Correlation of fatigue behavior and dynamic mechanical properties of hybrid composites of polypropylene/short glass fibers/hollow glass beads

2021 ◽  
pp. 089270572199319
Author(s):  
Gustavo B Carvalho
Keyword(s):  
Stress Relaxation ◽  
Flexural Strength ◽  
Relaxation Rate ◽  
Hybrid Composites ◽  
Fatigue Behavior ◽  
Glass Fibers ◽  
Glass Beads ◽  
Hollow Glass ◽  
Dynamic Mechanical ◽  
Short Glass

Ternary hybrid composites of Polypropylene (PP)/Short Glass Fibers (GF)/Hollow Glass Beads (HGB) were prepared using untreated and aminosilane-treated HGB, compatibilized with maleated-PP, and with varying total and relative GF/HGB contents. Static/short-term flexural strength properties data revealed, through lower flexural strength values, that the presence of untreated HGB particles induces to fiber-polymer interfacial decoupling at much higher extent than in the presence of aminosilane-treated HGB particles. This phenomenon is also evident when evaluating the data from displacement-controlled three-point bending fatigue tests. Monitored up to 106 cycles, the analyzed hybrid composites presented distinct performance relative to their fatigue stress relaxation rate: the lower the matrix-reinforcements’ interfacial adhesion, more pronounced the stress relaxation rate as a function of the number of fatigue cycles. Dynamic Mechanical Thermal Analysis (DMTA) results could successfully reveal the hybrid composites behavior at the microstructural level when they were submitted to both static flexural test and fatigue, depending on the degree of interfacial interactions between the polymer matrix of PP and the hybrid reinforcements of GF and HGB (with and without aminosilane surface treatment).

Quasi-static and dynamic mechanical thermal performance of date palm/glass fiber hybrid composites

2020 ◽  
pp. 152808372095803
Author(s):  
Abderrazek Merzoug ◽  
Bachir Bouhamida ◽  
Zouaoui Sereir ◽  
Abderrezak Bezazi ◽  
Ali Kilic ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Glass Fiber ◽  
Date Palm ◽  
Hybrid Composites ◽  
Weight Ratio ◽  
Fiber Surface ◽  
Damping Factor ◽  
Dynamic Mechanical ◽  
Naoh Solution ◽  
Composite Glass

The present work reports an experimental study on the thermal and mechanical properties of hybrid composites obtained from Petiole Date Palm Fiber (PDPF)/Glass fiber (GF) as reinforcement and vinylester resin (VE). In order to improve the fiber/matrix adhesion, palm fibers were alkali treated with 5% NaOH solution for 24 h–72h. SEM and ATR-FTIR analysis revealed that the 48 h treatment of PDFP with NaOH solution led to rough fiber surface. Vacuum assisted resin transfer molding (VARTM) system was used to produce four hybrid composites (30PDPF/0GF, 20PDPF/10GF, 10PDPF/20GF and 0PDPF/30GF) where the weight ratio of total fiber reinforcement was kept 30%. The treated palm fibers were arranged as a nonwoven mat and placed between woven glass fabrics. Tensile, flexural, dynamic mechanical thermal analysis (DMTA), and thermogravimetric (TGA) were carried out to evaluate the performance of the hybrid composites. The flexural strength and modulus for pure PDPF composite were found to be 60 MPa and 3.87 GPa respectively. Addition of 20%wt glass fiber led an increase in the thermal stability and an enhancement in the tensile and flexural strength by 71.72% and 74.51%, respectively compared to pure PDPF composite. However, the incorporation of 10% of PDPF increases the damping factor from 0.2 for the composite glass/VE to 0.54 for the hybrid 10PDPF/20GF. According to findings of this study, PDPF based composites can be used as non-structural parts in automotive and boat industries.

Effects of hybridization and fiber orientation on flexural properties of hybrid short glass fiber– and short carbon fiber–reinforced vinyl ester composites

2018 ◽  
Vol 26 (5-6) ◽  
pp. 371-379 ◽  
Author(s):  
Muhammad Shafiq Irfan ◽  
Farhan Saeed ◽  
Yasir Qayyum Gill ◽  
Asif Ali Qaiser
Keyword(s):  
Fiber Orientation ◽  
Vinyl Ester ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Fiber Composites ◽  
Short Fiber ◽  
Flexural Properties ◽  
Fiber Reinforced ◽  
Short Carbon ◽  
Short Glass

Short fiber–reinforced hybrid polymer (SFRHP) composites were prepared using short glass fibers (SGFs) and short carbon fibers (SCFs) as the reinforcements and vinyl ester resin as the matrix. The flexural properties of all-SGF, all-SCF, and SGF-SCF hybrid composites with controlled fiber orientation were found out experimentally and also predicted using rule of hybrid mixtures. Hand layup technique was used for the preparation of the composites. Composites with different patterns of fiber alignment were prepared and their properties were compared with randomly oriented short fiber composites. The results showed that the flexural performance of samples with longitudinal orientation of the fibers was significantly better than randomly oriented samples for all composites. Synergistic effect of hybridization (positive hybridization) with respect to flexural properties of SFRHP composites was obtained by controlling the orientation of the fibers. It was shown that the hybridization of fibers in the short fiber composites can provide economic savings.

scholarly journals Basalt/Glass Fiber Polypropylene Hybrid Composites: Mechanical Properties at Different Temperatures and under Cyclic Loading and Micromechanical Modelling

