The Experts below are selected from a list of 132 Experts worldwide ranked by ideXlab platform
A.g. Gibson - One of the best experts on this subject based on the ideXlab platform.
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effects of water absorption on napier Grass Fibre polyester composites
Composite Structures, 2016Co-Authors: M Abdul S Majid, M Afendi, I. Fahmi, Haslan Fadli Ahmad Marzuki, Ahmad E Hilmi, A.g. GibsonAbstract:Abstract The effect of moisture absorption on untreated and alkaline-treated Napier Grass Fibre-reinforced polyester composites was evaluated. Under room-temperature immersion, the water absorption behaviour of the Napier Grass Fibre composites conformed to the Fickian diffusion mechanism. Compared with the untreated Fibres, the treated Fibres absorbed less water due to the removal of lignin and hemicelluloses. The tensile and flexural strength of the Napier Grass composites decreased with increased water absorption. SEM analysis showed that the treated Napier Grass Fibre composites contained fewer Fibre pull-outs and splits compared with the untreated composites, which supports the improved performance.
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mechanical properties of napier Grass Fibre polyester composites
Composite Structures, 2016Co-Authors: M Abdul S Majid, M Afendi, I. Fahmi, Haslan Fadli Ahmad Marzuki, A.g. GibsonAbstract:Abstract The mechanical properties of Napier Grass Fibre-reinforced composites were characterised. Napier Grass Fibres were extracted through water retting process. The effect of alkali-treatment on the tensile properties and morphology of the Fibres was investigated. The Fibres were alkali-treated using NaOH solutions of various concentrations and subjected to single Fibre testing. The morphology of the Fibres was observed using scanning electron microscopy. The 10% alkali-treated Napier Grass Fibres yielded the highest strength. To fabricate the polymer composites, Napier Grass Fibre and polyester resin were used as the reinforcing material and polymer matrix, respectively. The tensile and flexural properties of the composites were studied. In general, up to a certain threshold value, the tensile and flexural strengths of the composites increased as the Fibre volume fractions increased, following which, there was a reduction in strength. The maximum tensile and flexural strengths of the composites were obtained at 25% Fibre loading.
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Effects of water absorption on Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, E. Ahmad Hilmi, A.g. GibsonAbstract:Abstract The effect of moisture absorption on untreated and alkaline-treated Napier Grass Fibre-reinforced polyester composites was evaluated. Under room-temperature immersion, the water absorption behaviour of the Napier Grass Fibre composites conformed to the Fickian diffusion mechanism. Compared with the untreated Fibres, the treated Fibres absorbed less water due to the removal of lignin and hemicelluloses. The tensile and flexural strength of the Napier Grass composites decreased with increased water absorption. SEM analysis showed that the treated Napier Grass Fibre composites contained fewer Fibre pull-outs and splits compared with the untreated composites, which supports the improved performance.
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Mechanical properties of Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, A.g. GibsonAbstract:Abstract The mechanical properties of Napier Grass Fibre-reinforced composites were characterised. Napier Grass Fibres were extracted through water retting process. The effect of alkali-treatment on the tensile properties and morphology of the Fibres was investigated. The Fibres were alkali-treated using NaOH solutions of various concentrations and subjected to single Fibre testing. The morphology of the Fibres was observed using scanning electron microscopy. The 10% alkali-treated Napier Grass Fibres yielded the highest strength. To fabricate the polymer composites, Napier Grass Fibre and polyester resin were used as the reinforcing material and polymer matrix, respectively. The tensile and flexural properties of the composites were studied. In general, up to a certain threshold value, the tensile and flexural strengths of the composites increased as the Fibre volume fractions increased, following which, there was a reduction in strength. The maximum tensile and flexural strengths of the composites were obtained at 25% Fibre loading.
