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  • 1.
    Kadi, Nawar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business. University of Borås.
    Baghaei, Behnaz
    University of Borås, Faculty of Textiles, Engineering and Business. University of Borås.
    Skrifvars, Mikael
    University of Borås, Faculty of Textiles, Engineering and Business. University of Borås.
    Effect of Textile structure in the process parameters of thermoplastic bio-composite2019In: MATEC Web of Conferences, E-ISSN 2261-236X, Vol. 261, no 01005, p. 1-3Article in journal (Other academic)
    Abstract [en]

    Thermoplastic bio-composite have a higher potential of use based on the sustainability benefits. Natural fibres today are a popular choice for applications in biocomposite manufacturing. Hybrid yarns are a satisfactory solution to improve the fabrication of composites containing a thermoplastic matrix and plant-based fibres. Nevertheless, it is still difficult to produce bio-composites with superior mechanical properties, due to problematic impregnation and consolidation results during the production process. This paper investigates the processing parameters for the compression moulding of two different hemp/PLA textiles structure bio-composites (warp knitting and weaving structure). Finite element simulations are used to optimise the processing parameters (pressure, temperature, and time). The results demonstrated that the textile structure has a small effect on the time of production. Main while the pressure and temperature of processing parameters depend only on the type of matrix and the thickness of biocomposite has a big impact on the time of production.

  • 2.
    Kadi, Nawar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Baghaei, BehnazUniversity of Borås, Faculty of Textiles, Engineering and Business.Skrifvars, MikaelUniversity of Borås, Faculty of Textiles, Engineering and Business.
    The effect of process parameters on the mechanical properties of thermoplastic bio-composite2018Conference proceedings (editor) (Refereed)
  • 3.
    Kadi, Nawar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Baghaei, Behnaz
    University of Borås, Faculty of Textiles, Engineering and Business.
    Skrifvars, Mikael
    University of Borås, Faculty of Textiles, Engineering and Business.
    Using Finite Element Simulation to Optimize Thermoplastic Bio - Composites Process Parameters2018In: International Journal of Management and Applied Science, ISSN 2394-7926, Vol. 4, p. 73-75Article, book review (Refereed)
    Abstract [en]

    The use of thermoplastic composite is clearly of higher potential because of: good impact strength, easier recycling, faster processing conditions (no time for curing is required), possibility of production in longer series, lower cost, absence of toxic solvents and higher fracture toughness and elongation on the fracture. Natural fibres today are a popular choice for applications in composite manufacturing. In fact, a major challenge for natural fibre reinforced composites is to achieve high mechanical performance at competitive prices. This paper investigates the processing parameters for the compression moulding of hemp/PLA hybrid yarn bio-composites and their effect on the final mechanical properties. Finite element simulations are used to develop and assess the processing parameters pressure, temperature, and time. The application of the simulation analysis results in considerably reduced the processing times from initially 10 minutes to only 2 minutes, and improved the mechanical bio-composite

  • 4.
    Kadi, Nawar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Muhandes, HasanKalácska, GáborSkrifvars, MikaelUniversity of Borås, Faculty of Textiles, Engineering and Business.
    Pin-on-Plate Abrasive Wear Test For Several Composite Materials2018Conference proceedings (editor) (Refereed)
  • 5.
    Kadi, Nawar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Skrifvars, Mikael
    University of Borås, Faculty of Textiles, Engineering and Business.
    Muhandes, Hasan
    Kalácska, Gábor
    Thermoplastic biocomposite based on cellulose fibers2017Conference paper (Refereed)
  • 6.
    Kadi, Nawar
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Skrifvars, Mikael
    University of Borås, Faculty of Textiles, Engineering and Business.
    Peterson, Joel
    University of Borås, Faculty of Textiles, Engineering and Business.
    Holmudd, Olle
    University of Borås, Faculty of Textiles, Engineering and Business.
    Karnoub, Amer
    University of Aleppo.
    The Effect of Warp Tension on the Colour of Jacquard Fabric2017In: IOP Conference Series: Materials Science and Engineering, 2017, Vol. 254, article id 082014Conference paper (Other (popular science, discussion, etc.))
    Abstract [en]

    The aims of this paper is to demonstrate the effect of warp tension on fabric colour for several types of weaves structures, and found a relationship between them. The image analyse technique used to determine the proportion of yarns colour appearance, the advantage of this techniques is the rapidity and reliability. The woven fabric samples are consisting of a polyester warp yarn with continuous filaments and density of 33 end/cm, a polypropylene weft yarn with a density of 24 pick/cm, and the warp tension ranged between 12-22 cN/tex. The experimental results demonstrated the effect of the warp tension on the colour of fabric, and this effect is related to several factors, where the large proportion of warp appearance leads to larger effect on fabric colour. The difference in the value of colour differences ΔEcmc is larger is in the range 16 to 20 cN/tex of warp tension. Using statistical methods, a mathematical model to calculate the amount of the colour difference ΔEcmc caused by the change in warp tension had been proposed.