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5574
Author(s):  
Anna Kufel ◽  
Slawomir Para ◽  
Stanisław Kuciel
Keyword(s):  
Tensile Test ◽  
Glass Fiber ◽  
Hybrid Composites ◽  
Fatigue Behavior ◽  
Glass Fibers ◽  
Measurement Data ◽  
Charpy Impact ◽  
Simulation Software ◽  
Dissipation Energy ◽  
Basalt Glass

Basalt/glass fiber polypropylene hybrid composites were developed as subjects of investigation, with the aim to characterize their properties. An injection molding machine was used to produce the test samples. The following three different tests, at various specimen temperatures, were conducted: tensile test, three-point flexural test, and Charpy impact test. To determine fatigue behavior, the samples were uniaxially loaded and unloaded. Mechanical hysteresis loops were recorded and the dissipation energy of each loop was calculated. To determine the adhesion and dispersion between the fibers and the matrix, the fractured surfaces of the various specimens, after the tensile test, were investigated using a scanning electron microscope. The results show that the production of a composite with both basalt and glass fibers, in a polypropylene matrix with maleic anhydride-grafted polypropylene, can be successfully achieved. The addition of the two types of fibers increased the tensile strength by 306% and the tensile modulus by 333% for a composition, with 20% by weight, of fibers. The material properties were estimated with the help of a simulation software, and validated with a FEA. A satisfactory correlation between the simulation and measurement data was achieved. The error lays in a range of 2% between the maximum stress values. At a lower strain (up to 0.02), the stress values are very well matched.

Notch Effects on Fatigue Behavior of Thermoplastics

2014 ◽  
Vol 891-892 ◽  
pp. 1403-1409 ◽  
Author(s):  
Seyyedvahid Mortazavian ◽  
Ali Fatemi
Keyword(s):  
Fatigue Life ◽  
Fatigue Behavior ◽  
Glass Fibers ◽  
Type Specimen ◽  
Accurate Method ◽  
Metallic Materials ◽  
Polybutylene Terephthalate ◽  
Neat Polymer ◽  
Short Glass ◽  
Plate Type

An experimental study was conducted to evaluate notch effects on fatigue behavior of a neat polymer (PP impact co-polymer) and a composite made of 30 wt% short glass fibers in polybutylene terephthalate (PBT). A plate-type specimen geometry with a central circular hole was used. The experiments were conducted at room temperature in uniaxial tension-tension (R = 0.1) and tension-compression (R = -1) loading conditions. Some analytical methods including Neubers rule and the method of critical distances were used in addition to FEA to predict fatigue life of notched specimens. Neubers rule commonly used for metallic materials proved to be an accurate method for predicting the notched fatigue life of the thermoplastics considered.

scholarly journals Characterization of jute and glass fiber reinforced polyester based hybrid composite In this research

2016 ◽  
Vol 51 (2) ◽  
pp. 81-88
Author(s):  
MR Hassan ◽  
MA Gafur ◽  
AA Rana ◽  
MR Qadir ◽  
SM Masum ◽  
...  
Keyword(s):  
Composite Material ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Hybrid Composite ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Fiber Composite ◽  
Glass Fibers ◽  
Research Work ◽  
Synthetic Fiber

In this research work an attempt is made to fabricate a hybrid composite material with hessian cloth (natural fiber) and glass fiber (synthet ic fiber) in polyester matrix using hand lay-up process and testing was performed by ASTM standards. Main objective of this research work is to investigate the effects of use of natural fiber in the composite material with the synthetic fiber. Experimental results revealed that hybridization of composite with natural and synthetic fibers shows promising tensile strength, flexural strength and hardness. Among the hybrid composites one with the composition of three layers of glass fibers and two layers of hessian cloth (jute fiber) showed highest ten sile strength and flexural strength which were found 104.63 MPa and 134.65 MPa respectively. Water absorption was high in composites having higher hessian cloth content than glass fiber. Composite with high glass fiber content showed high hardness which was 39.9 HV.Bangladesh J. Sci. Ind. Res. 51(2), 81-88, 2016

Effect of stacking sequence on tensile, flexural and thermomechanical properties of hybrid flax/glass and jute/glass thermoset composites

2017 ◽  
Vol 48 (2) ◽  
pp. 494-520 ◽  
Author(s):  
Erdem Selver ◽  
Nuray Ucar ◽  
Turgut Gulmez
Keyword(s):  
Flexural Strength ◽  
Composite Laminates ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Fibre Volume Fraction ◽  
Thermomechanical Properties ◽  
Natural Fibres ◽  
Stacking Sequence ◽  
Dynamic Mechanical ◽  
Glass Fibres

This paper investigates tensile, flexural, and dynamic mechanical properties of natural and hybrid thermoset composite laminates made from flax/glass and jute/glass fibres. Hybrid laminates with various stacking sequences were manufactured by vacuum infusion method. Weight and cost of composites decreased using cheaper and lightweight natural fibres (flax and jute). Results showed that composite laminates made from natural fibres had higher specific strength values when the results were normalised to same glass fibre volume fraction, although they had lower tensile and flexural strength than that of glass composites without normalization. Composite elastic properties were predicted using classical lamination theory through rule of mixture and Halpin–Tsai models, and compared with experimental values. Changing the stacking sequence did not affect the tensile strength and modulus of composites significantly, whereas there were notable differences on flexural strength of composites when the outer layers contained glass fibres. Dynamic mechanical analyses showed similar results as flexural test, while natural fibre and some of hybrid composites had higher damping characteristics than glass-reinforced composites.

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