Journal articles: 'Particle-reinforced composites'

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Konopka, Katarzyna. "Particle-Reinforced Ceramic Matrix Composites—Selected Examples." Journal of Composites Science 6, no. 6 (June 19, 2022): 178. http://dx.doi.org/10.3390/jcs6060178.

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This paper presents some examples of ceramic matrix composites (CMCs) reinforced with metal or intermetallic phases fabricated by powder consolidation without a liquid phase (melted metal). Composites with a complex structure, which are an advanced group of CMCs called hybrid composites, were described in contrast to conventional composites with a ceramic matrix. In advanced CMCs, their complex structures make it possible to achieve the synergistic effect of the micro- and nanoparticles of the metallic, intermetallic, and ceramic phases on the composite properties, which is not possible in conventional materials. Various combinations of substrates in the form of powder as more than one metal and ceramics with different powder sizes that are used to form hybrid composites were analyzed. The types of CMC microstructures, together with their geometrical schemas and some examples of real ceramic matrix composites, were described. The schemas of composite microstructures showed the possible location of the ceramic, metallic, or intermetallic phases in composites. A new concept of an advanced ceramic–intermetallic composite fabricated by the consolidation of pre-composite powder mixed with ceramic powder was also presented. This concept is based on the selection of substrates, two metals in the form of powder, which will form a new compound, intermetallic material, during processing. Metal powders were milled with ceramic powders to obtain a pre-composite powder consisting of intermetallic material and ceramics. In the next step, the consolidation of pre-composite powder with ceramic powder allows the creation of composites with complex microstructures. Selected examples of real particle-reinforced conventional and hybrid microstructures based on our own investigations were presented. In addition to microstructures, the properties and possible applications of CMCs were analyzed.

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Karabulut, Hasan, Kubilay Karacif, Ramazan Çıtak, and Hanifi Çinici. "Corrosion behavior of particle reinforced aluminum composites." Materials Testing 63, no. 12 (December 1, 2021): 1157–63. http://dx.doi.org/10.1515/mt-2021-0037.

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Abstract In the study, the corrosion behavior of aluminum matrix composites reinforced with boron carbide (B4C), silicon carbide (SiC) and alumina (Al2O3) were investigated in saltwater (3.5 % NaCl). Composite materials were produced by powder metallurgy. For composite materials production, various reinforcement and aluminum powders were mixed by mechanical alloying for 4 and 10 hours. After mechanical alloying, mixed powders were compacted under 700 MPa pressure and sintered at 600 °C. Electrochemical corrosion tests were applied on specimens in the saltwater solution using potentiodynamic methods. According to the results of the investigation, the best corrosion resistance was obtained by aluminum/B4C and the lowest by aluminum/Al2O3 composites.

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Ramalho, Amilcar, P. Vale Antunes, M. D. Braga de Carvalho, M. Helena Gil, and J. M. S. Rocha. "Mechanical Properties of Particle Reinforced Resin Composites." Materials Science Forum 514-516 (May 2006): 619–23. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.619.

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The objective of the present work is the evaluation of the contents of inorganic particles in the mechanical and tribological behavior of polymeric matrix composites. In order to control easily the production of the specimens, a polyester resin was used as matrix and silica particles were added as inorganic filler. The volumetric particle content was ranged from 0 to 46%. In order to understand the influence of the inorganic load was evaluated the mechanical and tribological behaviors for several percentage of particle content was evaluated. There are several applications of inorganic fillers where their volume percentage is important, namely in dentistry. In posterior restorative resin materials, the particles percentage in volume goes up to 50 or more. In most cases spherical and irregular shaped fillers are dispersed randomly. In the studied composites the filler has irregular shape therefore the connection between the matrix and the particles is more effective. Function of the shape, concentration degree and particle size of the filler the composite mechanical properties vary greatly. All of these factors influence the mechanical properties of the particlereinforced composite, namely: wear resistance, hardness, flexural modulus, flexure strength and toughness The morphology of the failure surfaces was observed by scanning electron microscopy and the results were widely discussed.

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Zhang, Yue Bo, Bernie Ya Ping Zong, Jian Feng Jin, and Xin Jian Cao. "Effect of Particulate Reinforcement Electroless Plating on Properties of SiC/Fe Composite." Applied Mechanics and Materials 556-562 (May 2014): 302–5. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.302.

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SiC particles were coated with copper and nickel respectively through electroless plating process to investigate the plating effect on mechanical properties of SiCp/Fe composites. It shows that tensile strength and final elongation of the composite improve significantly after the plating treatment of SiC particles. Compared with the composite reinforced by uncoated one, the maximum increase of tensile strength is 20.1% reinforced by nickel-coated SiC particles with the particle size of 21μm and volume fraction of 20%. The maximum tensile strength among the SiCp/Fe composites reaches 928.3MPa where the composite is reinforced by nickel-coated SiC particles with the particle size of 13μm and volume fraction of 10%. In contrast with that reinforced by uncoated SiC particles, the highest increment of final elongation is 19.6% reinforced by copper-coated SiC particle with the particle size of 13μm and volume fraction of 20%. Electroless plating on SiC particle surface may effectively prevent the direct contact in the interfaces between the SiC particles which can reduce the risk of micro-crack formation, so as to improve the properties of composite.

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Debnath, Sujan, and Abdul Hamid Abdullah. "Mechanical Performance of Cockle Shell Particles (CSP) and Oil Palm Fibre (OPF) Reinforced Epoxy Composite." International Journal of Engineering Materials and Manufacture 2, no. 3 (September 14, 2017): 58–66. http://dx.doi.org/10.26776/ijemm.02.03.2017.03.

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The effects of particle sizes (range 1, 2 and 3) and particle loading (5wt%, 10wt%, 15wt%, 20wt% and 25wt %) on the mechanical properties (tensile and flexural properties), water absorption properties and morphology analysis (optical microscope) of epoxy composites reinforced with cockle shell particles and hybrid epoxy based composite reinforced with cockle shell particles and oil palm fibres were investigated. Pre-chemical treatment of alkaline solution (NaOH) with 5% concentration was used to treat the oil palm fibre prior to the fabrication of composite. Based on the findings, the composite with smaller size and lower loading of cockle shell particle showed higher improvement in mechanical properties. Meanwhile, the hybrid epoxy based composite reinforced with smaller size of cockle shell particle and oil palm fibre showed enhancement in mechanical properties. For water absorption analysis, cockle shell particle-epoxy composites with lower particle loading showed less water uptake.