I. Fahmi - One of the best experts on this subject based on the ideXlab platform.
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Low-velocity impact responses of Napier Fibre/polyester composites
International Journal of Automotive and Mechanical Engineering, 2016Co-Authors: I. Fahmi, M.s. Abdul Majid, Mohd Afendi, E.a. Helmi, J.a. M. HaameemAbstract:The low-velocity impact response of Napier Grass Fibre/polyester composites was investigated. Napier Grass Fibre was used as the reinforcing material in polyester composite laminates. Napier/polyester composites specimens of 10%, 15%, 20%, 25% and 30% Fibre volume fraction were produced using a compression moulding machine. The specimens of the mentioned fractions were impacted with a 5 J energy level using an instrumented drop weight impact tester (IMATEK IM10). The fracture damage of the impacted specimen was analysed using a field-emission scanning electron microscope (FESEM). The experimental result shows the relationship between the volume fraction percentage of Napier Fibres and the impact force, energy absorbed and stiffness of the composites. Pure polyester specimens displayed brittle behaviour with a lower peak force, lower energy absorption and less time to failure compared to Napier reinforced composites. The impacted Napier/polyester composites with Fibre loading of 30% show higher absorbed energy, peak force and longer time to failure. Furthermore, the experiments on each Fibre volume fraction revealed increasing load-bearing capability and energy absorption with an increase in the volume fraction of Napier Fibre. The FESEM observation exhibits various failure mechanisms such as Fibre breakage, Fibre pull-out, matrix cracking and Fibre splitting.
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effects of water absorption on napier Grass Fibre polyester composites
Composite Structures, 2016Co-Authors: M Abdul S Majid, M Afendi, I. Fahmi, Haslan Fadli Ahmad Marzuki, Ahmad E Hilmi, A.g. GibsonAbstract:Abstract The effect of moisture absorption on untreated and alkaline-treated Napier Grass Fibre-reinforced polyester composites was evaluated. Under room-temperature immersion, the water absorption behaviour of the Napier Grass Fibre composites conformed to the Fickian diffusion mechanism. Compared with the untreated Fibres, the treated Fibres absorbed less water due to the removal of lignin and hemicelluloses. The tensile and flexural strength of the Napier Grass composites decreased with increased water absorption. SEM analysis showed that the treated Napier Grass Fibre composites contained fewer Fibre pull-outs and splits compared with the untreated composites, which supports the improved performance.
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mechanical properties of napier Grass Fibre polyester composites
Composite Structures, 2016Co-Authors: M Abdul S Majid, M Afendi, I. Fahmi, Haslan Fadli Ahmad Marzuki, A.g. GibsonAbstract:Abstract The mechanical properties of Napier Grass Fibre-reinforced composites were characterised. Napier Grass Fibres were extracted through water retting process. The effect of alkali-treatment on the tensile properties and morphology of the Fibres was investigated. The Fibres were alkali-treated using NaOH solutions of various concentrations and subjected to single Fibre testing. The morphology of the Fibres was observed using scanning electron microscopy. The 10% alkali-treated Napier Grass Fibres yielded the highest strength. To fabricate the polymer composites, Napier Grass Fibre and polyester resin were used as the reinforcing material and polymer matrix, respectively. The tensile and flexural properties of the composites were studied. In general, up to a certain threshold value, the tensile and flexural strengths of the composites increased as the Fibre volume fractions increased, following which, there was a reduction in strength. The maximum tensile and flexural strengths of the composites were obtained at 25% Fibre loading.
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Effects of water absorption on Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, E. Ahmad Hilmi, A.g. GibsonAbstract:Abstract The effect of moisture absorption on untreated and alkaline-treated Napier Grass Fibre-reinforced polyester composites was evaluated. Under room-temperature immersion, the water absorption behaviour of the Napier Grass Fibre composites conformed to the Fickian diffusion mechanism. Compared with the untreated Fibres, the treated Fibres absorbed less water due to the removal of lignin and hemicelluloses. The tensile and flexural strength of the Napier Grass composites decreased with increased water absorption. SEM analysis showed that the treated Napier Grass Fibre composites contained fewer Fibre pull-outs and splits compared with the untreated composites, which supports the improved performance.
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Mechanical properties of Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, A.g. GibsonAbstract:Abstract The mechanical properties of Napier Grass Fibre-reinforced composites were characterised. Napier Grass Fibres were extracted through water retting process. The effect of alkali-treatment on the tensile properties and morphology of the Fibres was investigated. The Fibres were alkali-treated using NaOH solutions of various concentrations and subjected to single Fibre testing. The morphology of the Fibres was observed using scanning electron microscopy. The 10% alkali-treated Napier Grass Fibres yielded the highest strength. To fabricate the polymer composites, Napier Grass Fibre and polyester resin were used as the reinforcing material and polymer matrix, respectively. The tensile and flexural properties of the composites were studied. In general, up to a certain threshold value, the tensile and flexural strengths of the composites increased as the Fibre volume fractions increased, following which, there was a reduction in strength. The maximum tensile and flexural strengths of the composites were obtained at 25% Fibre loading.
M.s. Abdul Majid - One of the best experts on this subject based on the ideXlab platform.
