impact Response of Glass/Epoxy Laminates

2010 ◽  
Vol 19 (4) ◽  
pp. 096369351001900
Author(s):  
Semih Benli ◽  
Onur Sayman ◽  
Yusuf Arman
Keyword(s):  
Mechanical Properties ◽  
Residual Stresses ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Low Velocity Impact ◽  
Stacking Sequence ◽  
Low Velocity ◽  
Velocity Impact ◽  
Thermal Residual Stresses ◽  
The Impact

This paper demonstrates both low velocity impact and mechanical test results of glass/epoxy composites at room and high temperatures. Square specimens of glass/epoxy composite laminates with lay-ups [0/0/90]s, [90/0/0]s, [0/90/45]s were subjected to low velocity impact energy range of 4 J to 22 J using an impact test machine at temperatures of 20°C, 50°C and 90°C. Load-deflection and energy profile diagrams were plotted for each stacking sequence and temperature. After impact, a high-intensity light was used to measure the projected delamination areas in the impacted glass/epoxy composite laminates. In order to investigate effects of temperature on mechanical properties and impact resistance, mechanical tests were also performed using unidirectional glass/epoxy composite plates composed of eight plies produced according to ASTM Standards. In addition, to understand the contribution of thermal residual stresses occurring during and after manufacturing of composite laminates on impact-induced delamination, SX and SY stresses in the composite laminates at 20, 50 and 90°C were determined by using ANSYS software. It can be concluded from this study that temperature has significant effects on the impact behaviour and mechanical properties of glass fibre-reinforced epoxy composite laminates. Besides, an increase in temperature decreases both the delamination area and the contribution of thermal residual stresses on delamination under the same impact loading.

Mechanical behavior of woven natural fiber fabric composites: Effect of weaving architecture, intra-ply hybridization and stacking sequence of fabrics

2016 ◽  
Vol 47 (5) ◽  
pp. 938-959 ◽  
Author(s):  
M Rajesh ◽  
Savendra P Singh ◽  
Jeyaraj Pitchaimani
Keyword(s):  
Mechanical Properties ◽  
Free Vibration ◽  
Composite Laminates ◽  
Natural Fiber ◽  
Core Layer ◽  
Layered Composite ◽  
Damping Factor ◽  
Stacking Sequence ◽  
Layer Sequence ◽  
Vibration Properties

A comprehensive analysis carried out on the mechanical and free vibration properties of woven natural fiber polymer composites is presented. Jute fabric with three different weave types (plain, basket and herringbone) and intra-ply woven jute-banana fabrics are considered for investigation of the effect of weave type of a fabric and its stacking sequence on mechanical, dynamic mechanical and free vibration properties. Enhancement of the properties is found with the number of layers of fabric and better properties obtained for four layers. Uniform stress distribution along warp and weft direction of fabric with basket weave type lead to better properties compared to other weave types for four-layered composites. Intra-ply hybridization of jute-banana also enhances the mechanical properties but slightly less than the jute-basket fabric composite. The investigations on effect of layer sequence of fabrics revealed improvement in mechanical properties. Layered composite with relatively strong intra-ply fabric as the facing layer and relatively weak jute plain fabrics as the core layer has higher tensile and flexural properties. Experimental modal analysis carried out on beam-like composite laminates reveal that natural frequencies and associated modal damping factor are significantly influenced by stacking sequence and weave type of a fabric. The density of the composite calculated based on Archimedes principle matches well with the theoretical values.

Effect of ethanol on the mold filling-time and mechanical properties of woven glass fiber reinforced epoxy filled with TiO2 nanoparticles

2020 ◽  
pp. 152808372097134
Author(s):  
Sherif M Youssef ◽  
M Megahed ◽  
Soliman S Ali-Eldin ◽  
MA Agwa
Keyword(s):  
Mechanical Properties ◽  
Composite Laminates ◽  
Cost Effective ◽  
Mold Filling ◽  
High Viscosity ◽  
Ansys Fluent ◽  
Glass Fiber Reinforced ◽  
Filling Time ◽  
Ethanol Addition ◽  
Woven Glass Fiber

Vacuum resin infusion (VRI) is a promising technique for manufacturing complicated structural laminates. This high viscosity of nanofilled resin increases the filling time and leads to an incomplete mold filling. The mold filling time can be reduced either by making the fiber dimensions smaller than the mold (gaps around the fibers) or by adding ethanol to nanofilled epoxy. However, ethanol addition influences the mechanical properties of composite laminates. In this study, different amounts of ethanol (0.5 wt. % and 1 wt. %) were used as a diluent to both neat epoxy and epoxy filled with (0.25 wt. %) of titanium dioxide (TiO2) nanoparticles. From results, it was found that ethanol addition saves the time for neat and nanofilled epoxy by 47.1% and 24.1%, respectively. It was found that adding 0.5 wt. % of ethanol to 0.25wt. % of TiO2 nanoparticles (GT0.25E0.5) enhances the tensile and flexural strength by 30.8% and 55.9%, respectively compared with neat specimens. Furthermore, the tensile and flexural moduli increased by 62% and 72.3%, respectively. Furthermore, the mold filling time was investigated experimentally and validated numerically using ANSYS FLUENT software. The mold filling time prediction using ANSYS FLUENT can be used to avoid resin gelation before the incomplete mold filling and thus can be considered a cost-effective methodology. The results showed that the gaps around the fibers reduce the time by 178% without affecting the mechanical properties.

Effect of fibre content on the mechanical properties of hemp fibre woven fabrics/polypropylene composite laminates

2021 ◽  
pp. 096739112110239
Author(s):  
Sheedev Antony ◽  
Abel Cherouat ◽  
Guillaume Montay
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Composite Laminates ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Woven Fabrics ◽  
Fibre Content ◽  
Viscoelastic Behaviour ◽  
Hemp Fibre

Nowadays natural fibre composites have gained great significance as reinforcements in polymer matrix composites. Composite material based on a polymer matrix reinforced with natural fibres is extensively used in industry due to their biodegradability, recyclability, low density and high specific properties. A study has been carried out here to investigate the fibre volume fraction effect of hemp fibre woven fabrics/PolyPropylene (PP) composite laminates on the tensile properties and impact hammer impact test. Initially, composite sheets were fabricated by the thermal-compression process with desired number of fabric layers to obtain composite laminates with different fibre volume fraction. Uniaxial, shear and biaxial tensile tests were performed and mechanical properties were calculated. Impact hammer test was also carried out to estimate the frequency and damping parameters of stratified composite plates. Scanning Electron Microscope (SEM) analysis was performed to observe the matrix and fibre constituent defects. Hemp fabrics/PP composite laminates exhibits viscoelastic behaviour and as the fibre volume fraction increases, the viscoelastic behaviour decreases to elastic behaviour. Due to this, the tensile strength increases as the fibre content increases. On the other hand, the natural frequency increases and damping ratio decrease as the fibre volume fraction increases.

Mechanical Properties in Notched AS-4/PEEK APC-2 Composite Laminates at Elevated Temperature

2005 ◽  
Vol 40 (11) ◽  
pp. 955-969 ◽  
Author(s):  
Ming-Hwa R. Jen ◽  
Yu-Chung Tseng ◽  
Shi-Chao Chang ◽  
Ming Chen
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Composite Laminates
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