The Experts below are selected from a list of 36 Experts worldwide ranked by ideXlab platform
Li Chen - One of the best experts on this subject based on the ideXlab platform.
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the effect of splicing shape and interval length on the failure mode of laminated composites under tensile condition
Applied Mechanics and Materials, 2010Co-Authors: Guo Li Zhang, Fu You Wang, Guang Wei Chen, Li ChenAbstract:This paper presents an experimental investigation on the failure modes of glass fiber reinforced 2d Woven Fabric with ladder splicing laminate composites. On the basis of [0/0/+45/90/-45/90]s ply sequence, six kinds of laminated performs with different splicing interval lengths which were 4mm, 8mm, 12mm respectively and two different splicing shape which were ladder splicing and double vertical line splicing, and a kind of laminated perform with continuous laminates of 2d glass fiber Woven Fabric were made. By means of RTM molding technology, the technological parameters of RTM processing were designed as follows: injection temperature was 25°C, injection duration time was 180min and injection pressure was 0.4MPa, the epoxy resin based 2d glass fiber Woven Fabric RTM laminated specimen were prepared. According to the GB/T 1447-2005 and GB/T 1449-2005standard test method, the failure modes of 2d glass fiber Woven Fabric laminated RTM specimen were tested. Results show that the failure modes of laminate composites manifest as rapid damage in the form of line inlay mode and wedge shape mode at 4mm interval length condition, and accumulating failure in the form of inlay layer slippage - fiber pulled out mode and fiber fracture - splicing layer deboning mode at 12mm interval length. Otherwise, all fracture position of splicing laminates occurs at the site of splicing line because of the concentration of tensile stress.
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study on the mechanical performance of glass fiber 2d Woven Fabric laminated composites with different splicing shape and interval length
Applied Mechanics and Materials, 2010Co-Authors: Guo Li Zhang, Fu You Wang, Guang Wei Chen, Li ChenAbstract:In order to investigate the effect of splicing shape and splicing interval length of reinforced Fabric on the mechanical performance for manufacturing composite parts in complicated shape with laminated 2d glass fiber Woven Fabric. On the basis of [0o/45o/90o/90o/0o] S ply sequence, six kinds of laminated performs with different splicing interval lengths which were 4mm, 8mm, 12mm respectively and two different splicing shape which were ladder splicing (LS) and double vertical line splicing (DLS), and a kind of laminated perform with continuous laminates (CL) of 2d glass fiber Woven Fabric were made. By means of RTM molding technology, the technological parameters of RTM processing were designed as follows: injection temperature was 25°C, injection duration time was 180min and injection pressure was 0.4MPa, the epoxy resin based 2d glass fiber Woven Fabric RTM laminated specimen were prepared. According to the GB/T 1447-2005 and GB/T 1449-2005standard test method, the tensile and flexural properties of the 2d glass fiber Woven Fabric laminated RTM specimen were tested. It was found that the tensile fracture position were all near the splicing line, the main reason of which was the concentration of tensile stress. The tensile and flexural test results show that the difference of the splicing shape and the splicing interval length will generate a significant effect on the mechanical performance of the laminate. All above experimental results could provide fundamental data to the optimal design complex structure laminated composite parts.
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Study on the Tensile Strength Loss Rate of Glass Fiber 2d Woven Fabric Reinforced Laminates with Ladder Splicing
Applied Mechanics and Materials, 2010Co-Authors: Fu You Wang, Guo Li Zhang, Li Chen, Guang Wei Chen, Qiang ZhouAbstract:This research paper presents an experimental investigation on the tensile strength loss rate of glass fiber reinforced 2d Woven Fabric with ladder splicing laminate composites. On the basis of three kinds of ply sequence, two series of laminates with different plies numbers were prepared through RTM molding technology, including ladder splicing(LS) laminates and continuous laminates (CL). And the RTM technological parameters of RTM processing were designed as follows: injection temperature was room temperature, injection duration time was 180min and injection pressure was 0.5MPa, the epoxy resin based 2d glass fiber Woven Fabric RTM laminated specimen were prepared. According to the GB/T 1447-2005 standard test method, the tensile tests of the 2d glass fiber Woven Fabric laminates were carried out. Results show that the tensile strength loss rate of ladder splicing laminates is 11.05%, 9.37%, 7.78% while the number of plies is 8, 10, 12 respectively. In other words, the tensile strength loss rate is reduced with the plies number increasing. In addition, because of the concentration of tensile stress, all fractures of ladder splicing laminates occur at the site of splicing line.
