The Experts below are selected from a list of 9075 Experts worldwide ranked by ideXlab platform
G P Rodriguez - One of the best experts on this subject based on the ideXlab platform.
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experimental study of the influence of Thickness and ply stacking sequence on the compression after impact strength of carbon fibre reinforced epoxy Laminates
Polymer Testing, 2018Co-Authors: M A Caminero, I Garciamoreno, G P RodriguezAbstract:Abstract Composite structures are particularly vulnerable to impact which drastically reduces their residual strength [1–3]. In this work, the influence of Laminate Thickness, ply-stacking sequence and scaling technique on the impact damage tolerance of CFRP Laminates is investigated by means of compression after impact (CAI) tests. Drop-weight impact tests were carried out to determine impact response of the different composite Laminates. CAI tests were performed in a non-standard CAI device in order to obtain the compression residual strength. In addition, open-hole compression (OHC) tests were performed for comparative purposes. Ultrasonic C-scanning and cross-sections of CAI samples were examined to assess failure mechanisms of the different configurations. It was observed that damage tolerance decreases as impact energy increases. In addition, thicker Laminates show higher CAI strength due to higher bending stiffness. Furthermore, angle-ply Laminates depict better performance in terms of damage tolerance. Finally, the results obtained demonstrate that introducing ply blocking had a negative effect on the damage resistance but, conversely, an improvement of the CAI strength.
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damage resistance of carbon fibre reinforced epoxy Laminates subjected to low velocity impact effects of Laminate Thickness and ply stacking sequence
Polymer Testing, 2017Co-Authors: M A Caminero, I Garciamoreno, G P RodriguezAbstract:Abstract A major concern affecting the efficient use of composite Laminates is the effect of low velocity impact damage on the structural integrity [1–3]. The aim of this study is to characterize and assess the effect of Laminate Thickness, ply-stacking sequence and scaling technique on the damage resistance of CFRP Laminates subjected to low velocity impact. Drop-weight impact tests are carried out to determine impact response. Ultrasonic C-scanning and cross-sectional micrographs are examined to assess failure mechanisms of the different configurations. It is observed that damage resistance decreases as impact energy increases. In addition, thicker Laminates show lower absorbed energy but, conversely, a more extensive delamination due to higher bending stiffness. Thinner Laminates show higher failure depth. Furthermore, quasi-isotropic Laminates show better performance in terms of damage resistance. Finally, the results obtained demonstrate that introducing ply clustering had a negative effect on the damage resistance and on the delamination area.
Zhongjing Ren - One of the best experts on this subject based on the ideXlab platform.
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microstructure and twisting ability of an adjusted antisymmetric angle ply Laminate
Applied Physics Letters, 2019Co-Authors: Zhongjing Ren, Jing Yan, Yong Shi, Quan PanAbstract:This letter describes an adjusted antisymmetric angle ply Laminate that is able to twist as a result of temperature-dependent deformation. A theoretical explanation for this twisting ability is presented and the adjusted architecture of the proposed Laminate is described. The effects of fiber and matrix volume fractions, Laminate angle, total Laminate Thickness, and temperature range on the torsion of the Laminate are analyzed. A sample of the proposed microLaminate is produced by a microfabrication process and tested as the temperature is increased from room temperature to 80 °C. Microscopy images reveal that the microLaminate twists by more than 180° within a length of 200 μm. The proposed material and its twisting ability show great potential for application in microrobotic actuators.This letter describes an adjusted antisymmetric angle ply Laminate that is able to twist as a result of temperature-dependent deformation. A theoretical explanation for this twisting ability is presented and the adjusted architecture of the proposed Laminate is described. The effects of fiber and matrix volume fractions, Laminate angle, total Laminate Thickness, and temperature range on the torsion of the Laminate are analyzed. A sample of the proposed microLaminate is produced by a microfabrication process and tested as the temperature is increased from room temperature to 80 °C. Microscopy images reveal that the microLaminate twists by more than 180° within a length of 200 μm. The proposed material and its twisting ability show great potential for application in microrobotic actuators.
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microstructure and twisting ability of an adjusted antisymmetric angle ply Laminate
Applied Physics Letters, 2019Co-Authors: Zhongjing Ren, Jing Yan, Yong Shi, Quan PanAbstract:This letter describes an adjusted antisymmetric angle ply Laminate that is able to twist as a result of temperature-dependent deformation. A theoretical explanation for this twisting ability is presented and the adjusted architecture of the proposed Laminate is described. The effects of fiber and matrix volume fractions, Laminate angle, total Laminate Thickness, and temperature range on the torsion of the Laminate are analyzed. A sample of the proposed microLaminate is produced by a microfabrication process and tested as the temperature is increased from room temperature to 80 °C. Microscopy images reveal that the microLaminate twists by more than 180° within a length of 200 μm. The proposed material and its twisting ability show great potential for application in microrobotic actuators.
M A Caminero - One of the best experts on this subject based on the ideXlab platform.
