The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Mohd Azizuddin Ibrahim - One of the best experts on this subject based on the ideXlab platform.
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flexural strength of banana fibre reinforced epoxy composites produced through vacuum infusion and Hand lay up techniques a comparative study
International Journal of Engineering Materials and Manufacture, 2017Co-Authors: Mohamed Abd Rahman, Abdul Aziz Jasani, Mohd Azizuddin IbrahimAbstract:Natural fiber such as kenaf, sisal, pineapple leaf and banana are growing popular nowadays due to its favor over traditional glass fiber and inorganic material. It is a renewable resources and abundantly available in the market. The composites made of natural fiber are economical, lightweight and environmental friendly. This study works on producing a composite based on the Banana fiber reinforced epoxy resin by using the method of Vacuum Infusion and Hand Lay-up. Banana fiber will be treated with Sodium Hydroxide (NaOH) and water solution for 1 hour and then dried in the oven for 24 hours at 100°C. The composite will be produce based on different fiber volume fraction of 20% and 40% as well as different fiber length of 127mm, and 63mm. In Vacuum Infusion process, a mold made of aluminium have been manufactured according to the size of specimens of 127mm x 12.7mm x 3.2mm in dimension will be used in the preparation of specimens. The specimens of different volume fraction and fiber length produced by vacuum infusion and Hand Lay-up method will be mechanically tested through flexural test. The highest flexural strength is the specimen made by vacuum infusion process with 40% volume fraction and 63mm fiber length, which is 136.27MPa while for the Hand Lay-up process, the highest flexural strength is 80.71 with 40% volume fraction and 63mm fiber length.
Venkata S Naidu - One of the best experts on this subject based on the ideXlab platform.
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tensile flexural and compressive properties of coir silk fiber reinforced hybrid composites
Journal of Reinforced Plastics and Composites, 2010Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, Karthick Raghu, Venkata S NaiduAbstract:The hybrid composites of coir/silk unsaturated polyester-based hybrid composites with different fiber lengths were prepared. Coir-silk fibers are taken in the ratio of 1 : 1, and these fibers are incorporated with unsaturated polyester resin with different fiber lengths like 1, 2, and 3 cm. The variation of mechanical properties such as tensile strength, flexural strength, and compressive strength of these composites with different fiber lengths has been studied. In the present work Hand Lay-up method was used for making the composites. Coir fibers are treated with NaOH and the effect of alkali treatment on the tensile, flexural, and compressive properties of the coir/silk hybrid composites has also been studied. Significant improvement in tensile, flexural, and compressive strengths of the coir/silk hybrid composites has been observed by these treatments.
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chemical resistance studies of silk sisal fiber reinforced unsaturated polyester based hybrid composites
Journal of Reinforced Plastics and Composites, 2010Co-Authors: Karthick Raghu, Noorunnisa P Khanam, Venkata S NaiduAbstract:The natural fiber environmental friendly composites of untreated and alkali treated silk-sisal unsaturated polyester-based hybrid composites were prepared by using Hand Lay-up technique. The fiber length was taken as 2 cm and the sisal fibers were treated with 2% NaOH. The chemical resistance of the treated and untreated silk/sisal hybrid composites to various acids, alkalis, and solvents was studied. The chemical resistance tests of these hybrid composites were performed in order to find out whether these composites can be used for manufacturing products that are resistant to chemicals.
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mechanical properties of coir glass fiber phenolic resin based composites
Journal of Reinforced Plastics and Composites, 2009Co-Authors: Mithil N Kumar, Venkata G Reddy, Venkata S Naidu, Shobha T Rani, M C S SubhaAbstract:Phenolic resin based coir/glass hybrid composites were developed using compression molding followed by Hand Lay-up technique. Mechanical properties such as tensile and flexural properties of coir based hybrid composites were investigated as a function of fiber content and fiber volume fraction. This study is focused on the mechanical performance of coir based and its hybrid composites. Results showed that tensile properties increase with increasing fiber content. Mechanical properties of composites with increased glass fiber content have high values. The effect of alkali-treatment of fibers on the mechanical properties was also studied. Significant improvement in coir based composites by alkali-treatment was observed. Overall studies indicated that the short coir/ glass fabric hybrid polyester composites are promising candidates for structural applications where high strength and stiffness is required.
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chemical resistance of sisal glass reinforced unsaturated polyester hybrid composites
Journal of Reinforced Plastics and Composites, 2007Co-Authors: K Joh, Venkata S NaiduAbstract:The unsaturated polyester resin based sisal/glass hybrid composites were developed using the Hand Lay-up technique. Chemical resistance tests of these hybrid composites were performed in order to probe whether these composites can be used for making articles that are resistant to chemicals. The hybrid samples and the matrix have been tested for various acids, alkalis, and solvents. It is observed from the results that the developed hybrid composites are resistant to all the tested chemicals except carbon tetrachloride.
