The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Amit Rawal - One of the best experts on this subject based on the ideXlab platform.
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Switchable superhydrophobicity of nonwoven materials
Materials Letters, 2012Co-Authors: Amit Rawal, Harshvardhan SaraswatAbstract:Abstract Superhydrophobic materials exhibit water contact angles of more than 150° along with lower roll-off angles. Typically, two wetting states coexist on the hydrophobic surfaces, i.e. Cassie and Wenzel. The Cassie state is responsible for exhibiting superhydrophobicity which is commonly enhanced by the surface roughness. In this research work, it has been demonstrated that the roughness of irregular nonwoven material is altered based on its Fibre Orientation Distribution characteristics. Here, this irregular nature of superhydrophobic nonwoven material is probed through a simple two-dimensional (2D) analytical model. A comparison is also made between the theoretical and experimental results of water contact angles with thermally bonded nonwoven materials.
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Switchable superhydrophobicity of nonwoven materials
Materials Letters, 2012Co-Authors: Amit Rawal, Harshvardhan SaraswatAbstract:Superhydrophobic materials exhibit water contact angles of more than 150°along with lower roll-off angles. Typically, two wetting states coexist on the hydrophobic surfaces, i.e. Cassie and Wenzel. The Cassie state is responsible for exhibiting superhydrophobicity which is commonly enhanced by the surface roughness. In this research work, it has been demonstrated that the roughness of irregular nonwoven material is altered based on its Fibre Orientation Distribution characteristics. Here, this irregular nature of superhydrophobic nonwoven material is probed through a simple two-dimensional (2D) analytical model. A comparison is also made between the theoretical and experimental results of water contact angles with thermally bonded nonwoven materials. © 2012 Elsevier B.V. All rights reserved.
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Design parameters for a robust superhydrophobic electrospun nonwoven mat
Langmuir, 2012Co-Authors: Amit RawalAbstract:Superhydrophobicity is often described in terms of water contact angles higher than 150° along with lower roll-off angles. Surface roughness is one of the main parameters responsible for inducing superhydrophobicity on any material. One such intriguing material is superhydrophobic electrospun nonwoven mat but the design parameters for creating surface roughness are unclear primarily due to its irregular surface. Here, this irregular nature of superhydrophobic electrospun mat is probed through a simple analytical model based on the first principles of stereology revealing the important design parameters as porosity and Fibre Orientation Distribution. Theoretically, we have shown that simply enhancing the porosity of an electrospun mat having intrinsic hydrophilic Fibres, can still demonstrate the superhydrophobic behaviour. © 2011 Elsevier B.V. All rights reserved.
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Tunable superhydrophobic electrospun nonwoven mat
Materials Letters, 2011Co-Authors: Amit RawalAbstract:Abstract Superhydrophobicity is often described in terms of water contact angles higher than 150° along with lower roll-off angles. Surface roughness is one of the main parameters responsible for inducing superhydrophobicity on any material. One such intriguing material is superhydrophobic electrospun nonwoven mat but the design parameters for creating surface roughness are unclear primarily due to its irregular surface. Here, this irregular nature of superhydrophobic electrospun mat is probed through a simple analytical model based on the first principles of stereology revealing the important design parameters as porosity and Fibre Orientation Distribution. Theoretically, we have shown that simply enhancing the porosity of an electrospun mat having intrinsic hydrophilic Fibres, can still demonstrate the superhydrophobic behaviour.
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Tunable superhydrophobic electrospun nonwoven mat
Mater. Lett., 2011Co-Authors: Amit RawalAbstract:Superhydrophobicity is often described in terms of water contact angles higher than 150 along with lower roll-off angles. Surface roughness is one of the main parameters responsible for inducing superhydrophobicity on any material. One such intriguing material is superhydrophobic electrospun nonwoven mat but the design parameters for creating surface roughness are unclear primarily due to its irregular surface. Here, this irregular nature of superhydrophobic electrospun mat is probed through a simple analytical model based on the first principles of stereology revealing the important design parameters as porosity and Fibre Orientation Distribution. Theoretically, we have shown that simply enhancing the porosity of an electrospun mat having intrinsic hydrophilic Fibres, can still demonstrate the superhydrophobic behaviour. 2011 Elsevier B.V. All rights reserved.