  • 7.
    Karnoub, Amer
    et al.
    Aleppo University, Syria.
    Kadi, Nawar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Azari, Zitouni
    ENIM, France.
    Using the expert system to analyze loom performance2017In: Journal of the Textile Institute, ISSN 0040-5000, E-ISSN 1754-2340, Vol. 108Article in journal (Refereed)
  • 8.
    Karnoub, Amer
    et al.
    Faculty of Mechanical Engineering, University of Aleppo.
    Kadi, Nawar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Holmudd, Olle
    University of Borås, Faculty of Textiles, Engineering and Business.
    Peterson, Joel
    University of Borås, Faculty of Textiles, Engineering and Business.
    Skrifvars, Mikael
    University of Borås, Faculty of Textiles, Engineering and Business.
    The Effect of Warp Tension on the Colour of Jacquard Fabric Made with Different Weaves Structures2017In: IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, E-ISSN 1757-899X, Vol. 254Article in journal (Refereed)
    Abstract [en]

    The aims of this paper is to demonstrate the effect of warp tension on fabric colour for several types of weaves structures, and found a relationship between them. The image analyse technique used to determine the proportion of yarns colour appearance, the advantage of this techniques is the rapidity and reliability. The woven fabric samples are consisting of a polyester warp yarn with continuous filaments and density of 33 end/cm, a polypropylene weft yarn with a density of 24 pick/cm, and the warp tension ranged between 12-22 cN/tex. The experimental results demonstrated the effect of the warp tension on the colour of fabric, and this effect is related to several factors, where the large proportion of warp appearance leads to larger effect on fabric colour. The difference in the value of colour differences ΔEcmc is larger is in the range 16 to 20 cN/tex of warp tension. Using statistical methods, a mathematical model to calculate the amount of the colour difference ΔEcmc caused by the change in warp tension had been proposed.

  • 9.
    Lindström, Katarina
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kadi, Nawar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Persson, Anders
    University of Borås, Faculty of Textiles, Engineering and Business.
    Utility of conditioner for reduced interfibre friction as predictor of gentler shredding2018In: Aachen-Dresden-Denkendorf International Textile Conference, Aachen, November 29-30 2018, 2018Conference paper (Other academic)
  • 10.
    Lindström, Katarina
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Sjöblom, Therése
    University of Borås, Faculty of Textiles, Engineering and Business.
    Persson, Anders
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kadi, Nawar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Decreasing Inter-Fiber Friction With Lubricants For Efficient Mechanical Recycling Of Textiles2019In: Autex 19th World Textile Conference: Textiles at the Crossroads, 2019Conference paper (Refereed)
    Abstract [en]

    To decrease the environmental burden of the textile industry and at the same time reduce textile waste, the fibers of discarded textiles can be re-used into new yarns and fabrics. The shortening of fibers during mechanical shredding direct the use of the recovered fibers to low value products. With the use of a lubricant pre-treatment on cotton and polyester fabrics, we decreased the friction during shredding. The reduction in friction was shown with a developed inter-fiber friction test. Further, the pre-treatment was shown to give longer recovered fibers and eliminate melted areas in polyester material.

  • 11.
    Vogt, Sarah
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Baghaei, Behnaz
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kadi, Nawar
    University of Borås, Faculty of Textiles, Engineering and Business.
    Skrifvars, Mikael
    University of Borås, Faculty of Textiles, Engineering and Business.
    Determination of Processing Parameters for Thermoplastic Biocomposites Based on Hybrid Yarns Using Finite Elements Simulation2018In: Journal of Composites Science, ISSN 2504-477X, Vol. 2, no 1Article in journal (Refereed)
    Abstract [en]

    This paper investigates the processing parameters for the compression molding of hemp/PLA hybrid yarn biocomposites and their effect on the final mechanical properties. Finite element simulations are used to develop and assess the processing parameters, pressure, temperature, and time. These parameters are then evaluated experimentally by producing the composites by two different methods, to compare the results of experimentally determined processing conditions to parameters determined by the simulation analysis. The assessment of mechanical properties is done with several experimental tests, showing small improvements for the composites produced with the simulation method. The application of the simulation analysis results in considerably reduced processing times, from the initial 10 min to only three minutes, thereby vastly improving the processing method. While the employed methods are not yet able to produce composites with greatly improved mechanical properties, this study can be seen as a constructive approach, which has the ability to lead to further improvements.

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