Experimental and numerical study on scratch performance of additively manufactured continuous carbon fibre reinforced polyamide 6 composites

Man, Ziyan; Wan, Boyang; Wang, Hongjian; Li, Qing

doi:10.1016/j.compscitech.2022.109314

Cited by 10 publications

(5 citation statements)

References 38 publications

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“…In this case, it is also confirmed that the friction force is chiefly produced by the adhesion between the indenter tip and the sample under low normal load, and the different friction forces caused by the sliding of the indenter on carbon fiber and polymer matrix respectively are the main reasons for the fluctuation of friction coefficients (Figure 9). More specifically, mild fiber cracking and fiber breakage occurred in T‐ and AP‐orientations, while no observable carbon fiber failure apart from slight interfacial debonding was found in the P‐orientation under 1 N. This is due to the fact that when the scratch direction is parallel to the fiber orientation, the contact stress is smallest 49 . At the normal load of 2 N, stress concentration caused fiber end fracture in the P‐orientation, and fibers were obviously pressed into the matrix in T‐ and AP‐orientations under higher contact stress, which could still be conducive to the scratch resistance.…”

Section: Resultsmentioning

confidence: 96%

“…More specifically, mild fiber cracking and fiber breakage occurred in T-and AP-orientations, while no observable carbon fiber failure apart from slight interfacial debonding was found in the P-orientation under 1 N. This is due to the fact that when the scratch direction is parallel to the fiber orientation, the contact stress is smallest. 49 At the normal load of 2 N, stress concentration caused fiber end fracture in the P-orientation, and fibers were obviously pressed into the matrix in T-and AP-orientations under higher contact stress, which could still be conducive to the scratch resistance. Therefore, the friction coefficient and penetration depth were not dramatically increased, as seen in Figure 10A,B.…”

Section: Tribological Behavior Of Composites In Multiple Unidirection...mentioning

confidence: 99%

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Tribological anisotropy of PEEK composites filled with highly oriented carbon fibers manufactured by fused deposition modeling

Lv,

Yang,

Pei

et al. 2023

Polymer Composites

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The orientation of fibers in polymer matrix plays a crucial role in governing the performance of composites including friction and wear. In the present work, the effect of fiber orientation on tribological behavior of 3D printed short carbon fiber reinforced PEEK composites (CF/PEEK) was studied by two series of tribo‐tests, namely macro‐scale continuous sliding and micro‐scale multiple scratching. Fiber orientations studied included parallel, tilted and anti‐parallel relative to the sliding direction in both macro sliding and micro scratching. It was revealed that the effect of fiber orientation showed strong dependence on applied loads. In most cases, lower wear were obtained when the fiber orientation was tilted rather than parallel or anti‐parallel in macro continuous sliding. With tilted orientation, the composite also exhibited the best scratching behavior except for that at the lowest normal load. To reveal the mechanisms behind this orientation effects, the composite's worn surface, as well as those of the counter rings, were characterized. Findings of the present work indicates that scratching tests can help understand the macro sliding mechanisms and appropriate fiber orientation is beneficial in improving the tribological properties of polymer composites, which can be realized through 3D printing.Highlights PEEK composites filled with highly oriented carbon fibers were manufactured by fused deposition modeling (FDM). Tribological anisotropy was studied through macro sliding and micro scratching measurements with respect to carbon fiber orientation. The coupling mechanism of load and fiber orientation was discussed in influencing the composites' friction and wear properties.

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Section: Resultsmentioning

confidence: 96%

Section: Tribological Behavior Of Composites In Multiple Unidirection...mentioning

confidence: 99%

Tribological anisotropy of PEEK composites filled with highly oriented carbon fibers manufactured by fused deposition modeling

Lv,

Yang,

Pei

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…If the curing temperature is directly increased without the use of stage heating, the reaction activity will be too high, and a large amount of polymerization heat is generated in a short time, so that the finished product will produce warping, bulging, porosity and other defects, so the prepreg usually will use stepped heating and solidification process. After the curing time is over, next step is the cooling stage [5].…”

Section: Properties and Technology Of Carbon Fiber Prepregmentioning

confidence: 99%

Study on three major carbon fiber composites

Luo

2023

ACE

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The rapid development of modern industry has more requirements for materials, and carbon fiber composites have gradually been widely used in various fields as cutting-edge materials. This paper mainly introduces three main manifestations of carbon fiber composites, namely, carbon fiber-resin, carbon fiber-metal and carbon fiber-ceramic. The composition, properties and applications of three carbon fiber composites are discussed. In terms of composition, the chemical composition and manufacturing differences of the three materials are discussed. In terms of performance, the control variable method is used to study the various indicators of the three carbon fiber composites under different temperatures, pressures, etc. The article also discusses the practical role of three carbon fiber composites in different fields, which is not only a breakthrough in materials science, but also an important progress in modern industry. The results show that they all have the characteristics of ultra-high tensile strength and lightweight, and show their excellent properties in other aspects. The results show that carbon fiber plays an important role in cutting-edge fields and under some extreme conditions, but carbon fiber composites have not been widely used due to production cost, time, utilization rate, recovery and environmental protection.

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“…CFs are normally utilized in different forms, such as tows, woven and non-woven fabrics, and short fibers. [1][2][3][4] Short fibers are generally observed to be randomly oriented in polymer composites fabricated using regular molding conditions.…”

Section: Introductionmentioning

confidence: 99%

Effects of nonlinear hyper‐viscoelasticity and matrix/fiber debonding on the mechanical properties of short carbon fiber/styrene‐butadiene rubber composites under cyclic uniaxial loading using a multiscale finite element model

et al. 2023

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A multiscale finite element analysis was performed for short carbon fiber (SCF) reinforced rubber composites under uniaxial tensile loading with periodic geometries and random distributions of the short fibers. Three different zones were considered, including the rubber matrix, SCF as the inclusion phase, and a thin matrix layer as the interphase. A nonlinear hyper‐viscoelastic model was selected for the matrix, while linear viscoelastic and elastic models were considered for the interphase and reinforcing phases, respectively. The analyses were carried out on an incremental basis from a lower loading‐unloading rate of 10 mm/min to a higher rate of 100 mm/min. Two interface conditions were considered between the polymer matrix and the SCF phases: perfect bonding and partial debonding. The partial debonding was modeled via extended FEM (XFEM) with a crack initiation criterion. An integral averaging technique was employed to predict stress and strain at the macro‐scale. Based on the observations in this work, hysteresis and energy dissipation decrease with the addition of the short fibers to the neat rubber and surface modification of the fibers under three‐cycle loading. For example, in the first cycle and for a constant stress of 0.45 MPa, the strain value decreases from 0.25 to 0.17 MPa at the loading‐unloading rate of 10 mm/min. The high‐fidelity model developed in this work for short fiber/rubber composites is able to predict the stress and strain responses of the SCF/SBR composites, confirming the accuracy of the utilized multiscale approach.

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Experimental and numerical study on scratch performance of additively manufactured continuous carbon fibre reinforced polyamide 6 composites

Cited by 10 publications

References 38 publications

Tribological anisotropy of PEEK composites filled with highly oriented carbon fibers manufactured by fused deposition modeling

Tribological anisotropy of PEEK composites filled with highly oriented carbon fibers manufactured by fused deposition modeling

Study on three major carbon fiber composites

Effects of nonlinear hyper‐viscoelasticity and matrix/fiber debonding on the mechanical properties of short carbon fiber/styrene‐butadiene rubber composites under cyclic uniaxial loading using a multiscale finite element model

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