Harshvardhan Saraswat - One of the best experts on this subject based on the ideXlab platform.
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Switchable superhydrophobicity of nonwoven materials
Materials Letters, 2012Co-Authors: Amit Rawal, Harshvardhan SaraswatAbstract:Abstract Superhydrophobic materials exhibit water contact angles of more than 150° along with lower roll-off angles. Typically, two wetting states coexist on the hydrophobic surfaces, i.e. Cassie and Wenzel. The Cassie state is responsible for exhibiting superhydrophobicity which is commonly enhanced by the surface roughness. In this research work, it has been demonstrated that the roughness of irregular nonwoven material is altered based on its Fibre Orientation Distribution characteristics. Here, this irregular nature of superhydrophobic nonwoven material is probed through a simple two-dimensional (2D) analytical model. A comparison is also made between the theoretical and experimental results of water contact angles with thermally bonded nonwoven materials.
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Switchable superhydrophobicity of nonwoven materials
Materials Letters, 2012Co-Authors: Amit Rawal, Harshvardhan SaraswatAbstract:Superhydrophobic materials exhibit water contact angles of more than 150°along with lower roll-off angles. Typically, two wetting states coexist on the hydrophobic surfaces, i.e. Cassie and Wenzel. The Cassie state is responsible for exhibiting superhydrophobicity which is commonly enhanced by the surface roughness. In this research work, it has been demonstrated that the roughness of irregular nonwoven material is altered based on its Fibre Orientation Distribution characteristics. Here, this irregular nature of superhydrophobic nonwoven material is probed through a simple two-dimensional (2D) analytical model. A comparison is also made between the theoretical and experimental results of water contact angles with thermally bonded nonwoven materials. © 2012 Elsevier B.V. All rights reserved.
P J Hine - One of the best experts on this subject based on the ideXlab platform.
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Glass Fibre Orientation within injection moulded automotive pedal: Simulation and experimental studies
Plastics Rubber and Composites, 2020Co-Authors: Ben Whiteside, P J Hine, Philip D. Coates, R. A. DuckettAbstract:Abstract Modelling and measurement of the Fibre Orientation Distribution within a reinforced thermoplastic automotive clutch pedal are presented. Products have been manufactured on an injection moulding machine equipped with accurate process monitoring. The Fibre Orientation Distributions at selected points within the pedal were measured using a fully automated, polished section/reflection microscopy image analysis system. Simulation was undertaken using commercial software with a Fibre Orientation prediction algorithm. The predicted Fibre Orientation Distributions are compared with experimental results in order to assess the accuracy of the software in both thin and thick (∼5 mm) sections of the pedal.
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an experimental investigation of the combined influence of notch size and Fibre Orientation on the fatigue strength of a short glass Fibre reinforced polyamide 6
Polymer Testing, 2015Co-Authors: A Bernasconi, Edoardo Conrado, P J HineAbstract:Abstract An experimental study of the fatigue strength of injection moulded short Fibre reinforced polyamide plates is presented, which investigated the combined effect of notch tip radius and injection gate position on injection moulded specimens. Fatigue tests were conducted on samples having two symmetric V-shaped notches, with a fillet radius varying from 0.5 to 2 mm. The injection moulding conditions and resulting Fibre Orientation Distribution were varied by injecting the plates longitudinally and laterally. For the same type of injection gate, the influence of the notch root radius appeared to be negligible, with the exception of the smallest radius which had a lower strength. Measurements of Fibre Orientation showed that the smallest radius modified the local Fibre structure, and fatigue crack growth observations showed that the crack propagation phase become dominant with the smallest radius.
