Evaluating the effectiveness of nanofillers in filament wound carbon/epoxy multiscale composite pipes

Üstün, Tugay; Ulus, Hasan; Karabulut, Salim Eğemen; Eskizeybek, Volkan; Şahi̇n, Ömer Sinan; Avcı, Ahmet; Demir, Okan

doi:10.1016/j.compositesb.2016.04.031

Cited by 35 publications

(12 citation statements)

References 47 publications

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“…This method has several differences compared to the classic filament winding technique [32]. In the classical method, the winding process is considered with a constant speed of the tool and filament while the tool has a high stiffness resistance to bending.…”

Section: = (2 ) + ( )mentioning

confidence: 99%

Development of a Robot-Based Multi-Directional Dynamic Fiber Winding Process for Additive Manufacturing Using Shotcrete 3D Printing

Hack

Bahar

Hühne

et al. 2021

Fibers

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The research described in this paper is dedicated to the use of continuous fibers as reinforcement for additive manufacturing, particularly using Shotcrete. Composites and in particular fiber reinforced polymers (FRP) are increasingly present in concrete reinforcement. Their corrosion resistance, high tensile strength, low weight, and high flexibility offer an interesting alternative to conventional steel reinforcement, especially with respect to their use in Concrete 3D Printing. This paper presents an initial development of a dynamic robot-based manufacturing process for FRP concrete reinforcement as an innovative way to increase shape freedom and efficiency in concrete construction. The focus here is on prefabricated fiber reinforcement, which is concreted in a subsequent additive process to produce load-bearing components. After the presentation of the fabrication concept for the integration of FRP reinforcement and the state of the art, a requirements analysis regarding the mechanical bonding behavior in concrete is carried out. This is followed by a description of the development of a dynamic fiber winding process and its integration into an automated production system for individualized fiber reinforcement. Next, initial tests for the automated application of concrete by means of Shotcrete 3D Printing are carried out. In addition, an outlook describes further technical development steps and provides an outline of advanced manufacturing concepts for additive concrete manufacturing with integrated fiber reinforcement.

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Section: = (2 ) + ( )mentioning

confidence: 99%

Development of a Robot-Based Multi-Directional Dynamic Fiber Winding Process for Additive Manufacturing Using Shotcrete 3D Printing

Hack

Bahar

Hühne

et al. 2021

Fibers

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show abstract

“…[24][25][26] Various nanoparticles are used to enhance the fibermatrix interface resistance of fiber-reinforced composite materials. [27][28][29] Natural and new types of reinforcements HNTs are of interest in improving the mechanical, tribological, and thermal properties of composites. [30][31][32][33] Besides, HNTs have a high length-to-width ratio, which increases the mechanical properties of composites by transferring the load from the matrix to the fibers.…”

Section: Introductionmentioning

confidence: 99%

The effect of halloysite nanotube modification on wear behavior of carbon‐aramid fiber reinforced hybrid nanocomposites

et al. 2021

Self Cite

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In this study, the carbon-aramid fiber reinforced hybrid composites are fabricated using a vacuum-assisted hand lay-up method using halloysite nanotubes (HNTs) modified epoxy matrix. Ball-on-disk wear tests are performed to analyze the tribological effect of neat and HNTs-added specimens at 10, 15, and 20 N loads and 1 m/s sliding speed. Additionally, the wear rate and friction coefficient results are obtained to investigate the effect of the HNTs on the tribological behavior of hybrid composites. The wear mechanism of neat and nanocomposite specimens is specified by scanning electron microscopy (SEM) images, and the elemental analysis of worn surfaces is performed using EDX. Finally, the surface morphology is evaluated with 3D topography images.Additionally, thermal camera images are used to identify the thermal conductivity effect of HNTs on wear. The wear test results show that HNTs-addition to composite decreased the friction coefficient by 9%, 10%, and 11% for 10 N, 15 N, and 20 N loadings, respectively. The wear rate is also decreased average by 75% for wear loadings. Surface form images acquired from 3D topography

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“…[1][2][3] However, because of the significant difference in their strength, modulus, and heat resistance compared with metal materials, high-density polyethylene (HDPE) pipes have limited use in certain pressure application scenarios. [4] Adding special fillers and additives, [5][6][7] filament winding reinforcement, [8,9] centrifugal winding, [10] and steel belt winding [11] can effectively enhance the strength of polymer pipes.…”

Section: Introductionmentioning

confidence: 99%

Effect of annular expansion pipe extruder head on mechanical properties of pipes

Pan

Wang

et al. 2021

Polymer Engineering & Sci

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With polymer pipes being used more commonly, performance requirements are increasing. Studies on the enhancement of mechanical properties of polymer pipes are particularly important. In this study, a self-designed annular expansion pipe extruder head was used to enhance the mechanical properties of HDPE pipes. Different morphologies of the HDPE pipes were produced under different processing conditions. When the extrusion angle was 30 (P30), the best mechanical properties were obtained. The hoop tensile strength and axial tensile strength were 14.5% and 41.0% higher, respectively, compared with the specimen without expansion (P0). This improvement of mechanical properties can be attributed to several reasons. First, the processing parameters of P30 reached the threshold shear rate and strain for shish-kebab formation, as shown by scanning electron microscopy. Second, P30 has the highest orientation parameter and crystallinity of 0.679 and 67.27%, respectively, from 2D wide-angle diffraction (WAXD). Polarized FTIR shows the same trend as 2D-WAXD. Third, the outer bamboo-like self-reinforced structure is formed inside the pipe at 30 expansion angle while the core layer has a well-formed crystal structure; the special structure improves the overall performance of HDPE pipe. This method can be utilized in large-scale industrial production.

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Evaluating the effectiveness of nanofillers in filament wound carbon/epoxy multiscale composite pipes

Cited by 35 publications

References 47 publications

Development of a Robot-Based Multi-Directional Dynamic Fiber Winding Process for Additive Manufacturing Using Shotcrete 3D Printing

Development of a Robot-Based Multi-Directional Dynamic Fiber Winding Process for Additive Manufacturing Using Shotcrete 3D Printing

The effect of halloysite nanotube modification on wear behavior of carbon‐aramid fiber reinforced hybrid nanocomposites

Effect of annular expansion pipe extruder head on mechanical properties of pipes

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