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Wang, Yanju, Wei Wei, Xiaolei He, Xiang Lan, Aixue Sha, and Wenfeng Hao. "Effects of Strength and Distribution of SiC on the Mechanical Properties of SiCp/Al Composites." Materials 15, no. 4 (February 9, 2022): 1288. http://dx.doi.org/10.3390/ma15041288.

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In this paper, considering the strength and geometric discrete distribution characteristics of composite reinforcement, by introducing the discrete distribution function of reinforcement, the secondary development of ABAQUS is realized by using the Python language, the parametric automatic generation method of representative volume elements of particle-reinforced composites is established, and the tensile properties of silicon carbide particle-reinforced aluminum matrix composites are analyzed. The effects of particle strength, particle volume fraction, and particle random distribution on the mechanical properties of SiCp/Al composites are studied. The results show that the random distribution of particles and the change in particle strength have no obvious influence on the stress–strain relationship before the beginning of material damage, but have a great influence on the damage stage, maximum strength, and corresponding failure strain. With the increase in particle volume fraction, the damage intensity of the model increases, and the random distribution of particles has a great influence on the model with a large particle volume fraction. The results can provide a reference for the design, preparation, and characterization of particle-reinforced metal matrix composites.

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Cho, Young Tae, Duck Young Yoon, and Kwang Hee Im. "Damage Theory for Discontinuously-Reinforced Composites Including Cracked Inhomogeneity." International Journal of Modern Physics B 17, no. 08n09 (April 10, 2003): 1801–7. http://dx.doi.org/10.1142/s0217979203019691.

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In particle or short-fiber reinforced composites, cracking of the reinforcements is a significant damage mode because the cracked reinforcements lose load carrying capacity. This paper deals with an incremental damage theory of particle or short-fiber reinforced composites. The composite undergoing damage process contains intact and broken reinforcements in a matrix. To describe the load carrying capacity of the cracked reinforcement, the average stress of a cracked ellipsoidal inhomogeneity in infinite body, which was proposed in the previous paper is introduced. An incremental constitutive relation of particle or short-fiber reinforced composites including the progressive cracking damage of the reinforcements have been developed based on the Eshelby's equivalent inclusion method and Mori and Tanaka's mean field concept. Influence of the cracking damage on the stress-strain response of the composites is demonstrated.

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Kim, Myoung Gyun, Si Young Sung, and Young Jig Kim. "Synthesis of In-Situ Titanium Carbide Particle Reinforced Titanium Composites." Materials Science Forum 475-479 (January 2005): 963–66. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.963.

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Titanium carbide particle reinforced titanium composites were prepared by in-situ synthesis reaction between titanium and carbon liquid alloys. The phases constitute and microstructures of titanium composite have been investigated by OM, XRD, SEM and EPMA. Although it was possible to synthesize titanium carbide particle reinforced titanium composites, the morphology of in-situ titanium carbide grows into typically dendritic shape due to the compositional supercooling theory. Using computerized image analysis, the average particle size and aspect ratio of in-situ formed titanium carbide is about 28.1 ㎛ and 1.9, respectively.

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Kim, Shae K., Hyung Ho Jo, Gue Serb Cho, Kyong Whoan Lee, and Young Jig Kim. "Cost Effective Particle Reinforced Magnesium Composites." Materials Science Forum 419-422 (March 2003): 635–38. http://dx.doi.org/10.4028/www.scientific.net/msf.419-422.635.

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Mishnaevsky, L., M. Dong, S. Hönle, and S. Schmauder. "Computational mesomechanics of particle-reinforced composites." Computational Materials Science 16, no. 1-4 (December 1999): 133–43. http://dx.doi.org/10.1016/s0927-0256(99)00055-5.

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Dyzia, Maciej. "Fine Particle Reinforced Composites Obtained by Suspension Method." Solid State Phenomena 211 (November 2013): 53–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.211.53.

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In the production of composites by the suspension method (mechanical stirring) may beused, ceramic particles, which are wetted by the liquid metal such SiC, Al2O3or glassy carbon.However, to obtain a stable suspension with the use a particle size below 10 μm is extremelydifficult. Phenomena related i.a. with agglomeration of particles, convection currents over moltenmetal surface make practically impossible to obtain composite material. One possibility to obtainfine reinforced composite is the use of in situ methods, in which the reinforcing phase is formed bythe reaction between the aluminum and the reactive powder oxides such FeO, TiO2, SiO2, NiO, Nb2O5or Fe2O3. Such reactions are exothermic (aluminothermic) and their kinetics dependent onthe dispersion of the reactants, the quantitative phase composition and temperature.The technological solution involving the formation of a suspension with particles (chemically activewith aluminum) is one of the promising solutions to obtain batch material for the synthesis ofcomposites reinforced with Al2O3and intermetallic phases. The aim of this study is to evaluate thesuitability of suspension technology to obtained in situ fine reinforced composite.

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Qiu, Feng, Hao-Tian Tong, Yu-Yang Gao, Qian Zou, Bai-Xin Dong, Qiang Li, Jian-Ge Chu, Fang Chang, Shi-Li Shu, and Qi-Chuan Jiang. "Microstructures and Compressive Properties of Al Matrix Composites Reinforced with Bimodal Hybrid In-Situ Nano-/Micro-Sized TiC Particles." Materials 11, no. 8 (July 25, 2018): 1284. http://dx.doi.org/10.3390/ma11081284.

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Bimodal hybrid in-situ nano-/micro-size TiC/Al composites were prepared with combustion synthesis of Al-Ti-C system and hot press consolidation. Attempt was made to obtain in-situ bimodal-size TiC particle reinforced dense Al matrix composites by using different carbon sources in the reaction process of hot pressing forming. Microstructure showed that the obtained composites exhibited reasonable bimodal-sized TiC distribution in the matrix and low porosity. With the increasing of the carbon nano tube (CNT) content from 0 to 100 wt. %, the average size of the TiC particles decreases and the compressive strength of the composite increase; while the fracture strain increases first and then decreases. The compressive properties of the bimodal-sized TiC/Al composites, especially the bimodal-sized composite synthesized by Al-Ti-C with 50 wt. % CNTs as carbon source, were improved compared with the composites reinforced with single sized TiC. The strengthening mechanism of the in-situ bimodal-sized particle reinforced aluminum matrix composites was revealed.

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Dai, Feng Ze, Xiao Jing Xu, J. Z. Lu, Y. K. Zhang, and Lan Cai. "Friction Behaviors of SiC Particle-Reinforced Cu Matrix Composites." Key Engineering Materials 464 (January 2011): 492–95. http://dx.doi.org/10.4028/www.scientific.net/kem.464.492.

