Elastic Constants of Polymeric Fiber Composite Estimation Using Finite Element Method

Itu, Calin; Scutaru, Maria Luminita; Vlase, Sorin

doi:10.3390/polym16030354

Cited by 3 publications

(1 citation statement)

References 41 publications

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“…By using short natural fibers from plane tree ( Platanus orientalis L.) fruits, Atabek Savas 2022 [ 2 ] examined the mechanical characteristics of polypropylene composites. Moreover, it is possible to utilize numerical methods to evaluate the mechanical performance of the new extracted fibers in the literature [ 15 ] instead of time-consuming and expensive experimental techniques. Considering earlier studies, it is evident that most of the studies in the literature have focused on the fruit of the plane tree or its fiber.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Lightweight Platanus orientalis L. Fruit’s Stem Fiber and Determination of Its Mechanical and Physico-Chemical Properties and Potential of Its Use in Composites

Kaya

2024

Polymers

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Natural fibers extracted from plants are preferred as an alternative to synthetic products. The main reasons for this preference are their affordable cost, light weight and good mechanical properties. However, finding new natural raw materials is challenging due to growth limitations in different geographical areas. Platanus orientalis L. (Eastern plane tree) is a tree with abundant fruits that can grow in many regions of the world. The aim of this study was to determine the mechanical (tensile strength, tensile modulus, elongation), physical (density, fiber diameter) and chemical (cellulose, hemicellulose and lignin) properties of Platanus orientalis L. fruit’s stem by fiber extraction from the stems of the tree. It was determined that the extracted fiber had good mechanical properties and cellulose content of 42.03%. As a result of thermogravimetric analysis, it was determined that the plane tree fruit’s stem fiber had thermal resistance of up to 299 °C. The tensile strength value was 157.76 MPa, the tensile modulus value was 1.39 GPa and the elongation value was 22.01%. It was determined that it is suitable for use in fiber reinforcement in thermoplastic-based composites at temperatures below 299 °C. According to the results obtained by the mechanical, chemical and physical analysis of Platanus orientalis L. fruit’s stem fiber (PoLfs), it could be recommended as a suitable alternative as a reinforcing fiber in thermoplastic and thermoset composites.

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Section: Introductionmentioning

confidence: 99%

Extraction of Lightweight Platanus orientalis L. Fruit’s Stem Fiber and Determination of Its Mechanical and Physico-Chemical Properties and Potential of Its Use in Composites

Kaya

2024

Polymers

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The Quick Determination of a Fibrous Composite’s Axial Young’s Modulus via the FEM

Itu,

Scutaru,

Vlase

2024

Applied Sciences

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Knowing the mechanical properties of fiber-reinforced composite materials, which are currently widely used in various industrial branches, represents a major objective for designers. This happens when new materials are used that are not yet in production or for which the manufacturer cannot give values. Given the practical importance of this problem, several methods of determining these properties have been proposed, but most of them are laborious and require a long calculation time. And, some of the proposed calculation methods are very approximate, providing only upper and lower limits for these values. Experimental measurements are obviously the optimal solution for solving this problem, but it must be taken into account that this type of method consumes time and material resources. This paper proposes a sufficiently accurate and fast estimation method for determining Young’s modulus for a homogenized fibrous material. Thus, the FEM is used to determine the natural frequencies of a standard bar, for which there are sufficiently precise classical methods to express the engineering constants according to the mechanical properties of the component phases of the homogenized material. In this paper, Young’s modulus is determined for such a material using the relationships that provide the eigenfrequencies for the longitudinal vibrations. With the adopted model, transverse and torsional vibrations are eliminated by blocking the nodes on the surfaces of the bars. In this way, more longitudinal eigenfrequencies can be obtained, so the precision in calculating Young’s modulus is increased.

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Non-Destructive Testing for Evaluation of Young’s Modulus by Using Free Vibration Response of Composite Materials

Apsan,

Mitu,

Neagoe

et al. 2024

Applied Sciences

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This article presents a non-destructive method, based on the response to free vibrations, which can be used with efficiency and reliability to determine the Young’s modulus of polymer composite materials reinforced with natural or synthetic fibers. The non-destructive tests are carried out by measuring the frequencies of bending free vibrations of cantilever beams with additional masses. By using inverse methods, the experimental values of elasticity modulus E are assessed and validated by numerical simulation, using the finite element method (FEM). For FEM modeling, the materials are considered linear, homogeneous, isotropic, and viscoelastic.

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Elastic Constants of Polymeric Fiber Composite Estimation Using Finite Element Method

Cited by 3 publications

References 41 publications

Extraction of Lightweight Platanus orientalis L. Fruit’s Stem Fiber and Determination of Its Mechanical and Physico-Chemical Properties and Potential of Its Use in Composites

Extraction of Lightweight Platanus orientalis L. Fruit’s Stem Fiber and Determination of Its Mechanical and Physico-Chemical Properties and Potential of Its Use in Composites

The Quick Determination of a Fibrous Composite’s Axial Young’s Modulus via the FEM

Non-Destructive Testing for Evaluation of Young’s Modulus by Using Free Vibration Response of Composite Materials

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