C F Yen - One of the best experts on this subject based on the ideXlab platform.
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multi scale modeling and characterization of inelastic deformation mechanisms in continuous fiber and 2d Woven Fabric reinforced metal matrix composites
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2014Co-Authors: Brandon Mcwilliams, J Dibelka, C F YenAbstract:Abstract Continuous unidirectional ceramic fiber and Woven Fabric reinforced metal matrix composites (MMCs) have potential to obtain very high specific strengths and stiffnesses, but use in structural applications has thus far been limited by their inherently low ductility, particularly in tensile loading conditions. In this work, a multi-scale micromechanics based finite element framework is used to predict, and understand the effect of microstructure on the tensile deformation behavior, including progressive damage and failure, of ceramic fiber and Fabric reinforced MMCs. A hierarchal approach is implemented in which a micro-scale model is used to determine the transversely isotropic elasto-plastic mechanical behavior of unidirectional fiber reinforced MMC based on the properties of an aluminum alloy matrix, individual ceramic fibers, and the fiber–matrix interface. The validated transversely isotropic constitutive behavior is then input into a unit cell model for a Woven Fabric MMC consisting of unidirectional MMC tows in an aluminum matrix. Parallel experimental tensile testing and characterization of fracture mechanisms are used to validate our model for unidirectional and 2d weave Fabric MMC. Cohesive zones are used to model the interfacial properties at both scales and we are able to quantify the contribution of various deformation and damage mechanisms such as ductile matrix failure, interfacial decohesion, transverse plasticity, and axial fiber fracture to the overall mechanical response of the MMC. It was found that interfacial debonding contributes significantly to the inelastic response of unidirectional and Woven Fabric MMC and that experimental data are relatively well reproduced by a model that assumes a weak interfacial debonding cohesive law (maximum allowable interface stresses on the order of 100 MPa and total work of decohesion=75 J/m2).
N K Naik - One of the best experts on this subject based on the ideXlab platform.
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analytical and experimental studies on ballistic impact behavior of 2d Woven Fabric composites
International Journal of Damage Mechanics, 2015Co-Authors: Kedar S Pandya, Ch Sesha V Kumar, N S Nair, P S Patil, N K NaikAbstract:A generalized analytical formulation is presented for the prediction of ballistic impact behavior of 2d Woven Fabric composite laminates impacted with a rigid cylindrical projectile. The formulatio...
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failure behaviour of plain weave Fabric laminates under in plane shear loading effect of Fabric geometry
Composite Structures, 1995Co-Authors: V K Ganesh, N K NaikAbstract:Abstract The effect of Fabric geometry on the in-plane shear strength and in-plane shear modulus of two-dimensional (2d) orthogonal plain weave Fabric laminates under in-plane shear loading has been investigated. A 2d Woven Fabric strength model has been used for in-plane shear strength predictions, whereas a 2d stiffness model has been used for in-plane shear modulus predictions. The weave geometrical parameters considered are strand width, strand thickness and inter-strand gap and the corresponding fibre volume fractions. The studies were carried out for three idealized laminate configurations. The predicted values were compared with the experimental results. It is observed that Fabric geometry can significantly affect the shear strength and shear modulus.
E Mouchon - One of the best experts on this subject based on the ideXlab platform.
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sol gel mullite matrix sic and mullite 2d Woven Fabric composites with or without zirconia containing interphase elaboration and properties
Journal of The European Ceramic Society, 1996Co-Authors: Ph Colomban, E Bruneton, J L Lagrange, E MouchonAbstract:Abstract The properties of composites made with Fabrics of Nicalon® NLM202 SiC or Nextel® 440 mullite fibers are reported. The method used to make composites is a three stages sol-gel process: (i) in situ gelation of a mixture of alkoxides in a ceramic fiber Fabric; (ii) the deposit of a matrix precursor onto the impregnated Fabrics and (iii) hot-pressing of the stacked Fabrics in a carbon mold. The composites have been studied by SEM and TEM. Three point flexural strength has been measured at room temperature and at 900 °C in air. Local Young's modulus, microhardness and interfacial shear stress have been determined at RT. Micro-Raman spectra and X-ray microanalysis have been used to study the fiber-interface reactions. Using a mixture of aluminium-silicon ester and tributylborate as interface precursor, we obtained a carbon film free SiC-mullite sliding interface. The use of a complementary ZrO2-GeO2 gel interface precursor allows us to obtain dense composites at a low temperature exhibiting good mechanical properties (linear behaviour up to ~180 MPa, even after annealing in air). The effects of a zirconia interphase on the mechanical properties of mullite-mullite composite are also discussed.