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SiC particle reinforced Cu composite was fabricated by powder metallurgy and hot extrusion process. The friction behaviour of pure Cu, braze and composites was studied on a block-on-ring test. The blocks were slid against 40Cr steel rings under the lubrication of 232# machinery oil. It shows that the wear rate of pure Cu is about then times of the 5 vol.% Cu composite at a normal load of 300 N. The satisfied wear resistance prove the SiC is a promising reinforcement material for Cu matrix composite. However, the 20 vol.% SiC did not exhibit prospected wear resistance. The discussion of this phenomenon was conducted.

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Arul Kumar, B., and G. Kumaresan. "Abrasive Water Jet Machining of Aluminum-Silicon Carbide Particulate Metal Matrix Composites." Materials Science Forum 830-831 (September 2015): 83–86. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.83.

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Particle Reinforced Metal Matrix Composites (PRMMC's) have proved to be extremely difficult to machine using conventional manufacturing processes due to heavy tool wear caused by the presence of the hard reinforcement. This paper presents details and results of an investigation into the machinability of SiC particle reinforced aluminium matrix composites using Abrasive Water Jet Machining (AWJM). Al-SiC MMC specimens, prepared with stir casting method. The surface roughness of the composite material for these different compositions are examined and compared. The influence of the ceramic particle reinforcement on the machining process was analyzed.

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Ni, Zeng Lei, Ai Qin Wang, and Jing Pei Xie. "Effects of Particle Size and Distribution on the Microstructure and Mechanical Properties of SiC Reinforced Al-30Si Alloy Composite." Applied Mechanics and Materials 271-272 (December 2012): 12–16. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.12.

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This paper studied the combined effects of particle size and distribution on the mechanical properties of the SiC particle reinforced Al-30Si alloy composites. The microstructure of experimental material was analyzed by SEM, the tensile strength and physical properties were examined. The results show that, with the increase of the SiC particle size in the composites, the clustering degree of the SiC particles decreases in the matrix, the SiC particles distribute more ununiformly. The tensile strength is influenced by the SiC particle size, the tensile strength of the composite reinforced by 13μm sized SiC particles is the highest.

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Patnaik, Amar, Ritesh Kaundal, Alok Satapathy, Sandhyarani Biswas, and Pradeep Kumar. "Solid Particle Erosion of Particulate Filled Short Glass Fiber Reinforced Polyester Resin Composites." Advanced Materials Research 123-125 (August 2010): 213–16. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.213.

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Fiber reinforced composite materials have been used in main parts of structures; an accurate evaluation of their erosion behavior becomes very important. In this study, short glass fibre reinforced polyester based isotropic polymer composites are fabricated with five different fibre weight-fractions. The effect of various operational variables, material parameters and their interactive influences on erosive wear behavior of these composites has been studied systematically. After systematic analysis of solid particle erosion for all the five composites, 30wt% short glass fiber reinforced polyester based composite shows better erosion resistance. In order to improve the erosion resistance further ceramic silicon carbide particle is reinforced with the 30wt% glass-polyester based hybrid composites. A ﬁnite element (FE) model (LS-DYNA) of erosive wear is established for damage assessment and validated by a well designed set of experiments. For this, the design of experiments approach using Taguchi’s orthogonal arrays design is used. It is recognized that there is a good agreement between the computational and experimental results, and that the proposed simulation method is very useful for the evaluation of damage mechanisms.

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Cavdar, Kadir, and Mahmut Bingol. "Investigation of Mechanical Properties of Basalt Particle-Filled SMC Composites." International Journal of Polymer Science 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/1231606.

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Basalt particles have been investigated as a novel additive for the production of glass fibre reinforced composite using sheet moulding compound (SMC) method. Compared to the CaCO3that are widely used as filler in the SMC composite, the resulting composites exhibit improved mechanical properties. The tensile strength increased by approximately 15%, whereas the flexural strength was enhanced by 8% in SMC composites prepared by basalt particles. Examination of the surface morphology and interfacial debonding of the specimens is also performed via scanning electron microscopy. Superior strength properties are observed in the basalt particle-reinforced composites compared to those with the CaCO3fillers.

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Li, Zu Lai, Ye Hua Jiang, Ru Qing Huang, Rong Zhou, Hao Yang, and Quan Shan. "Microstructure and Interface of TiC In Situ Synthesized Reinforced Steel-Based Surface Composite Prepared by V-EPC Infiltrating Method." Applied Mechanics and Materials 291-294 (February 2013): 2680–87. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.2680.

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In order to optimize the processing parameters of TiC/steel composite materials, in-situ TiC particle reinforced steel-based surface composites were prepared by vacuum evaporative pattern casting (V-EPC) infiltration process, and the structure and interface of the composites were investigated. The results show that, TiC particle size with Ti-C-20wt%Fe reaction system was much smaller than the composite with Ti-C reaction system in the same location of the composites. In the composites, the TiC particle size and volume fraction increased and spherical degree dropped from the tradition layers (interface between the substrate and the composite layer) to the outer surface. But the increase of TiC particle size (1-3μm) and volume fractions (25.8%-43.5%) in the composite with Ti-C-20wt%Fe reaction system was obviously lower than that of TiC particle size (1-10μm) and volume fractions (12.3%- 67.7%) in the composite with Ti-C reaction system. The bond zone between TiC particles and the matrices was totally metallurgical bonding without apparent interface. Comparing with the composite with Ti-C-xFe reaction system, the tradition layer with Ti-C reaction system has a poorer internal quality. The forming process of TiC in situ synthesized reinforced steel substrate surface composites prepared by V-EPC infiltrating process was infiltrating of the melting and carbothermal reactions of C and Ti powder the result of joint action.

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Ding, K., and G. J. Weng. "Plasticity of Particle-Reinforced Composites With a Ductile Interphase." Journal of Applied Mechanics 65, no. 3 (September 1, 1998): 596–604. http://dx.doi.org/10.1115/1.2789100.

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A homogenization theory is developed to determine the overall elastoplastic behavior of a particle-reinforced composite with a ductile interphase. Unlike most existing homogenization theories which are primarily concerned with the ordinary two-phase composites, the present one is confronted with two ductile phases, with one enclosing the other. The theory is developed with the aid of a linear comparison composite using a field-fluctuation method to calculate an energy-based effective stress of the ductile phases. In order to examine its accuracy, an exact elastic-plastic analysis under dilatational loading is also developed, and it was found that, despite its simplicity, the theory could provide plausible estimates for the overall behavior of the three-phase composite. The theory is applicable to a composite system regardless whether the interphase is more ductile or stiffer than the matrix, and when the interphase is more ductile, it is shown that even the presence of a thin layer can have a very significant effect on the plasticity of the overall composite.

