A new approach for strength and stiffness prediction of discontinuous fibre reinforced composites (DFC)

Shah, S.Z.H.; Choudhry, Rizwan Saeed; Mahadzir, Shuhaimi

doi:10.1016/j.compositesb.2019.107676

Cited by 20 publications

(7 citation statements)

References 34 publications

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“…The thermoset polymers took the lead as a matrix for FRC due to their ease in manufacturing processes in comparison with thermoplastic polymers. The thermoplastic FRC offers attractive advantages, i.e., higher impact resistance, damage tolerance and the ability to be recycled at the end of life [ 14 , 15 , 16 ]. However, the major roadblock is the manufacture of thermoplastic FRC, as the viscosity of the thermoplastic matrix in its molten state is high.…”

Section: Introductionmentioning

confidence: 99%

Off-Axis and On-Axis Performance of Novel Acrylic Thermoplastic (Elium®) 3D Fibre-Reinforced Composites under Flexure Load

et al. 2022

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The flexure response of novel thermoplastic (Elium®) 3D fibre-reinforced composites (FRC) was evaluated and compared with a conventional thermoset (Epolam®)-based 3D-FRC. Ten different types of sample 3D-FRC were prepared by varying fibre orientations, i.e., 0°, 30°, 45°, 60° and 90°, and resin system, i.e., thermoplastic and thermoset. The bending characteristics and failure mechanisms were determined by conducting a three-point bend test. Results elucidate that the on-axis specimens show linear response and brittle failure; in contrast, the off-axis specimens depicted highly nonlinear response and ductile failure. The thermoplastic on-axis specimen exhibited almost similar flexure strength; in comparison, the off-axis specimens show ~17% lower flexure strength compared to thermoset 3D-FRC. Thermoplastic 3D-FRC shows ~40% higher energy absorption, ~23% lower flexure modulus and ~27% higher flexure strains as compared to its thermoset counterpart.

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Section: Introductionmentioning

confidence: 99%

Off-Axis and On-Axis Performance of Novel Acrylic Thermoplastic (Elium®) 3D Fibre-Reinforced Composites under Flexure Load

et al. 2022

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“…Jain et al proposed a hybrid model that combines the finite element method and the mean field homogenization method to simulate the stiffness of CF-SMCs [11]. Shah et al developed a three-dimensional (3D) finite element modeling method to simulate the tensile strength and stiffness of CF-SMCs while taking into account the overlapping of the embedded sheets [12]. Martulli et al managed to link the fiber flow and internal geometry irregularities during the fabrication process with the mechanical properties of CF-SMCs [13][14][15] and verified the performance of thick-walled components fabricated with CF-SMCs [16].…”

Section: Introductionmentioning

confidence: 99%

Evaluation and Modeling of Tensile Properties of Chopped Carbon Fiber Tapes Reinforced Thermoplastics of Different Tape Thicknesses

2022

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The mechanical properties of carbon fiber sheet molding compounds (CF-SMCs) are sensitive to the internal geometry of the reinforcing fibers. In this study, novel CF-SMCs with outstanding mechanical performance, namely, chopped carbon fiber tapes reinforced thermoplastics (CTTs), were fabricated using tapes with different thicknesses. The effects of the tape morphology on the tensile properties of the CTTs were evaluated both experimentally and analytically. Two X-ray-aided computed tomography (CT) based methods were adopted to analyze the effects of the tape thickness on the internal geometry of the CTTs. The modified Mori-Tanaka model was used based on the fiber orientation data obtained from the X-ray micro-CT analyses. The results showed that the tensile properties decreased significantly with an increase of the out-of-plane misorientation, which is more intensive for thicker tapes. In addition, the tensile properties showed greater variations as the tape thickness was increased. The two X-ray micro-CT methods were found to be suitable for visualizing and quantitatively analyzing the internal geometries. Correlations were found between the tape thickness and the tensile properties. Finally, the results of the simulations performed using the Mori-Tanaka model and the fiber orientation data were found to be similar to those of the experiments in tensile moduli, but the results for strength deviate from the experiments.

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“…The use of composite materials based on polymers is an important factor in improving the efficiency and successful development of leading industries [ 1 ]. At the same time, the rapid development and improvement of composite materials, as well as the constant need for modern production in them, urgently require the creation of competitive materials with predictable properties [ 2 , 3 ] and the development of high-quality polymer composites with specified technical characteristics [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Polymer Composite Materials Chaotically Reinforced with Spherical and Cylindrical Inclusions

et al. 2022

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The technical and economic efficiency of new PCMs depends on the ability to predict their performance. The problem of predicting the properties of PCMs can be solved by computer simulation by the finite element method. In this work, an experimental determination of the physical and mechanical properties of PTFE PCMs depending on the concentration of fibrous and dispersed filler was carried out. A finite element model in ANSYS APDL was built to simulate the strength and load-bearing capacity of the material with the analysis of damage accumulation. Verification of the developed computer model to predict the mechanical properties of composite materials was performed by comparing the results obtained during field and model experiments. It was found that the finite element model predicts the strength of chaotically reinforced spherical inclusions of composite materials. This is due to the smoothness of the filler surfaces and the lack of filler dissection in the model. Instead, the prediction of the strength of a finite element model of chaotically reinforced cylindrical inclusions of composite materials requires additional analysis. The matrix and the fibrous filler obviously have stress concentrators and are both subject to the difficulties of creating a reliable structural model.

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A new approach for strength and stiffness prediction of discontinuous fibre reinforced composites (DFC)

Cited by 20 publications

References 34 publications

Off-Axis and On-Axis Performance of Novel Acrylic Thermoplastic (Elium®) 3D Fibre-Reinforced Composites under Flexure Load

Off-Axis and On-Axis Performance of Novel Acrylic Thermoplastic (Elium®) 3D Fibre-Reinforced Composites under Flexure Load

Evaluation and Modeling of Tensile Properties of Chopped Carbon Fiber Tapes Reinforced Thermoplastics of Different Tape Thicknesses

Modeling of Polymer Composite Materials Chaotically Reinforced with Spherical and Cylindrical Inclusions

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