Guo Li Zhang - One of the best experts on this subject based on the ideXlab platform.
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the effect of splicing shape and interval length on the failure mode of laminated composites under tensile condition
Applied Mechanics and Materials, 2010Co-Authors: Guo Li Zhang, Fu You Wang, Guang Wei Chen, Li ChenAbstract:This paper presents an experimental investigation on the failure modes of glass fiber reinforced 2d Woven Fabric with ladder splicing laminate composites. On the basis of [0/0/+45/90/-45/90]s ply sequence, six kinds of laminated performs with different splicing interval lengths which were 4mm, 8mm, 12mm respectively and two different splicing shape which were ladder splicing and double vertical line splicing, and a kind of laminated perform with continuous laminates of 2d glass fiber Woven Fabric were made. By means of RTM molding technology, the technological parameters of RTM processing were designed as follows: injection temperature was 25°C, injection duration time was 180min and injection pressure was 0.4MPa, the epoxy resin based 2d glass fiber Woven Fabric RTM laminated specimen were prepared. According to the GB/T 1447-2005 and GB/T 1449-2005standard test method, the failure modes of 2d glass fiber Woven Fabric laminated RTM specimen were tested. Results show that the failure modes of laminate composites manifest as rapid damage in the form of line inlay mode and wedge shape mode at 4mm interval length condition, and accumulating failure in the form of inlay layer slippage - fiber pulled out mode and fiber fracture - splicing layer deboning mode at 12mm interval length. Otherwise, all fracture position of splicing laminates occurs at the site of splicing line because of the concentration of tensile stress.
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study on the mechanical performance of glass fiber 2d Woven Fabric laminated composites with different splicing shape and interval length
Applied Mechanics and Materials, 2010Co-Authors: Guo Li Zhang, Fu You Wang, Guang Wei Chen, Li ChenAbstract:In order to investigate the effect of splicing shape and splicing interval length of reinforced Fabric on the mechanical performance for manufacturing composite parts in complicated shape with laminated 2d glass fiber Woven Fabric. On the basis of [0o/45o/90o/90o/0o] S ply sequence, six kinds of laminated performs with different splicing interval lengths which were 4mm, 8mm, 12mm respectively and two different splicing shape which were ladder splicing (LS) and double vertical line splicing (DLS), and a kind of laminated perform with continuous laminates (CL) of 2d glass fiber Woven Fabric were made. By means of RTM molding technology, the technological parameters of RTM processing were designed as follows: injection temperature was 25°C, injection duration time was 180min and injection pressure was 0.4MPa, the epoxy resin based 2d glass fiber Woven Fabric RTM laminated specimen were prepared. According to the GB/T 1447-2005 and GB/T 1449-2005standard test method, the tensile and flexural properties of the 2d glass fiber Woven Fabric laminated RTM specimen were tested. It was found that the tensile fracture position were all near the splicing line, the main reason of which was the concentration of tensile stress. The tensile and flexural test results show that the difference of the splicing shape and the splicing interval length will generate a significant effect on the mechanical performance of the laminate. All above experimental results could provide fundamental data to the optimal design complex structure laminated composite parts.
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Study on the Tensile Strength Loss Rate of Glass Fiber 2d Woven Fabric Reinforced Laminates with Ladder Splicing
Applied Mechanics and Materials, 2010Co-Authors: Fu You Wang, Guo Li Zhang, Li Chen, Guang Wei Chen, Qiang ZhouAbstract:This research paper presents an experimental investigation on the tensile strength loss rate of glass fiber reinforced 2d Woven Fabric with ladder splicing laminate composites. On the basis of three kinds of ply sequence, two series of laminates with different plies numbers were prepared through RTM molding technology, including ladder splicing(LS) laminates and continuous laminates (CL). And the RTM technological parameters of RTM processing were designed as follows: injection temperature was room temperature, injection duration time was 180min and injection pressure was 0.5MPa, the epoxy resin based 2d glass fiber Woven Fabric RTM laminated specimen were prepared. According to the GB/T 1447-2005 standard test method, the tensile tests of the 2d glass fiber Woven Fabric laminates were carried out. Results show that the tensile strength loss rate of ladder splicing laminates is 11.05%, 9.37%, 7.78% while the number of plies is 8, 10, 12 respectively. In other words, the tensile strength loss rate is reduced with the plies number increasing. In addition, because of the concentration of tensile stress, all fractures of ladder splicing laminates occur at the site of splicing line.