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Qiu, Y. P., and G. J. Weng. "Elastic Moduli of Thickly Coated Particle and Fiber-Reinforced Composites." Journal of Applied Mechanics 58, no. 2 (June 1, 1991): 388–98. http://dx.doi.org/10.1115/1.2897198.

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Based on the models of Hashin (1962) and Hashin and Rosen (1964), the effective elastic moduli of thickly coated particle and fiber-reinforced composites are derived. The microgeometry of the composite is that of a progressively filled composite sphere or cylinder element model. The exact solutions of the effective bulk modulus κ of the particle-reinforced composite and those of the plain-strain bulk modulus κ23, axial shear modulus μ12, longitudinal Young’s modulus E11, major Poisson ratio ν12, of the fiber-reinforced one are derived by the replacement method. The bounds for the effective shear modulus μ and the effective transverse shear modulus μ23 of these two kinds of composite, respectively, are solved with the aid of Christensen and Lo’s (1979) formulations. By considering the six possible geometrical arrangements of the three constituent phases, the values of κ, and of κ23, μ12, E11, and ν12 are found to always lie within the Hashin-Shtrikman (1963) bounds, and the Hashin (1965), Hill (1964), and Walpole (1969) bounds, respectively, but unlike the two-phase composites, none coincides with their bounds. The bounds of μ and μ23 derived here are consistently tighter than their bounds but, as for the two-phase composites, one of the bounds sometimes may fall slightly below or above theirs and therefore it is suggested that these two sets of bounds be used in combination, always choosing the higher for the lower bound and the lower for the upper one.

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Singla, Yogesh K., Rahul Chhibber, Avdesh, Shweta Goyal, and Vipin Sharma. "Influence of single and dual particle reinforcements on the corrosion behavior of aluminum alloy based composites." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 232, no. 6 (March 15, 2016): 520–32. http://dx.doi.org/10.1177/1464420716638111.

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This article presents the results of a study on the corrosion characteristics of the single and dual particle reinforced aluminum alloy 6063 based composites. The reinforcements of silicon carbide and zircon sand were utilized to fabricate the composites by stir casting technique. The influence of reinforcement and their weight percentage on the hardness variations was investigated. The electrochemical tests in sodium chloride solution were conducted to study the corrosion performance of reinforced composites and base alloy. From the corrosion analysis, it was observed that the single particle reinforcement offered better solution on enhancing the corrosion resistance of base aluminum alloy in comparison with dual particle reinforced composites. In the single particle reinforced composites, addition of zircon sand exhibited increased corrosion resistance, when compared to silicon carbide reinforced composites. The governing mechanism behind increased corrosion resistance was found to be the absence of galvanic coupling between the elemental compounds and the corrosive media at particle–matrix interface. The scanning electron microscopy of composites was performed to analyze corrosion mechanism and correlated well with the corrosion behavior.

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Yılmaz Atay, Hüsnügül, and Erdal Çelik. "Electrical Behaviors of Flame Retardant Huntite and Hydromagnesite Reinforced Polymer Composites." ISRN Polymer Science 2012 (October 15, 2012): 1–9. http://dx.doi.org/10.5402/2012/359034.

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In our previous work, we studied the physical characteristics (particle size, surface treatment, etc.) of huntite/hydromagnesite mineral in order to be employed as a flame retardant filler. With this respect, electrical properties of the mineral reinforced polymeric composites were investigated in this study. After grinding of huntite/hydromagnesite mineral to the particle size of 10 μm, 1 μm, and 0.1 μm, phase and microstructural analyses were undertaken using X-ray diffraction (XRD) and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). The ground minerals with different particle size and content levels were subsequently added to ethylene vinyl acetate copolymer (EVA) to produce composite materials. After fabrication of huntite/hydromagnesite reinforced plastic composite samples, they were characterized by using Fourier transform infrared (FTIR) and SEM-EDS. Electrical properties were measured as a main objective of this paper with Alpha-N high resolution dielectric analyzer as a function of particle size and loading level. Dielectric constant, dissipation factor, specific resistance, and conductivity of the composite materials were measured as a function of frequency. On the other hand, conductivity of Ag-coated and uncoated polymeric composite materials was measured. It was concluded that the electrical properties of plastic composites were improved with reducing the mineral particle size.

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Wang, Yong, Kai Ming Cheng, Ji Xue Zhou, Wei Hong Li, and Jin Huan Xia. "Microstructure and Mechanical Properties of AlN Particle Reinforced Mg-Al Matrix Composites with Different Particle Contents." Materials Science Forum 913 (February 2018): 522–28. http://dx.doi.org/10.4028/www.scientific.net/msf.913.522.

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In this paper, magnesium matrix composite with different AlN particles content were fabricated by powder metallurgy. The microstructure of composites was investigated by scanning electron microscopy (SEM) equipped with energy dispersive spectrometer (EDS) and transmission electron microscopy (TEM). The mechanical properties of composites were measured by electronic universal testing machine. The results show that the best densification and the highest mechanical properties of composites reached when the addition of 6wt.% reinforcement at 620 °C for 1 hour. Additionally, the compressive strength and bending strength of composites were 217.06 MPa and 207.40 MPa respectively, increased by 79.2% and 91.12% compared with matrix alloy, and the reinforcement particles uniformly distributed in the matrix alloy. It may be concluded that the strengthening mechanism of composites is mainly attributed to grain refinement, load transfer, and dislocation strengthening.

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Kim, Myoung Gyun, and Young Jig Kim. "Titanium Carbide Particulate Reinforced Titanium Based Composite by In Situ Process." Materials Science Forum 539-543 (March 2007): 1010–15. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.1010.

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Titanium carbide particle reinforced titanium composites were prepared by in-situ synthesis reaction between titanium and carbon liquid alloys. The phases constitute and microstructures of titanium composite have been investigated by OM, XRD, SEM, EPMA and TEM. Although it was possible to synthesize titanium carbide particle reinforced titanium composites, the morphology of in-situ titanium carbide grows into typically dendritic shape due to the compositional supercooling theory. The observation of TEM also show that interfaces between the reinforcements and the titanium matrix alloy are very clean.

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Cao, Dong Feng, Li Sheng Liu, Hai Mei, and Qing Jie Zhang. "The Sensitivity of Strain Rate and Size Effect with Different Particle Volume Fraction in SiCp/Al Composite." Materials Science Forum 631-632 (October 2009): 513–18. http://dx.doi.org/10.4028/www.scientific.net/msf.631-632.513.