Paulo J Davim - One of the best experts on this subject based on the ideXlab platform.
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new machinability study of glass fibre reinforced plastics using polycrystalline diamond and cemented carbide k15 tools
Materials & Design, 2007Co-Authors: Paulo J Davim, Francisco MataAbstract:Abstract The machinability refers to the ease or difficulty with which a given composite material can be machined. It is very important to understand the factors affecting the machinability and to evaluate their effects. This paper aims to investigate the machinability in turning processes of glass fibre reinforced plastics (GFRP’s) manufactured by Hand Lay-up. A plan of experiments was performed on controlled machining with cutting parameters prefixed in workpiece. A statistical technique, using orthogonal arrays and analysis of variance (ANOVA), has been employed to know the influence of cutting parameters on specific cutting pressure and surface roughness. The objective is to evaluate the machinability of these materials in function of cutting tool (polycrystalline diamond and cemented carbide tools). A new machinability index has been proposed.
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a new machinability index in turning fiber reinforced plastics
Journal of Materials Processing Technology, 2005Co-Authors: Paulo J Davim, Francisco MataAbstract:Abstract This article presents a study on the machinability in turning processes of fiber reinforced plastics (FRPs) using polycrystalline diamond cutting tools. Controlled machining experiments was performed with cutting parameters prefixed in the workpiece. A statistical technique, using orthogonal arrays and analysis of variance, was employed to investigate the influence of cutting parameters on specific cutting pressure and surface roughness. The objective is to evaluate the machinability of these materials as a function of manufacturing process (filament winding and Hand Lay-up). A new machinability index has been proposed.
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drilling fiber reinforced plastics frps manufactured by Hand lay up influence of matrix viapal vup 9731 and atlac 382 05
Journal of Materials Processing Technology, 2004Co-Authors: Paulo J Davim, Pedro Reis, Carlos Alberto Conceicao AntonioAbstract:Abstract Drilling composite materials is a very common and an important process used in industry to perform the assembly of aerospace and automotive composite structures. However, drilling composite materials present a number of problems such as delamination associated with the characteristics of the material and with the used cutting parameters. In order to reduce these problems a study is present with the objective of evaluating the cutting parameters (cutting velocity and feed) and the influence of the matrix under specific cutting force (kc), delamination factor (Fd) and surface roughness (Ra) in two types of matrix (Viapal VUP 9731 and ATLAC 382-05). A plan of experiments, based on the orthogonal array, was established considering drilling with prefixed cutting parameters in two Hand Lay-up FRPs materials. Finally the analysis of variance (ANOVA) was preformed to investigate the cutting characteristics of FRPs composite material using a cemented carbide (K10) drill with appropriate geometry.
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a study on milling of glass fiber reinforced plastics manufactured by Hand lay up using statistical analysis anova
Composite Structures, 2004Co-Authors: Paulo J Davim, Pedro Reis, Carlos Alberto Conceicao AntonioAbstract:Milling is the most practical machining (corrective) operation for removing excess material to produce a well defined and high quality surface. However, milling composite materials presents a number of problems such as surface delamination associated with the characteristics of the material and the cutting parameters used. In order to minimize these problem is presented a study with the objective of evaluating the cutting parameters (cutting velocity and feed rate) related to machining force in the workpiece, delamination factor, surface roughness and international dimensional precision in two GFRP composite materials (Viapal VUP 9731 and ATLAC 382-05). A plan of experiments, based on an orthogonal array, was established considering milling with prefixed cutting parameters. Finally an analysis of variance (ANOVA) was preformed to investigate the cutting characteristics of GFRP composite materials using a cemented carbide (K10) end mill.
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experimental study of drilling glass fiber reinforced plastics gfrp manufactured by Hand lay up
Composites Science and Technology, 2004Co-Authors: Paulo J Davim, Pedro Reis, Carlos Alberto Conceicao AntonioAbstract:Drilling is a frequently practiced machining process in industry due to the need for component assembly in mechanical pieces and structures. Drilling of composite materials is significantly affected by damage tendency of these materials under action of cutting forces (thrust force and torque). So the aim of this paper is the study of the cutting parameters (cutting velocity and feed rate) under specific cutting pressure, thrust force, damage and surface roughness in Glass Fiber Reinforced Plastics (GFRP's). A plan of experiments, based on the techniques of Taguchi, was established considering drilling with prefixed cutting parameters in a Hand Lay-up GFRP material. The analysis of variance (ANOVA) was performed to investigate the cutting characteristics of GFRP's using Cemented Carbide (K10) drills with appropriate geometries. The objective was to establish a correlation between cutting velocity and feed rate with the specific cutting pressure, thrust force, damage factor and surface roughness, in a GFRP material.
