The Experts below are selected from a list of 1569354 Experts worldwide ranked by ideXlab platform
Woo Il Lee - One of the best experts on this subject based on the ideXlab platform.
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Characterization of boundary conditions during thermoplastic composite tape Lay-up Process using an inverse method
Modelling and Simulation in Materials Science and Engineering, 2003Co-Authors: Sun Kyung Kim, Hee June Kim, Woo Il LeeAbstract:The heat transfer coefficient during the thermoplastic composite tape Lay-up Process is estimated using an inverse method. This paper presents a simple inverse method using the parameter estimation technique combined with a suitable thermal transport model. The numerical simulation of the proposed thermal model is implemented by the finite element method. A small-scale tape Lay-up system is built and experiments are conducted to measure temperature inside the composite during the Process. The inverse method retrieves the unknown heat transfer coefficients by solving an optimization problem, which seeks consistency between the measured and computed temperatures.
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A study on heat transfer during thermoplastic composite tape Lay-up Process
Experimental Thermal and Fluid Science, 1996Co-Authors: Hee June Kim, Sun Kyung Kim, Woo Il LeeAbstract:A study on heat transfer during thermoplastic composite tape Lay-up Process was done. To investigate the relation between major Process variables, experiments as well as numerical simulations were performed. A small-scale tape Lay-up system was built. A hot nitrogen torch was used to heat the prepreg tape. Right after the torch, a compaction roller was located to bond the prepreg plies. Temperatures inside the composite at four different locations through the thickness were measured, using thermocouples. Experiments were done for different Process conditions. Numerical simulations also were performed, using the finite element code developed in this study. A numerical code was run for the same conditions as the experiment. Close agreement was observed between the numerical results and the experimental data.
Hee June Kim - One of the best experts on this subject based on the ideXlab platform.
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Characterization of boundary conditions during thermoplastic composite tape Lay-up Process using an inverse method
Modelling and Simulation in Materials Science and Engineering, 2003Co-Authors: Sun Kyung Kim, Hee June Kim, Woo Il LeeAbstract:The heat transfer coefficient during the thermoplastic composite tape Lay-up Process is estimated using an inverse method. This paper presents a simple inverse method using the parameter estimation technique combined with a suitable thermal transport model. The numerical simulation of the proposed thermal model is implemented by the finite element method. A small-scale tape Lay-up system is built and experiments are conducted to measure temperature inside the composite during the Process. The inverse method retrieves the unknown heat transfer coefficients by solving an optimization problem, which seeks consistency between the measured and computed temperatures.
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A study on heat transfer during thermoplastic composite tape Lay-up Process
Experimental Thermal and Fluid Science, 1996Co-Authors: Hee June Kim, Sun Kyung Kim, Woo Il LeeAbstract:A study on heat transfer during thermoplastic composite tape Lay-up Process was done. To investigate the relation between major Process variables, experiments as well as numerical simulations were performed. A small-scale tape Lay-up system was built. A hot nitrogen torch was used to heat the prepreg tape. Right after the torch, a compaction roller was located to bond the prepreg plies. Temperatures inside the composite at four different locations through the thickness were measured, using thermocouples. Experiments were done for different Process conditions. Numerical simulations also were performed, using the finite element code developed in this study. A numerical code was run for the same conditions as the experiment. Close agreement was observed between the numerical results and the experimental data.
Sun Kyung Kim - One of the best experts on this subject based on the ideXlab platform.
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Characterization of boundary conditions during thermoplastic composite tape Lay-up Process using an inverse method
Modelling and Simulation in Materials Science and Engineering, 2003Co-Authors: Sun Kyung Kim, Hee June Kim, Woo Il LeeAbstract:The heat transfer coefficient during the thermoplastic composite tape Lay-up Process is estimated using an inverse method. This paper presents a simple inverse method using the parameter estimation technique combined with a suitable thermal transport model. The numerical simulation of the proposed thermal model is implemented by the finite element method. A small-scale tape Lay-up system is built and experiments are conducted to measure temperature inside the composite during the Process. The inverse method retrieves the unknown heat transfer coefficients by solving an optimization problem, which seeks consistency between the measured and computed temperatures.