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In this paper the sensitivity of strain rate and size effect with different particle volume fraction in SiCp/Al Composite were studied through the experiment. Specimens with 40% and 30% SiC particle volume fraction were made. There are three types of particle sizes in each volume fraction. The sensitivity of strain rate and the effect of particle size in Al matrix composites reinforced with the different volume fraction were investigated, using the split Hopkinson pressure bar and Instron5882 universal material testing machine. The surface microstructure of the specimens in each composite was examined using optical microscopy and SEM. Through the strain-stress curves, the sensitivity of strain rate can be obtained. The experimental results show that the sensitivity of strain rate increases with the increasing of particle volume fraction. At the same volume fraction, the size effect were observed obviously and higher flow stresses were obtained in the composites reinforced with small particles than that in the composite with large particles.

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Ficici, Ferit. "Evaluation of surface roughness in drilling particle-reinforced composites." Advanced Composites Letters 29 (January 1, 2020): 2633366X2093771. http://dx.doi.org/10.1177/2633366x20937711.

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Aluminum matrix composite materials being used in different sectors including automobile, aerospace, defense, and medical and are currently displacing unreinforced materials with their superior mechanical properties. The metal removal process of drilling is widely used in many structural applications. This study experimentally investigates the drilling characteristics of silicon carbide (SiCp)-reinforced Al 7075 composites produced by stir casting method. Also, two different drill materials with high-speed steel (HSS) and titanium nitride (TiN)-coated HSS carry out in drilling operation. The effect of operational parameters such as cutting speed and feed rate and materials parameters such as weight fraction of reinforcement and cutting tools on the surface roughness of drilled holes were evaluated in the drilling operations. The results of the drilling test indicate that the feed rate and cutting speed have a very strong effect on the surface roughness of matrix alloy and composite materials. The surface roughness ( Ra) values increased with increasing the feed rate and decreased with increasing the cutting speed. Under 0.10 mm/rev and 20 m/min drilling conditions and using HSS drill, surface roughness values for matrix, 5% SiC-, 10% SiC-, and 15% SiC-reinforced composites, were obtained 2.57, 2.59, 2.61, and 2.64 µm, respectively; besides, using TiN-coated HSS drill, surface roughness values were obtained 1.60, 1.63, 1.64, and 1.66 µm, respectively. An increase in the weight fraction of the abrasive SiC particle resulted in a very crucial deterioration quality of the drilled hole. TiN-coated HSS drills better performance exhibits than uncoated HSS drills for all the drilling operations about surface roughness properties. Short chip formations observed both the matrix alloy and the composite materials for two different drills in the drilling operations.

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Jayakumar, K., Jose Mathew, M. A. Joseph, R. Suresh Kumar, and P. Chakravarthy. "Processing and End Milling Behavioural Study of A356-SiC_p Composite." Materials Science Forum 710 (January 2012): 338–43. http://dx.doi.org/10.4028/www.scientific.net/msf.710.338.

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Machining process such as milling receives less attention in the study of machinability of composites due to its interrupted cutting and the complexity of the process. In the present study, A356 aluminium alloy powder reinforced with 10 volume % SiC particles of various sizes (1,12.5 and 25 µm) were synthesized by vacuum hot pressing method and the effect of particle size on the composites were analysed for its mechanical properties and machinability. End milling of these composites were carried out and the surface roughness and resultant cutting force were analysed with the change of machining parameters and varying SiC particle sizes. The minimum cutting force and surface roughness were obtained for a finer particle (1 µm) reinforced composite with higher cutting speed, low feed and depth of cut.

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Yang, Zhiyu, Jianzhong Fan, Yanqiang Liu, Junhui Nie, Ziyue Yang, and Yonglin Kang. "Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites." Materials 14, no. 3 (February 1, 2021): 675. http://dx.doi.org/10.3390/ma14030675.

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Roles of the particle, strengthening, and weakening during deformation of the particle reinforced metal matrix composite, were studied using in situ technique. Composites with three different strengths Al-Cu-Mg alloy matrices reinforced by three sizes SiC particles were manufactured and subjected to in situ tensile testing. Based on in situ observation, damage process, fraction and size distribution of the cracked particles were collected to investigate the behavior of the particle during composite deformation. The presence of the particle strengthens the composite, while the particle cracking under high load weakens the composite. This strengthening to weakening transformation is controlled by the damage process of the particle and decided by the particle strength, size distribution, and the matrix flow behavior together. With a proper match of the particle and matrix, an effective strengthening can be obtained. Finally, the effective match range of the particle and the matrix was defined as a function of the particle size and the matrix strength.

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Zhou, Yang, Hong Xiang Zhai, Zhen Ying Huang, Ming Xing Ai, Zhi Li Zhang, Shi Bo Li, and Cui Wei Li. "Influence of Toughening Method on Microstructures and Mechanical Properties of Alumina-Matrix Composites." Materials Science Forum 475-479 (January 2005): 909–12. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.909.

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Various toughening methods, i.e. partially stabilized zirconia transformation toughening, transformation- SiC whisker reinforcing and transformation-SiC particle reinforcing were used to improve the mechanical properties of alumina ceramic. Influence of various toughening methods on microstructure and mechanical properties of the alumina-matrix composites were studied. On the basis of transformation toughening, by which the strength and toughness of Al2O3 ceramic improved simultaneously, the addition of SiC whisker substantially enhanced the toughness, whereas the addition of SiC particle increased both toughness and strength to a certain degree. Mechanical properties of the testing materials were closely related with their morphologies of fracture surfaces. Toughening mechanisms of the composites were also studied. In the transformation-whisker reinforced composite or the transformation-particle reinforced composite, the two toughening methods affected with each other and produced a cooperative toughening effect.

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Gao, Tong, Zengqiang Li, Kaiqi Hu, Yihan Bian, and Xiangfa Liu. "Assessment of AlN/Mg–8Al Composites Reinforced with In Situ and/or Ex Situ AlN Particles." Materials 14, no. 1 (December 24, 2020): 52. http://dx.doi.org/10.3390/ma14010052.

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In this paper, 8.2AlN/Mg–8Al composites reinforced with in situ and/or ex situ AlN particles have been synthesized. The in situ-formed AlN particles are nano-sized, performing as particle chains. It has been clarified that the in situ AlN particles are more efficient than ex situ particles for the enhancement of mechanical properties. The in situ-prepared composite exhibits improved density, hardness and compressive strength compared to the ex situ ones. This work may be referred to for designing particle-reinforced Mg composites by various methods.

