Browsing by Author "Mustapha, Kabiru"

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    Effect of Chemically Modified Banana Fibers on the Mechanical Properties of Poly-Dimethyl-Siloxane-Based Composites
    (Journal of Materials and Engineering Structures, 2019-05-18) Danyuo, Yiporo; Zakariyyah, Taiwao; Nasiru, Suleman; Mustapha, Kabiru; Azeko, Tahiru S.; Bello, Sefiu A.; Abade-Abugre, Miriam; Yirijor, John; Anyidoho, Victor; McBAGONLURI, Fred
    The study presents the mechanical properties of polymer-based composites reinforced with chemically modified banana fibers, by alkalization in different concentrations of sodium hydroxide (NaOH). The fiber weight fraction has a great effect on the mechanical properties of the composites. Stiff composites were obtained at 6 wt% fiber fractions with Young’s modulus of 254.00 ±12.70 MPa. Moreover, the yield strength was 35.70 ±1.79 MPa at 6 wt% fiber fractions. However, the ultimate tensile strength (UTS) and toughness of the composites were obtained at 5 wt% fiber fractions. Statistical analyses were used to ascertain the significant different on the mechanical properties of the fibers and composites. The implication of the results is then discussed for potential applications of PDMS-based composites reinforced with chemically modified banana fibers.
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    Strength and fracture resistance of cellulose fiber reinforced cement composite
    (2022-07-26) Mustapha, Kabiru; Sogoye, Michael; Abdulraman, Sikiru Ottan; Danyuo, Yiporo; Tahiru, Azeko Salifu; Annan, Ebenezer
    This study presents the production and experimental assessment of the strengths and fracture resistance of cellulose fiber-reinforced cementitious composite material. The composite, which consists of mixture of recycled fibers obtained from waste carton boxes, was stabilized with measured level of Ordinary Portland Cement. The effects of constituent’s composition on compressive strength, flexural strength and fracture toughness were elucidated. Compressive strengths and flexural strengths were measured using uniaxial compressive and three-point bend loading conditions respectively while a single edge notch bend test (SENB) condition was employed for the fracture toughness measurement. The results obtained from experiments showed that the composite properties are significantly improved by the fiber reinforcement with optimum properties obtained at fiber composition of 5wt. % with compressive strength of 24.4 MPa, flexural strength of 8.0 MPa and fracture toughness of 1.36 MPa√m. The results were discussed for possible applications of robust cellulose fiber reinforced cement composite materials suitable for interior structural applications and to provide potential opportunities for waste management and/or recycling of carton boxes and other related wastes.
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    Theoretical modeling of flow for frustum - shaped ceramic water filters via disc-shaped ceramic water filters
    (ARPN Journal of Engineering and Applied Sciences, 2019-12-24) Bensah, Yaw Delali; Damoah, Lucas N. W.; Nyankson, Emmanuel; Yaya, Abu; Nukpezah, Daniel; Azeko, Salifu Tahiru; Mustapha, Kabiru; Annan, Ebenezer
    In the past two decades, research on household technologies has been on the increase. Ceramic water filters are simple and appropriate technology proven to have capability to provide improved drinking water especially in rural and peri-urban communities. These filters can be fabricated into various shapes with careful consideration of their mechanical robustness. This paper gives an overview of various flow models in estimating flow rate for ceramic water filters, in particular frustum-shaped ceramic water filters. Analytical approach to estimate the quantity of water considering the geometrical shapes; frustum and cylindrical shapes of the Ceramic water filters are adopted. The analytical expressions deduced for the flows are applicable on the assumption that the materials used in the fabrication of the filters are the same, thus same material properties (chemical and thermal properties) and porosimetry characteristics. Also, the comparative flow equation is largely dependent on dimensions of the ceramic water filters. The scholarly articles on flow through ceramic water filters for frustum-shaped filter are theoretically explored.
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    Uniaxial tensile response of coconut coir fiber-reinforced polyethylene Composites
    (2019) Mustapha, Kabiru; Bello, Sefiu Adekunle; Danyuo, Yiporo; Oshifowora, Tobi
    The roles of Composite materials in a variety of engineering applications have increased due to their enhanced strength and modulus, especially polymer-based composites which is one of the commercially available composites. The uniaxial tensile properties of polyethylene matrix reinforced with coconut coir fibers has been studied and the results from experiments and analytical models are presented. The compositional dependence of tensile strength, stiffness (elastic modulus), modulus of resilience and ductility are explored for different proportions of the constituent materials through experiments and analytical models. The results from experiments showed that the properties measured were greatly affected by the fiber mass fraction with optimized properties obtained at fiber content of 10 wt%.