Evaluating mechanical efficiency of glass fibres in a polymer profile

Gribniak, Viktor; Rimkus, Arvydas; Plioplys, Linas; Misiūnaitė, Ieva; Boris, Renata; Pravilonis, Tautvydas

doi:10.1016/j.polymertesting.2021.107338

Cited by 3 publications

(3 citation statements)

References 21 publications

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“…Thus, the S-10 and S-15 specimen groups did not fully exploit the mechanical properties of GFRP material. In contrast, the S-6 specimens reached the strength limit and demonstrated the efficient utilization of the GFRP material expressed in terms of the theoretical resistance of the reinforced composite [ 40 ].…”

Section: Discussion Of the Test Resultsmentioning

confidence: 99%

“…The previous results [ 35 , 40 ] demonstrated the decisive contribution of numerical methods to evaluating the mechanical efficiency of composite systems. Therefore, this study involves a finite element (FE) analysis tool to reveal the mechanisms behind the mechanical resistance of the support joints of GFRP columns.…”

Section: Discussion Of the Test Resultsmentioning

confidence: 99%

“…Still, references [ 37 , 38 ] focused on relatively long elements, not considering the localized material failure in the support regions. Thus, the local GFRP resistance must be revised to investigate the local failure mechanisms essential for developing reliable manufacturing technologies, design methods, and numerical models [ 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

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The Material Heterogeneity Effect on the Local Resistance of Pultruded GFRP Columns

Zhu,

Gribniak,

Ding

et al. 2023

Materials

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Pultruded GFRP (glass fiber-reinforced polymer) materials are widely used in structural engineering because of their lightweight, corrosion immunity, and electromagnetic transparency. However, the design of load-bearing components facing substantial compressive stresses, e.g., columns, must be more stringent than steel structures due to excessive deformability, material heterogeneity, and vulnerability to stress concentration. This manuscript investigates the failure performance of locally produced GFRP materials, focusing on the material heterogeneity effect on the mechanical resistance of a support joint of a pultruded tubular GFRP column. This experimental campaign employs relatively short rectangular profile fragments to isolate the support behavior and verify a simplified numerical finite element model, which neglects the nonlinearity of GFRP material. This work determines the material failure mechanisms behind the mechanical performance of pultruded profiles subjected to longitudinal compression for various column lengths.

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Section: Discussion Of the Test Resultsmentioning

confidence: 99%

Section: Discussion Of the Test Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Material Heterogeneity Effect on the Local Resistance of Pultruded GFRP Columns

Zhu,

Gribniak,

Ding

et al. 2023

Materials

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Analysing the Confinement Effect in Hollow Core Steel-Concrete Composite Columns under Axial Compression

Šapalas

Mudrov

2021

Materials

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Spun concrete technology allows manufacturing the reinforced concrete poles, piles, and columns with a circular hollow core. This concreting method ensures higher concrete density and strength than the traditional vibration technique and self-compacting concrete. This technology defines an attractive alternative for producing steel-concrete composite elements, allowing efficient utilisation of the materials due to the confinement effect. This study experimentally investigates the material behaviour of the composite columns subjected to axial compression. The experimental results support the above inference—the test outcomes demonstrate the 1.2–2.1 times increase of the compressive strength of the centrifugal concrete regarding the vibrated counterpart; the experimental resistance of the composite columns 1.25 times exceeds the theoretical load-bearing capacity. The proposed mechanical-geometrical parameter can help to quantify the composite efficiency. The parametric analysis employs the finite element model verified using the test results. It demonstrates a negligible bond model effect on the deformation prediction outcomes, indirectly indicating the steel shell confinement effect and confirming the literature results.

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Continuously Reinforced Polymeric Composite for Additive Manufacturing—Development and Efficiency Analysis

2022

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Additive manufacturing (AM) is a rapidly growing technology, referring to a 3D design process by which digital data builds a physical object in layers by depositing the printed material. The AM has evolved in the aviation, automotive, and medical industries. The AM development for fiber-reinforced composites is the point of current interest, with most research focused on using short fibers. However, notwithstanding particular technological complexities, continuous filaments have superior tensile properties compared to short fibers. Therefore, this manuscript develops an adaptive continuous reinforcement approach for AM based on polymeric material extrusion (ME) technology. It combines the raw material production process, including the ability to varying constituents (e.g., filament materials, reinforcement percentage, and recycled plastic replacement ratio), and the reinforcement efficiency analysis regarding the experimentally verified numerical model. The literature review has identified compatible materials for ensuring sustainable and high-performance plastic composites reinforced with continuous fibers. In addition, it identified the applicability of recycled polymers in developing ME processes. Thus, the study includes an experimental program to investigate the mechanical performance of 3D printed samples (polylactic acid, PLA, matrix reinforced with continuous aramid filament) through a tensile test. Recycled polymer replaced 40% of the virgin PLA. The test results do not demonstrate the recycled polymer’s negative effect on the mechanical performance of the printed samples. Moreover, the recycled material reduced the PLA cost by almost twice. However, together with the potential efficiency of the developed adaptive manufacturing technology, the mechanical characteristics of the printed material revealed room for printing technology improvement, including the aligned reinforcement distribution in the printed product and printing parameters’ setup.

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Evaluating mechanical efficiency of glass fibres in a polymer profile

Cited by 3 publications

References 21 publications

The Material Heterogeneity Effect on the Local Resistance of Pultruded GFRP Columns

The Material Heterogeneity Effect on the Local Resistance of Pultruded GFRP Columns

Analysing the Confinement Effect in Hollow Core Steel-Concrete Composite Columns under Axial Compression

Continuously Reinforced Polymeric Composite for Additive Manufacturing—Development and Efficiency Analysis

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