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Tensile properties of compressed moulded Napier/glass Fibre reinforced epoxy composites
Journal of Physics: Conference Series, 2017Co-Authors: T. S. Fatinah, M J M Ridzuan, M.s. Abdul Majid, Nasrul Amri Mohd Amin, T.w. Hong, Mohd AfendiAbstract:This paper describes the experimental investigation of the tensile properties of compressed moulded Napier Grass Fibres reinforced epoxy composites. The effect of treatment 5% sodium hydroxide (NaOH) concentrated solution and hybridization of Napier with CSM E-glass Fibres on tensile properties was also studied. The untreated and treated Napier Fibres with 25% Fibre loading were fabricated with epoxy resin by a cold press process. 7% Fibre loading of CSM glass Fibre was hybrid as the skin layer for 18% Fibre loading of untreated Napier Grass Fibre. The tensile tests were conducted using Universal Testing Machine in accordance with ASTM D638. The tensile properties of the untreated Napier/epoxy composites were compared with treated Napier/epoxy and untreated Napier/CSM/epoxy composites. The results demonstrated that the tensile performance of untreated Napier Fibre composites was significantly improved by both of the modification; alkali treatment and glass Fibre hybridization. Napier Grass Fibres showed promising potentials to be used as reinforcement in the polymer based composites.
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Low-velocity impact responses of Napier Fibre/polyester composites
International Journal of Automotive and Mechanical Engineering, 2016Co-Authors: I. Fahmi, M.s. Abdul Majid, Mohd Afendi, E.a. Helmi, J.a. M. HaameemAbstract:The low-velocity impact response of Napier Grass Fibre/polyester composites was investigated. Napier Grass Fibre was used as the reinforcing material in polyester composite laminates. Napier/polyester composites specimens of 10%, 15%, 20%, 25% and 30% Fibre volume fraction were produced using a compression moulding machine. The specimens of the mentioned fractions were impacted with a 5 J energy level using an instrumented drop weight impact tester (IMATEK IM10). The fracture damage of the impacted specimen was analysed using a field-emission scanning electron microscope (FESEM). The experimental result shows the relationship between the volume fraction percentage of Napier Fibres and the impact force, energy absorbed and stiffness of the composites. Pure polyester specimens displayed brittle behaviour with a lower peak force, lower energy absorption and less time to failure compared to Napier reinforced composites. The impacted Napier/polyester composites with Fibre loading of 30% show higher absorbed energy, peak force and longer time to failure. Furthermore, the experiments on each Fibre volume fraction revealed increasing load-bearing capability and energy absorption with an increase in the volume fraction of Napier Fibre. The FESEM observation exhibits various failure mechanisms such as Fibre breakage, Fibre pull-out, matrix cracking and Fibre splitting.
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Effects of water absorption on Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, E. Ahmad Hilmi, A.g. GibsonAbstract:Abstract The effect of moisture absorption on untreated and alkaline-treated Napier Grass Fibre-reinforced polyester composites was evaluated. Under room-temperature immersion, the water absorption behaviour of the Napier Grass Fibre composites conformed to the Fickian diffusion mechanism. Compared with the untreated Fibres, the treated Fibres absorbed less water due to the removal of lignin and hemicelluloses. The tensile and flexural strength of the Napier Grass composites decreased with increased water absorption. SEM analysis showed that the treated Napier Grass Fibre composites contained fewer Fibre pull-outs and splits compared with the untreated composites, which supports the improved performance.
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Mechanical properties of Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, A.g. GibsonAbstract:Abstract The mechanical properties of Napier Grass Fibre-reinforced composites were characterised. Napier Grass Fibres were extracted through water retting process. The effect of alkali-treatment on the tensile properties and morphology of the Fibres was investigated. The Fibres were alkali-treated using NaOH solutions of various concentrations and subjected to single Fibre testing. The morphology of the Fibres was observed using scanning electron microscopy. The 10% alkali-treated Napier Grass Fibres yielded the highest strength. To fabricate the polymer composites, Napier Grass Fibre and polyester resin were used as the reinforcing material and polymer matrix, respectively. The tensile and flexural properties of the composites were studied. In general, up to a certain threshold value, the tensile and flexural strengths of the composites increased as the Fibre volume fractions increased, following which, there was a reduction in strength. The maximum tensile and flexural strengths of the composites were obtained at 25% Fibre loading.