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analysis of Fibre Orientation Distribution in short Fibre reinforced polymers a comparison between optical and tomographic methods
Composites Science and Technology, 2012Co-Authors: A Bernasconi, Francesca Cosmi, P J HineAbstract:Abstract The Fibre Orientation Distribution in a material sample of short Fibre reinforced polyamide extracted from an injection moulded notched plate was analysed using two different methods, one based on micro-computed tomography and the Mean Intercept Length concept and the other based on the classical optical section method. The two methods were compared in terms of the preferred Fibre Orientation at a chosen position, and the agreement was found to be excellent provided the correct section plane was chosen for the optical method. The optical method was applied to different section planes to ascertain the best choice. Comparisons with the optical method, which can provide the full Fibre Orientation Distribution, confirm that the analysis based on the MIL concept is capable of capturing important information about the Fibre Orientation.
Stephen Rose - One of the best experts on this subject based on the ideXlab platform.
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ISBI - A spatio-temporal atlas of neonatal diffusion MRI based on kernel ridge regression
2017 IEEE 14th International Symposium on Biomedical Imaging (ISBI 2017), 2020Co-Authors: Kaikai Shen, Jurgen Fripp, Kerstin Pannek, Paul Colditz, Joanne M. George, Roslyn N. Boyd, Stephen RoseAbstract:Spatio-temporal atlas is a useful tool in imaging studies of neurodevelopment, which characterizes the growth of brain, and allows the monitoring of its development. The imaging of preterm and term born infants provides opportunities to develop a series of spatio-temporal atlases that track the changes during the particular period of neurodevelopment between. The aim of this paper is to develop a spatio-temporal atlas of diffusion MRI for neonatal brains between 32 to 42 weeks postmenstrual age (PMA). We subdivided the cohort consisting of preterm- and term-born infants according to their PMA at the MRI scan based on a kernel ridge regression, and generated the atlases based on Fibre Orientation Distribution (FOD) reconstruction of the diffusion data.
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A spatio-temporal atlas of neonatal diffusion MRI based on kernel ridge regression
2017 IEEE 14th International Symposium on Biomedical Imaging (ISBI 2017), 2017Co-Authors: Kaikai Shen, Jurgen Fripp, Kerstin Pannek, Joanne George, Paul Colditz, Roslyn Boyd, Stephen RoseAbstract:Spatio-temporal atlas is a useful tool in imaging studies of neurodevelopment, which characterizes the growth of brain, and allows the monitoring of its development. The imaging of preterm and term born infants provides opportunities to develop a series of spatio-temporal atlases that track the changes during the particular period of neurodevelopment between. The aim of this paper is to develop a spatio-temporal atlas of diffusion MRI for neonatal brains between 32 to 42 weeks postmenstrual age (PMA). We subdivided the cohort consisting of preterm- and term-born infants according to their PMA at the MRI scan based on a kernel ridge regression, and generated the atlases based on Fibre Orientation Distribution (FOD) reconstruction of the diffusion data.
Lars A. Berglund - One of the best experts on this subject based on the ideXlab platform.
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Processing and mechanical properties of orientated preformed glass-mat-reinforced thermoplastics
Composites Science and Technology, 1993Co-Authors: Mats L. Ericson, Lars A. BerglundAbstract:The stiffness and strength of moulded, glass-mat-reinforced thermoplastics (GMT) components would be increased by the presence of highly orientated Fibres at critical locations. A previously described method to produce preformed GMT materials was therefore further developed to make Orientation of the Fibres in the preform possible. Two 'Orientation plates' were used to orientate the Fibres during spray-up of a glass-Fibre/polyethylene preform. The preform was then heated by hot gas and compression moulded. The ratio of the highest and lowest stiffnesses of a given plate was in the range of 2??7 to 3??8. Micromechanics equations were used with classical lamination theory to design a model laminate with stiffness properties in close agreement with experimental data. Reasons for the relatively wide Fibre Orientation Distribution and low Fibre length efficiency factor obtained for the model laminate are discussed and improvements suggested. ?? 1993.