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    Wyświetlanie 1-6 z 6
    Tytuł:
    Enhancement of Tensile Properties of Glass Fibre Epoxy Laminated Composites Reinforced with Carbon Nanotubes interlayer using Electrospray Deposition
    Autorzy:
    Zakaria, Muhammad Razlan
    Omar, Mohd Firdaus
    Akil, Hazizan Md
    Othman, Muhammad Bisyrul Hafi
    Al Bakri Abdullah, Mohd Mustafa
    Powiązania:
    https://bibliotekanauki.pl/articles/2106596.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    glass fibre
    carbon nanotubes
    hybrid material
    epoxy laminated composites
    Opis:
    The introduction of carbon nanotubes (CNTs) onto glass fibre (GF) to create a hierarchical structure of epoxy laminated composites has attracted considerable interest due to their merits in improving performance and multifunctionality. Field emission scanning electron microscopy (FESEM) was used to analyze the woven hybrid GF-CNT. The results demonstrated that CNT was successfully deposited on the woven GF surface. Woven hybrid GF-CNT epoxy laminated composites were then prepared and compared with woven GF epoxy laminated composites in terms of their tensile properties. The results indicated that the tensile strength and tensile modulus of the woven hybrid GF-CNT epoxy laminated composites were improved by up to 9% and 8%, respectively compared to the woven hybrid GF epoxy laminated composites.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 2; 685--690
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of Injection Moulding Process via Design of Experiment (DOE) Method based on Rice Husk (RH) Reinforced Low Density Polyethylene (LDPE) Composite Properties
    Autorzy:
    Jaya, Haliza
    Zulkepli, Nik Noriman
    Omar, Mohd Firdaus
    Abd Rahim, Shayfull Zamree
    Nabiałek, Marcin
    Jeż, Kinga
    Al Bakri Abdullah, Mohd Mustafa
    Powiązania:
    https://bibliotekanauki.pl/articles/2106601.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    injection moulding
    design of experiments
    DOE
    central composite design
    response surface methodology
    RSM
    shrinkage
    tensile strength
    Opis:
    Optimal parameters setting of injection moulding (IM) machine critically effects productivity, quality, and cost production of end products in manufacturing industries. Previously, trial and error method were the most common method for the production engineers to meet the optimal process injection moulding parameter setting. Inappropriate injection moulding machine parameter settings can lead to poor production and quality of a product. Therefore, this study was purposefully carried out to overcome those uncertainty. This paper presents a statistical technique on the optimization of injection moulding process parameters through central composite design (CCD). In this study, an understanding of the injection moulding process and consequently its optimization is carried out by CCD based on three parameters (melt temperature, packing pressure, and cooling time) which influence the shrinkage and tensile strength of rice husk (RH) reinforced low density polyethylene (LDPE) composites. Statistical results and analysis are used to provide better interpretation of the experiment. The models are form from analysis of variance (ANOVA) method and the model passed the tests for normality and independence assumptions.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 2; 719--727
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hierarchical Carbon Fiber-Carbon Nanotubes by Using Electrospray Deposition Method with Preserved Tensile Properties
    Autorzy:
    Zakaria, Muhammad Razlan
    Akil, Hazizan Md
    Omar, Mohd Firdaus
    Al Bakri Abdullah, Mohd Mustafa
    Rahim, Shayfull Zamree Abd
    Nabiałek, Marcin
    Wysłocki, Jerzy J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174561.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid materials
    carbon nanotubes
    carbon fiber
    Opis:
    In this study, the electrospray deposition (ESD) method was used to deposit carbon nanotubes (CNT) onto the surfaces of carbon fibers (CF) in order to produce hybrid carbon fiber-carbon nanotubes (CF-CNT) which is rarely reported in the past. Extreme high-resolution field emission scanning electron microscopy (XHR-FESEM), high-resolution transmission electron microscopy (HRTEM) and x-ray photoelectron spectroscopy (XPS) were used to analyse the hybrid carbon fiber-carbon nanotube (CF-CNT). The results demonstrated that CNT was successfully and homogenously distributed on the CF surface. Hybrid CF-CNT was then prepared and compared with CF without CNT deposition in terms of their tensile properties. Statistically, the tensile strength and the tensile modulus of the hybrid CF-CNT were increased by up to 3% and 25%, respectively, as compared to the CF without CNT deposition. The results indicated that the ESD method did not cause any reduction of tensile properties of hybrid CF-CNT. Based on this finding, it can be prominently identified some new and significant information of interest to researchers and industrialists working on CF based products.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1299--1304
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface Integrity Evaluation on Aluminium-Epoxy Composite in Machining using Taguchi Method
    Autorzy:
    Leong, Kean Wei
    Shayful, Zamree Abd Rahim
    Fathullah, M.
