Elliptic vibration-assisted cutting of fibre-reinforced polymer composites: Understanding the material removal mechanisms

2014 ◽  
Vol 92 ◽  
pp. 103-111 ◽  
Author(s):  
Weixing Xu ◽  
L.C. Zhang ◽  
Yongbo Wu
Keyword(s):  
Polymer Composites ◽  
Material Removal ◽  
Material Removal Mechanisms ◽  
Reinforced Polymer ◽  
Removal Mechanisms ◽  
Elliptic Vibration ◽  
Fibre Reinforced Polymer

Effect of Frequency and Amplitude on the Performance of Elliptic Vibration-Assisted Cutting of Fibre-Reinforced Polymer Composites

2014 ◽  
Vol 1017 ◽  
pp. 753-757 ◽  
Author(s):  
Wei Xing Xu ◽  
Liang Chi Zhang
Keyword(s):  
Polymer Composites ◽  
Vibration Frequency ◽  
Vertical Direction ◽  
Subsurface Damage ◽  
Element Analysis ◽  
Reinforced Polymer ◽  
Elliptic Vibration ◽  
Fibre Reinforced Polymer ◽  
Cutting Path ◽  
Cutting Direction

To effectively machine fibre-reinforced polymer composites using a simple tool, the authors have developed an elliptic vibration-assisted (EVA) cutting technique by applying micro-scale vibrations to a tool tip. This investigation aims to understand the effect of vibration frequency and amplitude on the EVA cutting performance. With the aid of a microstructure-based 3D finite element analysis, this study found that an increased vibration frequency or amplitude can accelerate the fracture of fibres, and reduce cutting forces in both the cutting and normal directions. The fracture mechanism was found to be dominated by the bending of fibres when the vibration frequency or amplitude in the cutting direction was small. With increasing the frequency or amplitude, impact-induced fracture becomes dominant, which reduces subsurface damage. It was found that to promote the performance of EVA cutting, the vibration frequency and amplitude of the cutting tool should be high. However, a too large frequency can bring about severe subsurface damage and bending fracture of fibres beneath the cutting path. A too large amplitude in the cutting direction, however, can accelerate the tool wear, while that in the vertical direction can worsen the fibre-matrix debonding.

scholarly journals A Review on Mechanical Properties of Natural Fibre Reinforced Polymer Composites under Various Strain Rates

2021 ◽  
Vol 5 (5) ◽  
pp. 130
Author(s):  
Tan Ke Khieng ◽  
Sujan Debnath ◽  
Ernest Ting Chaw Liang ◽  
Mahmood Anwar ◽  
Alokesh Pramanik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Polymer Composites ◽  
Stress Transfer ◽  
Natural Fibre ◽  
Transfer Efficiency ◽  
Strain Rates ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Fibre Matrix

With the lightning speed of technological evolution, the demand for high performance yet sustainable natural fibres reinforced polymer composites (NFPCs) are rising. Especially a mechanically competent NFPCs under various loading conditions are growing day by day. However, the polymers mechanical properties are strain-rate dependent due to their viscoelastic nature. Especially for natural fibre reinforced polymer composites (NFPCs) which the involvement of filler has caused rather complex failure mechanisms under different strain rates. Moreover, some uneven micro-sized natural fibres such as bagasse, coir and wood were found often resulting in micro-cracks and voids formation in composites. This paper provides an overview of recent research on the mechanical properties of NFPCs under various loading conditions-different form (tensile, compression, bending) and different strain rates. The literature on characterisation techniques toward different strain rates, composite failure behaviours and current challenges are summarised which have led to the notion of future study trend. The strength of NFPCs is generally found grow proportionally with the strain rate up to a certain degree depending on the fibre-matrix stress-transfer efficiency. The failure modes such as embrittlement and fibre-matrix debonding were often encountered at higher strain rates. The natural filler properties, amount, sizes and polymer matrix types are found to be few key factors affecting the performances of composites under various strain rates whereby optimally adjust these factors could maximise the fibre-matrix stress-transfer efficiency and led to performance increases under various loading strain rates.

scholarly journals Long-fibre reinforced polymer composites by 3D printing: influence of nature of reinforcement and processing parameters on mechanical performance

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Francis Dantas ◽  
Kevin Couling ◽  
Gregory J. Gibbons
Keyword(s):  
Carbon Fibre ◽  
Polymer Composites ◽  
Mechanical Performance ◽  
Flexural Modulus ◽  
Matrix Material ◽  
Processing Parameters ◽  
Fibre Reinforcement ◽  
Reinforced Polymer ◽  
Unreinforced Material ◽  
Fibre Reinforced Polymer

Abstract The aim of this study was to identify the effect of material type (matrix and reinforcement) and process parameters, on the mechanical properties of 3D Printed long-fibre reinforced polymer composites manufactured using a commercial 3D Printer (Mark Two). The effect of matrix material (Onyx or polyamide), reinforcement type (Carbon, Kevlar®, and HSHT glass), volume of reinforcement, and reinforcement lay-up orientation on both Ultimate Tensile Strength (UTS) and Flexural Modulus were investigated. For Onyx, carbon fibre reinforcement offered the largest increase in both UTS and Flexural Modulus over unreinforced material (1228 ± 19% and 1114 ± 6% respectively). Kevlar® and HSHT also provided improvements but these were less significant. Similarly, for Nylon, the UTS and Flexural Modulus were increased by 1431 ± 56% and 1924 ± 5% by the addition of carbon fibre reinforcement. Statistical analysis indicated that changing the number of layers of reinforcement had the largest impact on both UTS and Flexural Strength, and all parameters were statistically significant.

Design and fabrication of compression test rig for fibre-reinforced polymer composites

2014 ◽  
Vol 18 (sup6) ◽  
pp. S6-232-S6-235 ◽  
Author(s):  
N. Muhammad ◽  
A. Jumahat ◽  
M. H. Hamzah ◽  
J. Mahmud
Keyword(s):  
Polymer Composites ◽  
Compression Test ◽  
Test Rig ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer

Material removal mechanisms by EDM of zirconia reinforced MWCNT nanocomposites

2016 ◽  
Vol 42 (5) ◽  
pp. 5792-5801 ◽  
Author(s):  
Latifa Melk ◽  
Marta-Lena Antti ◽  
Marc Anglada
Keyword(s):  
Material Removal ◽  
Material Removal Mechanisms ◽  
Removal Mechanisms
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