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experimental study of the influence of Thickness and ply stacking sequence on the compression after impact strength of carbon fibre reinforced epoxy Laminates
Polymer Testing, 2018Co-Authors: M A Caminero, I Garciamoreno, G P RodriguezAbstract:Abstract Composite structures are particularly vulnerable to impact which drastically reduces their residual strength [1–3]. In this work, the influence of Laminate Thickness, ply-stacking sequence and scaling technique on the impact damage tolerance of CFRP Laminates is investigated by means of compression after impact (CAI) tests. Drop-weight impact tests were carried out to determine impact response of the different composite Laminates. CAI tests were performed in a non-standard CAI device in order to obtain the compression residual strength. In addition, open-hole compression (OHC) tests were performed for comparative purposes. Ultrasonic C-scanning and cross-sections of CAI samples were examined to assess failure mechanisms of the different configurations. It was observed that damage tolerance decreases as impact energy increases. In addition, thicker Laminates show higher CAI strength due to higher bending stiffness. Furthermore, angle-ply Laminates depict better performance in terms of damage tolerance. Finally, the results obtained demonstrate that introducing ply blocking had a negative effect on the damage resistance but, conversely, an improvement of the CAI strength.
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damage resistance of carbon fibre reinforced epoxy Laminates subjected to low velocity impact effects of Laminate Thickness and ply stacking sequence
Polymer Testing, 2017Co-Authors: M A Caminero, I Garciamoreno, G P RodriguezAbstract:Abstract A major concern affecting the efficient use of composite Laminates is the effect of low velocity impact damage on the structural integrity [1–3]. The aim of this study is to characterize and assess the effect of Laminate Thickness, ply-stacking sequence and scaling technique on the damage resistance of CFRP Laminates subjected to low velocity impact. Drop-weight impact tests are carried out to determine impact response. Ultrasonic C-scanning and cross-sectional micrographs are examined to assess failure mechanisms of the different configurations. It is observed that damage resistance decreases as impact energy increases. In addition, thicker Laminates show lower absorbed energy but, conversely, a more extensive delamination due to higher bending stiffness. Thinner Laminates show higher failure depth. Furthermore, quasi-isotropic Laminates show better performance in terms of damage resistance. Finally, the results obtained demonstrate that introducing ply clustering had a negative effect on the damage resistance and on the delamination area.
Quan Pan - One of the best experts on this subject based on the ideXlab platform.
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microstructure and twisting ability of an adjusted antisymmetric angle ply Laminate
Applied Physics Letters, 2019Co-Authors: Zhongjing Ren, Jing Yan, Yong Shi, Quan PanAbstract:This letter describes an adjusted antisymmetric angle ply Laminate that is able to twist as a result of temperature-dependent deformation. A theoretical explanation for this twisting ability is presented and the adjusted architecture of the proposed Laminate is described. The effects of fiber and matrix volume fractions, Laminate angle, total Laminate Thickness, and temperature range on the torsion of the Laminate are analyzed. A sample of the proposed microLaminate is produced by a microfabrication process and tested as the temperature is increased from room temperature to 80 °C. Microscopy images reveal that the microLaminate twists by more than 180° within a length of 200 μm. The proposed material and its twisting ability show great potential for application in microrobotic actuators.This letter describes an adjusted antisymmetric angle ply Laminate that is able to twist as a result of temperature-dependent deformation. A theoretical explanation for this twisting ability is presented and the adjusted architecture of the proposed Laminate is described. The effects of fiber and matrix volume fractions, Laminate angle, total Laminate Thickness, and temperature range on the torsion of the Laminate are analyzed. A sample of the proposed microLaminate is produced by a microfabrication process and tested as the temperature is increased from room temperature to 80 °C. Microscopy images reveal that the microLaminate twists by more than 180° within a length of 200 μm. The proposed material and its twisting ability show great potential for application in microrobotic actuators.
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microstructure and twisting ability of an adjusted antisymmetric angle ply Laminate
Applied Physics Letters, 2019Co-Authors: Zhongjing Ren, Jing Yan, Yong Shi, Quan PanAbstract:This letter describes an adjusted antisymmetric angle ply Laminate that is able to twist as a result of temperature-dependent deformation. A theoretical explanation for this twisting ability is presented and the adjusted architecture of the proposed Laminate is described. The effects of fiber and matrix volume fractions, Laminate angle, total Laminate Thickness, and temperature range on the torsion of the Laminate are analyzed. A sample of the proposed microLaminate is produced by a microfabrication process and tested as the temperature is increased from room temperature to 80 °C. Microscopy images reveal that the microLaminate twists by more than 180° within a length of 200 μm. The proposed material and its twisting ability show great potential for application in microrobotic actuators.
R Vadori - One of the best experts on this subject based on the ideXlab platform.
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influence of the Laminate Thickness in low velocity impact behavior of composite material plate
Composite Structures, 2003Co-Authors: Giovanni Belingardi, R VadoriAbstract:Abstract The low velocity impact behavior of carbon fiber-epoxy matrix Laminates has been studied by experimental drop dart tests. The considered composite Laminate is characterized by two different stacking sequences. Plates of three different values of the Laminate Thickness have been tested both by quasi-static and dynamic impact loading. The force–displacement curves, obtained during tests conducted with different impact velocities, are superimposed in order to point out that the considered material, in the considered loading conditions and impact velocity range, has no sensitivity to strain-rate effect. The energy absorption capability is studied with respect to the different Laminate lay-ups. Finally some considerations are developed on the dependence of the first damage force and maximum force values, of the saturation energy and of the plate flexural stiffness with respect to the Laminate number of layers variable.
