The use of image analysis in evaluation of the
fibers orientation in Wood-polymer composites
(WPC)

Bednarz, Arkadiusz; Frącz, Wiesław; Janowski, Grzegorz

doi:10.1515/eng-2016-0099

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…Elastic properties of composites are mostly calculated based on the Halpin-Tsai micromechanical model [8]: (3) wherein: (4) where: P -appropriate modules of the composite (shown in Table 1 [8]), P f , P m -respectively, the modules for the fiber and matrix, ζ -parameter depends on the composite characteristics, V -the volume fraction of fibers in the polymer matrix, f -index that specifies a reference to the fiber, m -index that specifies a reference to the matrix. Moreover, in order to determine coefficients of thermal expansion the Rosen-Hashin model was applied [14].…”

Section: The Fibers Orientation Calculationsmentioning

confidence: 99%

“…In many cases, depending on the polymer matrix, they can be processed as thermoplastics. Polymer matrix filled with wood flour or fiber exhibit favorable mechanical properties, greater rigidity, lower water absorption, die swelling and lower linear shrinkage [4,15,16,18]. WPC composites pose no threat to the environment in the course of treatment and recycling processes [3,13].…”

Section: Introductionmentioning

confidence: 99%

“…In the most effective structure the fibers are unidirectionally aligned. In order to predict the mechanical properties of molded piece, it is necessary to simulate the filling process of the fiber reinforced plastic and an analysis of fiber orientation [4].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Fiber Orientation in the Wood-Polymer Composites (WPC) on Selected Examples

Frącz¹,

Janowski²

2017

Adv. Sci. Technol. Res. J.

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The fibers orientation in the polymer matrix is an important factor determining mechanical properties of products made of composites by means of an injection molding process. The fibers arrangement has an effect on shrinkage of the composite and the dimensional accuracy of molded piece. The knowledge of fiber orientation can determine the proper dimensions and design of the molding cavities and then correct some of physical and mechanical properties of the molded piece. The orientation of fillers depends on many factors, among which the important role play processing parameters including the injection speed. The aim of this study was to assess the orientation of the fibers in wood-polymer composite on the selected examples. The knowledge and proper use of micromechanical models allow to evaluate the fibers flow and their orientation in polymer matrix. The research was performed both for numerical simulations and experimental studies for results verification.

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Section: The Fibers Orientation Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Fiber Orientation in the Wood-Polymer Composites (WPC) on Selected Examples

Frącz¹,

Janowski²

2017

Adv. Sci. Technol. Res. J.

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“…The second direction of the application of micromechanical models may be forecasting of polymer composites with short fibers processing using Autodesk Moldflow Insight (AMI) software. The current capabilities of simulation software allow, in some areas, for the verification of experimental data [ 6 , 7 ] to assess the effectiveness of the application of appropriate micromechanical models, as well as to assess the possibility of manufacturing a specific product. The injection molding simulation of products made of composites filled by short cellulose fibers is a problematic issue.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Properties Prediction of Poly [(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) Biocomposites on a Chosen Example

2022

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This paper aims to experimentally determine the properties of the poly [(3-hydroxybutyrate)-co-(3-hydroxyvalerate)]—(PHBV)—30% hemp fiber biocomposite, which is important in terms of numerical simulations of product manufacturing, and to evaluate the mechanical properties by means of micromechanical modeling. The biocomposite was manufactured using a single-screw extruder. Specimens for testing were produced by applying the injection molding technology. Utilizing the simulation results of the plastic flow, carried out by the Moldflow Insight 2016 commercial software and the results of experimental tests, the forecasts of selected composite mechanical properties were performed by means of both numerical and analytical homogenization methods. For this purpose, the Digimat software was applied. The necessary experimental data to perform the calculations for the polymer matrix, fibers, and the biocomposite were obtained by rheological and thermal studies as well as elementary mechanical tests. In the paper, the method of determining selected properties of the biocomposite and the method of forecasting its other properties are discussed. It shows the dependence of the predicted, selected properties of the biocomposite on the filler geometry assumed in the calculations and the homogenization method adopted for the calculations. The results of the work allow for the prediction of properties of the PHBV biocomposites—hemp fiber for any amount of filler used. Moreover, the results allow for the estimation of the usefulness of homogenization methods for the prediction of properties of the PHBV-hemp fiber biocomposites. Furthermore, it was found that for the developed and tested biocomposites, the most effective possibility of mechanical properties prediction is using the Mori-Tanaka homogenization model, which unfortunately has some limitations.

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Advanced Materials from Forests

Mitchell¹,

Gaspar²,

Mateus³

et al. 2018

Handbook of Ecomaterials

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The use of image analysis in evaluation of the fibers orientation in Wood-polymer composites (WPC)

Cited by 6 publications

References 13 publications

Analysis of Fiber Orientation in the Wood-Polymer Composites (WPC) on Selected Examples

Analysis of Fiber Orientation in the Wood-Polymer Composites (WPC) on Selected Examples

The Mechanical Properties Prediction of Poly [(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) Biocomposites on a Chosen Example

Advanced Materials from Forests

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