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A study on heat transfer during thermoplastic composite tape Lay-up Process
Experimental Thermal and Fluid Science, 1996Co-Authors: Hee June Kim, Sun Kyung Kim, Woo Il LeeAbstract:A study on heat transfer during thermoplastic composite tape Lay-up Process was done. To investigate the relation between major Process variables, experiments as well as numerical simulations were performed. A small-scale tape Lay-up system was built. A hot nitrogen torch was used to heat the prepreg tape. Right after the torch, a compaction roller was located to bond the prepreg plies. Temperatures inside the composite at four different locations through the thickness were measured, using thermocouples. Experiments were done for different Process conditions. Numerical simulations also were performed, using the finite element code developed in this study. A numerical code was run for the same conditions as the experiment. Close agreement was observed between the numerical results and the experimental data.
Aboubakr Medjahed - One of the best experts on this subject based on the ideXlab platform.
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Processability and mechanical properties of surface modified glass fibres phthalonitrile composite and al li alloy fibre metal laminates
Materials Science and Technology, 2019Co-Authors: Aboubakr Medjahed, Mehdi Derradji, Abdeldjalil Zegaoui, Ruizhi Wu, Bingcheng LiAbstract:In this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a Lay-up Process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li al...
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Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates
Materials Science and Technology, 2019Co-Authors: Aboubakr Medjahed, Mehdi Derradji, Abdeldjalil Zegaoui, Ruizhi Wu, Bingcheng LiAbstract:ABSTRACTIn this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a Lay-up Process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li alloy. The results showed that varying the composite considerably affected the tensile properties of the Al-LiFMLs, as well as exhibiting enhancements over the properties of both the individual Al–Li alloys and GFs/PN composite constituents. For instance, when the number of composite layers varied from 6 to 14, the ultimate tensile strength of the Al-LiFMLs increased from 315 to 611 MPa. It was revealed that the failure mode displayed a more ductile behaviour (up to 20%) for all the developed Al-LiFMLs affected by the ductile fracture mode of the Al–Li alloy.
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Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates
Materials Science and Technology, 2019Co-Authors: Aboubakr Medjahed, Mehdi Derradji, Abdeldjalil ZegaouiAbstract:In this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a Lay-up Process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li al...
Abdeldjalil Zegaoui - One of the best experts on this subject based on the ideXlab platform.
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Processability and mechanical properties of surface modified glass fibres phthalonitrile composite and al li alloy fibre metal laminates
Materials Science and Technology, 2019Co-Authors: Aboubakr Medjahed, Mehdi Derradji, Abdeldjalil Zegaoui, Ruizhi Wu, Bingcheng LiAbstract:In this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a Lay-up Process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li al...
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Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates
Materials Science and Technology, 2019Co-Authors: Aboubakr Medjahed, Mehdi Derradji, Abdeldjalil Zegaoui, Ruizhi Wu, Bingcheng LiAbstract:ABSTRACTIn this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a Lay-up Process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li alloy. The results showed that varying the composite considerably affected the tensile properties of the Al-LiFMLs, as well as exhibiting enhancements over the properties of both the individual Al–Li alloys and GFs/PN composite constituents. For instance, when the number of composite layers varied from 6 to 14, the ultimate tensile strength of the Al-LiFMLs increased from 315 to 611 MPa. It was revealed that the failure mode displayed a more ductile behaviour (up to 20%) for all the developed Al-LiFMLs affected by the ductile fracture mode of the Al–Li alloy.
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Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates
Materials Science and Technology, 2019Co-Authors: Aboubakr Medjahed, Mehdi Derradji, Abdeldjalil ZegaouiAbstract:In this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a Lay-up Process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li al...