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Rana, Shohel, Mahbub Hasan, Md Rezaul Karim Sheikh, and A. Nayeem Faruqui. "Effects of aluminum and silicon carbide on morphological and mechanical properties of epoxy hybrid composites." Polymers and Polymer Composites 30 (January 2022): 096739112110689. http://dx.doi.org/10.1177/09673911211068918.

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The present research focuses on the effects of aluminum (Al) and silicon carbide (SiC) hybridization on mechanical and morphological properties of Al and SiC particles reinforced hybrid epoxy composites. Composites were prepared by hand lay-up technique at five levels of reinforcement loading (10, 20, 30, 40, and 50 wt%). Aluminum powder and silicon carbide particles were utilized as reinforcement at a ratio of (1:1) during composite preparation. Microstructural analysis using a scanning electronic microscope and optical microscope was performed to observe the adhesiveness between the matrix and reinforcement. For mechanical characterization, tensile, flexural, impact, and hardness tests were performed. Tensile and flexural strength decreased, while Young’s modulus, flexural modulus, impact strength, and hardness increased with increase in aluminum and silicon carbide particle loading. Based on the particle loading, 50 wt% of particle-reinforced composite had the best set of mechanical properties among all prepared composites.

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Kandas, Halis, and Okan Ozdemir. "Investigation of glass/epoxy laminate composites reinforced with bio-particles under mechanical loading." Materials Testing 65, no. 3 (March 1, 2023): 444–52. http://dx.doi.org/10.1515/mt-2022-0289.

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Abstract In this paper, the effects of particle reinforcement on the tensile, compression and flexural properties, as well as the influence of cross head speed on the quasi-static punch shear properties of glass/epoxy composites are investigated. Laminated composites, which are manufactured by hand lay-up method consist of six layers of stitched glass fibers. As the particle reinforcement materials, pinecone and acorn powders with 1, 2, 3, 4 and 5 wt% ratios are used for the manufacturing of composites. The quasi-static punch shear behaviour of composites is elucidated at a room temperature through the force – deformation curves and the energy graphs at different test speeds (i.e., 1, 10 and 20 mm min−1). According to the experimental findings of quasi-static punch shear tests, it is concluded that the maximum contact force of each composite increases along with the punch shear test speed. Compressive strength of the acorn reinforced specimens shows their highest compressive value at the particle amount of 5 wt%, while pinecone-reinforced composites exhibit their highest compressive strength at the particle ratio of 2 wt%.

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Tohgo, Keiichiro, and G. J. Weng. "A Progressive Damage Mechanics in Particle-Reinforced Metal-Matrix Composites Under High Triaxial Tension." Journal of Engineering Materials and Technology 116, no. 3 (July 1, 1994): 414–20. http://dx.doi.org/10.1115/1.2904307.

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The energy approach recently proposed by Qiu and Weng (1992) is introduced to estimate the equivalent stress of the ductile matrix in Tohgo and Chou’s (1991) incremental damage theory for particulate-reinforced composites containing hard particles. In such a composite debonding of the particle-matrix interface is a significant damage process, as the damaged particles have a weakening effect while the intact particles have a reinforcing effect. In Tohgo-Chou’s theory, which describes the elastic-plastic behavior and the damage behavior of particulate-reinforced composites, it was assumed that the debonding damage is controlled by the stress of the particle and the statistical behavior of the particle-matrix interfacial strength, and that the debonded (damaged) particles are regarded as voids, resulting in an increased void concentration with deformation. On the other hand, Qiu-Weng’s energy approach provides a reasonable equivalent stress of the matrix in the porous material and particulate-reinforced composite even under a high triaxiality. The incremental damage theory developed here enables one to calculate the overall stress-strain response and damage evolution of the composite under high triaxial tension. The stress-strain relations for porous material obtained by the present incremental theory are completely consistent with that obtained by Qiu and Weng. The influence of the debonding damage on the stress-strain response is demonstrated for particulate-reinforced composites.

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Lloyd, D. J. "Particle reinforced aluminium and magnesium matrix composites." International Materials Reviews 39, no. 1 (January 1994): 1–23. http://dx.doi.org/10.1179/imr.1994.39.1.1.

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35

Cholewa, Mirosław, Józef Gawroński, and Zenon Ignaszak. "Technological aspects of particle-reinforced composites production." Materials & Design 18, no. 4-6 (December 1997): 401–5. http://dx.doi.org/10.1016/s0261-3069(97)00090-3.

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Hanumanth, G. S., and G. A. Irons. "Solidification of particle-reinforced metal-matrix composites." Metallurgical and Materials Transactions B 27, no. 4 (August 1996): 663–71. http://dx.doi.org/10.1007/bf02915665.

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Sahin, A. E., and T. Sinmazcelik. "Olivine Particle Reinforced Polyphenylene Sulfide Matrix Composites." Acta Physica Polonica A 131, no. 3 (March 2017): 481–84. http://dx.doi.org/10.12693/aphyspola.131.481.

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Khurshudyan, As Zh. "A mesoscopic model for particle-reinforced composites." Continuum Mechanics and Thermodynamics 32, no. 4 (July 18, 2019): 1057–71. http://dx.doi.org/10.1007/s00161-019-00810-1.

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Kuan, Hoo Tien Nicholas, Ming Yee Tan, Yiou Shen, and Mohd Yazid Yahya. "Mechanical properties of particulate organic natural filler-reinforced polymer composite: A review." Composites and Advanced Materials 30 (January 1, 2021): 263498332110075. http://dx.doi.org/10.1177/26349833211007502.

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Considering the cost in utilization of organic natural filler as an alternative to manmade fiber and mineral inorganic filler-reinforced polymer composite is of great interest. The main reasons for using natural fillers are to reduce the dependence on petroleum-based, nonrenewable resources and are also a smarter use of environment and financial resources. Only limited research works have been done on the mechanical properties, such as tensile, flexural, and impact on particulate organic natural filler-reinforced polymer composite. The effect of particle size, particle loading, and chemical treatment on mechanical properties of organic natural filler-reinforced polymer composites is reviewed and discussed. The results show that a smaller particle size with an aspect ratio higher than its critical value provided better mechanical properties. With the assumption of good adhesion between the particle filler and matrix, mechanical properties increased with volume fraction until it reached its optimum condition or failure. Effective chemical treatments would improve the homogeneity and adhesion of the filler/matrix, thus enhancing the mechanical properties of the composites.