    Omar, Mohd Firdaus
    Mohd Mustafa Al Bakri, Abdullah
    Radhwan, Husin
    Mazlan, Amirul Haziq
    Jeż, Bartłomiej
    Nabiałek, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2048837.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid mold
    metal epoxy composite
    MEC
    machining
    injection molding process
    Opis:
    The increasing needs of using aluminum epoxy composite as a replacement to solid metal rapid prototyping has opened to interests in optimizing its machining processes. This paper reported on the success of optimizing the surface roughness of aluminium epoxy composite using milling process along with a new finding on the best combination parameters. Taguchi method was used as the optimization method whereas spindle speed, feed rate, and depth of cut were set as input factors using an L9 Orthogonal Array. Analysis of Variance was used to identify the significant factors influencing the surface roughness. Experiment was conducted in dry condition using a vertical milling machine and the surface roughness after the machining was evaluated. Optimum combination of cutting parameters was identified after the finest surface roughness (response) based on the signal-to-noise ratio calculated. Cutting parameters selected after preliminary testing are cutting speeds of (2000, 3000 and 4000) rpm, feed rate (300, 400 and 500) mm/min, and cutting depth (0.15, 0.20, and 0.25) mm. The result showed that cutting speed had the largest percentage contribution to surface roughness with 69% and the second highest contribution was feed rate with 22% and depth of cut at 9%. The spindle speed was found as the most significant factor influencing the quality of surface roughness. The result is significant particularly in providing important guidelines for industries in selecting the right combination of parameters as well as to be cautious with the most significant factor affecting the milling process of metal epoxy composite.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 1; 233-239
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Filler Surface Modification on Static and Dynamic Mechanical Responses of Rice Husk Reinforced Linear Low-Density Polyethylene Composites
    Autorzy:
    Omar, Mohd Firdaus
    Al Bakri Abdullah, Mohd Mustafa
    Ting, Sam Sung
    Jeż, Bartłomiej
    Nabiałek, Marcin
    Md Akil, Hazizan
    Zulkepli, Nik Noriman
    Abd Rahim, Shayfull Zamree
    Azmi, Azida
    Powiązania:
    https://bibliotekanauki.pl/articles/2106572.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    silane coupling agents
    strain rate
    universal testing machine
    split Hopkinson pressure bar
    strain rate sensitivity
    Opis:
    Filler surface modification has become an essential approach to improve the compatibility problem between natural fillers and polymer matrices. However, there is limited work that concerns on this particular effect under dynamic loading conditions. Therefore, in this study, both untreated and treated low linear density polyethylene/rice husk composites were tested under static (0.001 s-1, 0.01 s-1 and 0.1 s-1) and dynamic loading rates (650 s-1, 900 s-1 and 1100 s-1) using universal testing machine and split Hopkinson pressure bar equipment, respectively. Rice husk filler was modified using silane coupling agents at four different concentrations (1, 3, 5 and 7% weight percentage of silane) at room temperature. This surface modification was experimentally proven by Fourier transform infrared and Field emission scanning electron microscopy. Results show that strength properties, stiffness properties and yield behaviour of treated composites were higher than untreated composites. Among the treated composites, the 5% silane weight percentage composite shows the optimum mechanical properties. Besides, the rate of sensitivity of both untreated and treated composites also shows great dependency on strain rate sensitivity with increasing strain rate. On the other hand, the thermal activation volume shows contrary trend. For fracture surface analysis, the results show that the treated LLDPE/RH composites experienced less permanent deformation as compared to untreated LLDPE/RH composites. Besides, at dynamic loading, the fracture surface analysis of the treated composites showed good attachment between RH and LLDPE.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 2; 507--519
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical and Dielectric Properties of Hybrid Carbon Nanotubes-Woven Glass Fibre Reinforced Epoxy Laminated Composites via the Electrospray Deposition Method
    Autorzy:
    Zakaria, Muhammad Razlan
    Khairuddin, Nur Aishahatul Syafiqa Mohammad
    Omar, Mohd Firdaus
    Akil, Hazizan Md
    Othman, Muhammad Bisyrul Hafi
    Al Bakri Abdullah, Mohd Mustafa
    Abd Rahim, Shayfull Zamree
    Ting, Sam Sung
    Azmi, Azida
    Powiązania:
    https://bibliotekanauki.pl/articles/2106599.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    glass fibre
    carbon nanotubes
    hybrid material
    epoxy laminated composites
    Opis:
    Herein, the effects of multi-walled carbon nanotubes (CNTs) on the mechanical and dielectric performance of hybrid carbon nanotube-woven glass fiber (GF) reinforced epoxy laminated composited are investigated. CNTs are deposited on woven GF surface using an electrospray deposition method which is rarely reported in the past. The woven GF deposited with CNT and without deposited with CNT are used to produce epoxy laminated composites using a vacuum assisted resin transfer moulding. The tensile, flexural, dielectric constant and dielectric loss properties of the epoxy laminated composites were then characterized. The results confirm that the mechanical and dielectric properties of the woven glass fiber reinforced epoxy laminated composited increases with the addition of CNTs. Field emission scanning electron microscope is used to examine the post damage analysis for all tested specimens. Based on this finding, it can be prominently identified some new and significant information of interest to researchers and industrialists working on GF based products.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 2; 669--675
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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