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Tensile and Flexural Strength of Untreated Napier Grass Fibre/Polyester Composites
Materials Science Forum, 2015Co-Authors: J.a. M. Haameem, M.s. Abdul Majid, Mohd Afendi, E.a. Helmi, M. Haslan Fadli, I. FahmiAbstract:This paper describes the experimental investigation of the tensile and flexural strength of untreated Napier Grass Fibre reinforced polyester composites. Napier Grass Fibres were extracted trough conventional water retting process and used as reinforcing materials in the polyester composite laminates. Tensile tests were then conducted for the composite specimens from the laminates at 25% Fibre loading using the electronic extensometer setup to obtain the tensile properties. The results show significant differences in tensile strength between random short Fibres laminates and random long Fibrelaminates with the long Fibres yield over 30 % higher in strength.Both the short and long Fibre composites exhibits similar strength with short Fibres having slightly higher flexural strength to long Fibres The laminate also shows higher maximum strength compared to other commonly available natural Fibre composites with almost 75 % improved in the maximum strength compared to the short kenaf Fibre reinforced composites.
Mohd Afendi - One of the best experts on this subject based on the ideXlab platform.
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Tensile properties of compressed moulded Napier/glass Fibre reinforced epoxy composites
Journal of Physics: Conference Series, 2017Co-Authors: T. S. Fatinah, M J M Ridzuan, M.s. Abdul Majid, Nasrul Amri Mohd Amin, T.w. Hong, Mohd AfendiAbstract:This paper describes the experimental investigation of the tensile properties of compressed moulded Napier Grass Fibres reinforced epoxy composites. The effect of treatment 5% sodium hydroxide (NaOH) concentrated solution and hybridization of Napier with CSM E-glass Fibres on tensile properties was also studied. The untreated and treated Napier Fibres with 25% Fibre loading were fabricated with epoxy resin by a cold press process. 7% Fibre loading of CSM glass Fibre was hybrid as the skin layer for 18% Fibre loading of untreated Napier Grass Fibre. The tensile tests were conducted using Universal Testing Machine in accordance with ASTM D638. The tensile properties of the untreated Napier/epoxy composites were compared with treated Napier/epoxy and untreated Napier/CSM/epoxy composites. The results demonstrated that the tensile performance of untreated Napier Fibre composites was significantly improved by both of the modification; alkali treatment and glass Fibre hybridization. Napier Grass Fibres showed promising potentials to be used as reinforcement in the polymer based composites.
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Low-velocity impact responses of Napier Fibre/polyester composites
International Journal of Automotive and Mechanical Engineering, 2016Co-Authors: I. Fahmi, M.s. Abdul Majid, Mohd Afendi, E.a. Helmi, J.a. M. HaameemAbstract:The low-velocity impact response of Napier Grass Fibre/polyester composites was investigated. Napier Grass Fibre was used as the reinforcing material in polyester composite laminates. Napier/polyester composites specimens of 10%, 15%, 20%, 25% and 30% Fibre volume fraction were produced using a compression moulding machine. The specimens of the mentioned fractions were impacted with a 5 J energy level using an instrumented drop weight impact tester (IMATEK IM10). The fracture damage of the impacted specimen was analysed using a field-emission scanning electron microscope (FESEM). The experimental result shows the relationship between the volume fraction percentage of Napier Fibres and the impact force, energy absorbed and stiffness of the composites. Pure polyester specimens displayed brittle behaviour with a lower peak force, lower energy absorption and less time to failure compared to Napier reinforced composites. The impacted Napier/polyester composites with Fibre loading of 30% show higher absorbed energy, peak force and longer time to failure. Furthermore, the experiments on each Fibre volume fraction revealed increasing load-bearing capability and energy absorption with an increase in the volume fraction of Napier Fibre. The FESEM observation exhibits various failure mechanisms such as Fibre breakage, Fibre pull-out, matrix cracking and Fibre splitting.
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Effects of water absorption on Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, E. Ahmad Hilmi, A.g. GibsonAbstract:Abstract The effect of moisture absorption on untreated and alkaline-treated Napier Grass Fibre-reinforced polyester composites was evaluated. Under room-temperature immersion, the water absorption behaviour of the Napier Grass Fibre composites conformed to the Fickian diffusion mechanism. Compared with the untreated Fibres, the treated Fibres absorbed less water due to the removal of lignin and hemicelluloses. The tensile and flexural strength of the Napier Grass composites decreased with increased water absorption. SEM analysis showed that the treated Napier Grass Fibre composites contained fewer Fibre pull-outs and splits compared with the untreated composites, which supports the improved performance.