Hiroyuki Hamada - One of the best experts on this subject based on the ideXlab platform.
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tensile properties of bamboo jute and kenaf mat reinforced composite
Energy Procedia, 2014Co-Authors: Toshihiko Hojo, Yuqiu Yang, Zhilan Xu, Hiroyuki HamadaAbstract:Abstract Natural fibers, characterized by sustainability, have gained a considerable attention in recent years, due to their advantages of environmental acceptability and commercial viability. In this paper, several kinds of composites with natural fiber mat as reinforcement and unsaturated polyester(UP) as matrix, including jute/UP, kenaf/UP and bamboo/UP, were fabricated by Hand Lay-up and compression molding methods. Their tensile properties were tested and discussed, as well as the low cycle fatigue(LCF) behavior of three composites, which was compared with glass/UP. After the test, the fracture cross sectional observations were carried out on the selected test specimens using a scanning electron microscope(SEM),with a focus on the fracture morphologies.
Carlos Alberto Conceicao Antonio - One of the best experts on this subject based on the ideXlab platform.
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drilling fiber reinforced plastics frps manufactured by Hand lay up influence of matrix viapal vup 9731 and atlac 382 05
Journal of Materials Processing Technology, 2004Co-Authors: Paulo J Davim, Pedro Reis, Carlos Alberto Conceicao AntonioAbstract:Abstract Drilling composite materials is a very common and an important process used in industry to perform the assembly of aerospace and automotive composite structures. However, drilling composite materials present a number of problems such as delamination associated with the characteristics of the material and with the used cutting parameters. In order to reduce these problems a study is present with the objective of evaluating the cutting parameters (cutting velocity and feed) and the influence of the matrix under specific cutting force (kc), delamination factor (Fd) and surface roughness (Ra) in two types of matrix (Viapal VUP 9731 and ATLAC 382-05). A plan of experiments, based on the orthogonal array, was established considering drilling with prefixed cutting parameters in two Hand Lay-up FRPs materials. Finally the analysis of variance (ANOVA) was preformed to investigate the cutting characteristics of FRPs composite material using a cemented carbide (K10) drill with appropriate geometry.
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a study on milling of glass fiber reinforced plastics manufactured by Hand lay up using statistical analysis anova
Composite Structures, 2004Co-Authors: Paulo J Davim, Pedro Reis, Carlos Alberto Conceicao AntonioAbstract:Milling is the most practical machining (corrective) operation for removing excess material to produce a well defined and high quality surface. However, milling composite materials presents a number of problems such as surface delamination associated with the characteristics of the material and the cutting parameters used. In order to minimize these problem is presented a study with the objective of evaluating the cutting parameters (cutting velocity and feed rate) related to machining force in the workpiece, delamination factor, surface roughness and international dimensional precision in two GFRP composite materials (Viapal VUP 9731 and ATLAC 382-05). A plan of experiments, based on an orthogonal array, was established considering milling with prefixed cutting parameters. Finally an analysis of variance (ANOVA) was preformed to investigate the cutting characteristics of GFRP composite materials using a cemented carbide (K10) end mill.
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experimental study of drilling glass fiber reinforced plastics gfrp manufactured by Hand lay up
Composites Science and Technology, 2004Co-Authors: Paulo J Davim, Pedro Reis, Carlos Alberto Conceicao AntonioAbstract:Drilling is a frequently practiced machining process in industry due to the need for component assembly in mechanical pieces and structures. Drilling of composite materials is significantly affected by damage tendency of these materials under action of cutting forces (thrust force and torque). So the aim of this paper is the study of the cutting parameters (cutting velocity and feed rate) under specific cutting pressure, thrust force, damage and surface roughness in Glass Fiber Reinforced Plastics (GFRP's). A plan of experiments, based on the techniques of Taguchi, was established considering drilling with prefixed cutting parameters in a Hand Lay-up GFRP material. The analysis of variance (ANOVA) was performed to investigate the cutting characteristics of GFRP's using Cemented Carbide (K10) drills with appropriate geometries. The objective was to establish a correlation between cutting velocity and feed rate with the specific cutting pressure, thrust force, damage factor and surface roughness, in a GFRP material.