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Misnon, Mohd Iqbal, Shahril Anuar Bahari, Mohd Rozi Ahmad, Wan Yunus Wan Ahmad, Jamil Salleh, and Muhammad Ismail Ab Kadir. "The Properties of Agricultural Waste Particle Composite Reinforced with Woven Cotton Fabric." Scientific Research Journal 7, no. 2 (December 31, 2010): 19. http://dx.doi.org/10.24191/srj.v7i2.9417.

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The production of particle composites using agricultural waste materials is an area of significant research interest. in general the properties of agricultural waste particle composites are considered to be inferior to those of commercial particleboards. In this study, the inclusion of woven cotton fabric has been used to overcome this drawback. Particle composites were manufactures from coconut shell- and rubberwood-particles using urea formaldehyde as a binder and combined with woven cotton fabric to reinforce the material. The fabricated agricultural waste particle composites were then evaluated with respect to the effect of the number of fabric layers in the composite structure and the inherent effect on the mechanical (flexural and impact strength) and physical (water absorption and thickness swelling) properties. Agricultural waste particle composites without any reinforcement were used as control samples in this study. The test results indicate that the flexural and impact properties of particle composites reinforced with woven cotton fabric are better than those for the control samples. It was also determined that both the mechanical and physical properties improve with increasing fabric layers, except with respect to thickness swelling.

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Şahin, Yusuf. "Wear Behavior of Al-Al₂O₃ Reinforced Composites." Advanced Materials Research 308-310 (August 2011): 1577–81. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.1577.

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Aluminum composites containing 10wt. % of Al2O3 with 3 µm size of particles have been produced using powder metallurgy (PM) method and wear behavior of the composites were tested under dry condition. A comparison is also made with SiCp reinforced Al composite produced at the same conditions. The wear rate of both types’ composites increased with all applied loads, but wear rate of the composites was a strong function of normal load rather than that of type of particles used for the manufacturing MMCs. Furthermore, the wear rate of Al-Al2O3 composite was smaller than that of Al-SiCp reinforced composite, but not indicating significant differences on it. Moreover, SEM examination showed that plastic deformation was the dominant type of wear for the Al2O3 particle reinforced MMCs, but the fragmented-deformed layer of particles was more effective for the SiCp reinforced MMCs due to more fracturing of particles.

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Vinayagamoorthy, R. "Effect of particle sizes on the mechanical behaviour of limestone-reinforced hybrid plastics." Polymers and Polymer Composites 28, no. 6 (November 4, 2019): 410–20. http://dx.doi.org/10.1177/0967391119883163.

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The present research has been made to investigate the characteristics of a new composite material made up of limestone as particle reinforcement. New composites are made by taking limestone particles in five different sizes and jute as woven reinforcement in polypropylene matrix. Mechanical characteristics of the composites that include strengths against tension, compression, flexural, impact and hardness are evaluated and a comparative investigation is made among the composites. The effect of particle size on the properties is analysed and found that the composite with medium particle size bears the highest strength in all aspects. In addition, microscopic image analysis is carried out to investigate the distribution of particles, bonding capacity and other morphologies. The results showed that limestone will be apt particle reinforcement and its presence enhances all the characteristics of the composite.

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Kim, Woo-Jin, Dong-Wha Kum, and Ha-Guk Jeong. "Interface structure and solute segregation behavior in SiC/2124 and SiC/6061 Al composites exhibiting high-strain-rate superplasticity." Journal of Materials Research 16, no. 8 (August 2001): 2429–35. http://dx.doi.org/10.1557/jmr.2001.0333.

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Interface structure and solute-segregation behavior in the high-strain-rate superplastic SiCp/2124 and SiCp/6061 Al composites were investigated. Evidence for interfacial reaction between reinforcement and Al matrix, which was evident in the superplastic Si3N4p,w/2124 Al and Si3N4p,w/6061 Al composites, could not be detected in the current SiC-reinforced Al composites. Instead, strong solute segregation was observed at SiC/Al interfaces. Extensive formation of whiskerlike fibers was observed at the fractured surface of tensile samples above the critical temperature where particle weakening began to be seen. These results suggest that partial melting occurs at the solute-enriched region near SiC interfaces and is responsible for the particle weakening. The absence of reaction phase in the SiC-reinforced composite may explain why no endothermic peak for partial melting appears in its differential scanning calorimetry curve and why its optimum temperature for superplasticity is generally higher than that of the Si3N4-reinforced composite.

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Martijanti, Martijanti, Sutarno Sutarno, and Ariadne L. Juwono. "Polymer Composite Fabrication Reinforced with Bamboo Fiber for Particle Board Product Raw Material Application." Polymers 13, no. 24 (December 14, 2021): 4377. http://dx.doi.org/10.3390/polym13244377.

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Bamboo particles as reinforcement in composite materials are prospective to be applied to particleboard products in the industry. This study aimed to synthesize bamboo particle reinforced polymer composites as a substitute for particleboard products, which still use wood as a raw material. The parameters of the composite synthesis process were varied with powder sizes of 50, 100, and 250 mesh, each mesh with volume fractions of 10, 20, and 30%, matrix types of polyester and polypropylene, Tali Bamboo, and Haur Hejo Bamboo as reinforcements. Characterization included tensile strength, flexural strength, and morphology. Particleboard products were tested based on JIS A 5908-2003, including density testing, moisture content, thickness expansion after immersion in water, flexural strength in dry and wet conditions, bending Young’s modulus, and wood screw holding power. The results showed that the maximum flexural and tensile strength values of 91.03 MPa and 30.85 MPa, respectively, were found in polymer composites reinforced with Tali bamboo with the particle size of 250 mesh and volume fraction 30%. Particleboard made of polypropylene and polyester reinforced Tali Bamboo with a particle size of 250 mesh and a volume fraction of 30% composites meets the JIS A 5908-2003 standard.

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Mohan, N., S. Natarajan, S. P. Kumaresh Babu, Siddaramaiah, and Joong Hee Lee. "Solid Particle Erosion of UHMWPE Filled Aramid Fabric-Epoxy Hybrid Composites." Advanced Materials Research 123-125 (August 2010): 1051–54. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.1051.

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The effect of ultrahigh molecular weight polyethylene (UHMWPE) on solid particle erosion behaviour of aramid fabric reinforced-epoxy (A-E) hybrid composites was investigated. The aramid fabric reinforced-epoxy hybrid composites have been fabricated with and with out UHMWPE filler. The solid particle erosive wear was evaluated at different impingement angles from 300 to 90 0 at constant velocity and at constant standoff distance .The silica sand of size 30 -50 and 60 -80 μm was used as erodent. The results show erosive rate of UHMWPE filled aramid- epoxy composite shows lowest value. The presence of UHMWPE in epoxy matrix gives good bonding between filler and matrix. The morphologies of eroded surface were examined by the SEM in order to establish the erosion mechanism of the composites.