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Mechanical properties of Napier Grass Fibre/polyester composites
Composite Structures, 2016Co-Authors: M.s. Abdul Majid, I. Fahmi, Mohd Afendi, Haslan Fadli Ahmad Marzuki, A.g. GibsonAbstract:Abstract The mechanical properties of Napier Grass Fibre-reinforced composites were characterised. Napier Grass Fibres were extracted through water retting process. The effect of alkali-treatment on the tensile properties and morphology of the Fibres was investigated. The Fibres were alkali-treated using NaOH solutions of various concentrations and subjected to single Fibre testing. The morphology of the Fibres was observed using scanning electron microscopy. The 10% alkali-treated Napier Grass Fibres yielded the highest strength. To fabricate the polymer composites, Napier Grass Fibre and polyester resin were used as the reinforcing material and polymer matrix, respectively. The tensile and flexural properties of the composites were studied. In general, up to a certain threshold value, the tensile and flexural strengths of the composites increased as the Fibre volume fractions increased, following which, there was a reduction in strength. The maximum tensile and flexural strengths of the composites were obtained at 25% Fibre loading.
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Tensile and Flexural Strength of Untreated Napier Grass Fibre/Polyester Composites
Materials Science Forum, 2015Co-Authors: J.a. M. Haameem, M.s. Abdul Majid, Mohd Afendi, E.a. Helmi, M. Haslan Fadli, I. FahmiAbstract:This paper describes the experimental investigation of the tensile and flexural strength of untreated Napier Grass Fibre reinforced polyester composites. Napier Grass Fibres were extracted trough conventional water retting process and used as reinforcing materials in the polyester composite laminates. Tensile tests were then conducted for the composite specimens from the laminates at 25% Fibre loading using the electronic extensometer setup to obtain the tensile properties. The results show significant differences in tensile strength between random short Fibres laminates and random long Fibrelaminates with the long Fibres yield over 30 % higher in strength.Both the short and long Fibre composites exhibits similar strength with short Fibres having slightly higher flexural strength to long Fibres The laminate also shows higher maximum strength compared to other commonly available natural Fibre composites with almost 75 % improved in the maximum strength compared to the short kenaf Fibre reinforced composites.
C. King - One of the best experts on this subject based on the ideXlab platform.
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characterization for industrial purposes of the Fibre anatomy of perennial ryeGrass and tall fescue stem and leaf at three stages in the primary growth
Grass and Forage Science, 2014Co-Authors: C. King, J. Mceniry, Mark G. Richardson, P OkielyAbstract:Characterization of Grass Fibre is important in assessing its potential for industrial Fibre applications. Stem and leaf sections were sampled from triplicate field plots of two Grass species, perennial ryeGrass (PRG) and tall fescue at three dates (monthly from 12 May) in the primary growth, and were used to (a) isolate individual Fibre cells and (b) prepare transverse sections. Microscopy and image analysis software were used to determine the length and width of individual Fibre cells and the proportion of lignified Fibre in stem and leaf transverse sections. The length and width of individual Fibre cells were greater (P 0·05) on the proportion of lignified Fibre in the transverse-sectional area. However, there was a greater (P < 0·001) proportion of lignified Fibre in the transverse-sectional area of Grass stems than leaves, with tall fescue having a greater (P < 0·05) stem and leaf transverse-sectional area and area of lignified Fibre in transverse section than PRG. Tall fescue harvested at a later stage of growth, with higher proportions of stem than leaf tissue, may be more suitable for industrial Fibre applications.
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Characterization for industrial purposes of the Fibre anatomy of perennial ryeGrass and tall fescue stem and leaf at three stages in the primary growth
Grass and Forage Science, 2013Co-Authors: C. King, J. Mceniry, Mark G. Richardson, Padraig O'kielyAbstract:Characterization of Grass Fibre is important in assessing its potential for industrial Fibre applications. Stem and leaf sections were sampled from triplicate field plots of two Grass species, perennial ryeGrass (PRG) and tall fescue at three dates (monthly from 12 May) in the primary growth, and were used to (a) isolate individual Fibre cells and (b) prepare transverse sections. Microscopy and image analysis software were used to determine the length and width of individual Fibre cells and the proportion of lignified Fibre in stem and leaf transverse sections. The length and width of individual Fibre cells were greater (P 0·05) on the proportion of lignified Fibre in the transverse-sectional area. However, there was a greater (P