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Liu, Xi Qiang, Pei Jun Wei, Li Wang, and Gui Zhang. "Dynamic Effective Properties of Particle-Reinforced Composites with Imperfect Interface." Advanced Materials Research 194-196 (February 2011): 1793–802. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1793.

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Elastic wave scattering of single spherical particle and the multiple scattering in particle-reinforced composite with imperfect interfaces are studied by the use of wave function expansion method. Four typical interfaces are obtained by appropriate selection of spring constants in the classical spring interface model, i.e. perfect interface, slide interface, rough interface and unbonded interface. The jump and continuous conditions of displacement vector and traction vector are used to derive the equation which the unknown expansion coefficients of the scattered wave field satisfy. Furthermore, the multiple scattering in composite reinforced by random distributed spherical particles is investigated. The effective velocity and attenuation of coherent waves and the dynamic effective moduli of composites are evaluated. The numerical simulation is performed for the SiC-Al composite. The influences of interface parameters on the scattering cross section, the effective velocity, the effective attenuation and the effective elastic moduli are discussed.

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Pruncu, Catalin Iulian, Alina Vladescu, N. Rajesh Jesudoss Hynes, and Ramakrishnan Sankaranarayanan. "Surface Investigation of Physella Acuta Snail Shell Particle Reinforced Aluminium Matrix Composites." Coatings 12, no. 6 (June 8, 2022): 794. http://dx.doi.org/10.3390/coatings12060794.

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Aluminium-matrix composite is one of the most preferred engineering materials and is known for its potential benefits, such as lightweight nature, high specific stiffness, superior strength, machinability, etc. The metal–matrix composites are very attractive for critical applications: Aerospace field, defense deployments, automotive sector, marine industry. In the present work, novel Physella Acuta Snail Shell particle reinforced aluminium metal–matrix composites are developed to facilitate cost-effective and sustainable manufacturing. These green composites are developed by stir-casting with LM0 as matrix material and snail shell as reinforcement with a distinct percentage (by weight) of inclusion. The influence of snail shells is analyzed through tribological, morphological, and corrosion studies. Aluminium–matrix composite Al98SNS2 with 98% (by weight) aluminium matrix and 2% (by weight) snail shell reinforcement exhibits superior performance in all investigations. Al98SNS2 composite exhibits the least wear rate in the atmosphere of deionized water and 3.5% NaCl. Corrosion deteriorates the surface roughness irrespective of the percentage of incorporation of snail shell reinforcement. However, the deterioration is minimal in Al98SNS2. The current research findings indicate that the incorporation of snail shell in aluminum metal–matrix composites promotes cost-effective, sustainable, and eco-friendly manufacturing.

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Tian, Xiangrong, Aiqin Zhu, Jishan Wei, and Ranyang Han. "Preparation and Forming Technology of Particle Reinforced Aluminum Matrix Composites." Insight - Material Science 1, no. 1 (August 9, 2018): 28. http://dx.doi.org/10.18282/ims.v1i1.105.

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<p>This paper introduces the performance and preparation technology and forming technology of particle reinforced aluminum matrix composites. The application status of particle reinforced aluminum matrix composites is illustrated, and its development prospect is pointed out. </p>

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Sun, Weiqiang, Guang Hu, Hu Xu, Yanfei Li, Chao Wang, Tingxuan Men, Fu Ji, et al. "Study on the Influence of Reinforced Particles Spatial Arrangement on the Neutron Shielding Performance of the Composites." Materials 15, no. 12 (June 16, 2022): 4266. http://dx.doi.org/10.3390/ma15124266.

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Particle-reinforced composites are widely applied as nuclear radiation shielding materials for their excellent comprehensive properties. The work aimed to calculate the influence of the functional reinforced particles spatial arrangement on the neutron shielding performance of composites and attempted to explain the influence mechanism by investigating the neutron flux distribution in the materials. Firstly, four suitable physical models were established based on the Monte Carlo Particle Transport Program (MCNP) and mathematical software MATLAB, namely the RSA (Random Sequential Adsorption) Model with particles random arrangement and FCC Model, BCC Model and Staggered Arrangement Model (SA Model) with particle periodic arrangements. Later, based on these four physical models, the neutron transmittance of two kinds of typical B4C reinforced composites, 316 stainless steel matrix composite and polyethylene matrix composite, were calculated under different energy neutrons sources (0.0253 eV, 50 eV, 50 keV, fission spectrum, 241Am-Be spectrum and 14.1 MeV) and the neutron flux distribution in the 316 stainless steel composite was also analyzed under 0.0253 eV neutron and fission neutron sources. The results indicated that the spatial arrangement of B4C has an impact on the neutrons shielding performance of the composite and the influence changes with neutron energy and B4C content. It can be concluded that the RSA model and the periodic arrangement models can be used in different calculation cases in the future.

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Misnon, Mohd Iqbal, Shahril Anuar Bahari, Mohd Rozi Ahmad, Wan Yunus Wan Ahmad, Jamil Salleh, and Muhammad Ismail Ab Kadir. "The Properties of Agricultural Waste Particle Composite Reinforced with Woven Cotton Fabric." Scientific Research Journal 7, no. 2 (December 31, 2010): 19. http://dx.doi.org/10.24191/srj.v7i2.5021.

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The production ofparticle composites using agricultural waste materials is an area ofsignificant research interest. 1ngeneral the properties ofagricultural waste particle composites are considered to be inferior to those ofcommercial particleboards. In this study, the inclusion of woven colton fabric has been used to overcome this drawback. Particle composites were manufacturesfrom coconut shell- and rubberwood-particles using urea formaldehyde as a binder andcombinedwith woven cotton fabric to reinforce the material. Thefabricated agricultural waste particle composites were then evaluated with respect to the effect ofthe number offabric layers in the composite structure and the inherent effect on the mechanical (flexural and impact strength) and physical (water absorption and thickness swelling) properties. Agricultural waste particle composites without any reinforcement were used as control samples in this study. The test results indicate that theflexural and impactproperties ofparticle composites reinforced with woven colton fabric are better than those for the control samples. It was also determined that both the mechanical andphysical properties improve with increasing fabric layers, except with respect to thickness swelling.

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Journal articles on the topic 'Particle-reinforced composites'

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