The Experts below are selected from a list of 26370 Experts worldwide ranked by ideXlab platform
Nikhil Gupta - One of the best experts on this subject based on the ideXlab platform.
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a functionally graded syntactic Foam Material for high energy absorption under compression
Materials Letters, 2007Co-Authors: Nikhil GuptaAbstract:Abstract A functionally graded structure for hollow particle (microballoon) filled syntactic Foams is fabricated that is capable of withstanding compression for 60–75% strain without any significant loss in strength. The new functionally graded structure is based on creating a gradient in microballoon wall thickness. This Material has the same volume fraction of microballoons throughout the structure, eliminating the undesirable effects of the present functionally graded composites containing a gradient of particle volume fraction. Three compositions of such Material are fabricated and tested in the present study. Results show that the compressive modulus, strength, and total energy absorption of the new syntactic Foams can be controlled by using appropriate type and volume fraction of microballoons.
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studies on compressive failure features in syntactic Foam Material
Journal of Materials Science, 2001Co-Authors: Nikhil Gupta, Eyassu Woldesenbet, S SankaranAbstract:Syntactic Foam made by mechanical mixing of glass hollow spheres in epoxy resin matrix is characterized for compressive properties in the present study. Volume fraction of hollow spheres in the syntactic Foam under investigation is kept at 67.8%. Effect of specimen aspect ratio on failure behavior and stress-strain curve of the Material is highlighted. Considerable differences are noted in the macroscopic fracture features of the specimen and the stress-strain curve with the variation in specimen aspect ratio, although compressive yield strength values were within a narrow range. Post compression test scanning electron microscopic observations coupled with the macroscopic observations taken during the test helped in explaining the deviation in specimen behavior and in gathering support for the proposed arguments.
Jinsong Zhang - One of the best experts on this subject based on the ideXlab platform.
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radar absorbing combinatorial metaMaterial based on silicon carbide carbon Foam Material embedded with split square ring metal
Results in physics, 2019Co-Authors: Lihai Lin, Yan Wang, Jinsong ZhangAbstract:Abstract A broadband radar absorbing combinatorial Foam metaMaterial (CFMM) was developed and evaluated via simulation and experimentation. CFMM was constructed using silicon carbide/carbon (SiC/C) Foam Material, a FR4 dielectric Material, and a metal pattern. The SiC/C Foam Material was prepared using a template. The metal pattern consists of a square ring with four split gaps in the middle of the ring. As a result of this new design, the influence of metal pattern design geometrical dimensions on the absorption performance of CFMM were discussed, as absorption performance can be adjusted by changing the geometric parameters of the metal patterns. The physical absorption mechanism was clarified through analysis of the field distribution and impedance. Finally, a lightweight broadband CFMM was designed. The designed CFMM exhibit a −10 dB absorption bandwidth from 4 GHz to 18 GHz with a total bulk density of 0.56 g/cm3. Additionally, the absorption performance of the designed CFMM in the case of oblique incidence was studied.
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Radar absorbing combinatorial metaMaterial based on silicon carbide/carbon Foam Material embedded with split square ring metal
Elsevier, 2019Co-Authors: Lihai Lin, Yan Wang, Jinsong ZhangAbstract:A broadband radar absorbing combinatorial Foam metaMaterial (CFMM) was developed and evaluated via simulation and experimentation. CFMM was constructed using silicon carbide/carbon (SiC/C) Foam Material, a FR4 dielectric Material, and a metal pattern. The SiC/C Foam Material was prepared using a template. The metal pattern consists of a square ring with four split gaps in the middle of the ring. As a result of this new design, the influence of metal pattern design geometrical dimensions on the absorption performance of CFMM were discussed, as absorption performance can be adjusted by changing the geometric parameters of the metal patterns. The physical absorption mechanism was clarified through analysis of the field distribution and impedance. Finally, a lightweight broadband CFMM was designed. The designed CFMM exhibit a −10 dB absorption bandwidth from 4 GHz to 18 GHz with a total bulk density of 0.56 g/cm3. Additionally, the absorption performance of the designed CFMM in the case of oblique incidence was studied. Keywords: Foam Materials, MetaMaterial, Radar absorption performanc
S Sankaran - One of the best experts on this subject based on the ideXlab platform.
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studies on compressive failure features in syntactic Foam Material
Journal of Materials Science, 2001Co-Authors: Nikhil Gupta, Eyassu Woldesenbet, S SankaranAbstract:Syntactic Foam made by mechanical mixing of glass hollow spheres in epoxy resin matrix is characterized for compressive properties in the present study. Volume fraction of hollow spheres in the syntactic Foam under investigation is kept at 67.8%. Effect of specimen aspect ratio on failure behavior and stress-strain curve of the Material is highlighted. Considerable differences are noted in the macroscopic fracture features of the specimen and the stress-strain curve with the variation in specimen aspect ratio, although compressive yield strength values were within a narrow range. Post compression test scanning electron microscopic observations coupled with the macroscopic observations taken during the test helped in explaining the deviation in specimen behavior and in gathering support for the proposed arguments.
Wei Chen - One of the best experts on this subject based on the ideXlab platform.
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design of a smart textile mat to study pressure distribution on multiple Foam Material configurations
Applied Sciences on Biomedical and Communication Technologies, 2011Co-Authors: Rik Van Donselaar, Wei ChenAbstract:In this paper, we present a design of a smart textile pressure mat to study the pressure distribution with multiple Foam Material configurations for neonatal monitoring at Neonatal Intensive Care Units (NICU). A smart textile mat with 64 pressure sensors has been developed including software at the Department of Industrial Design, Eindhoven University of Technology (TU/e). The developed sensory mat is able to measure pressure distribution of a neonate inside an incubator, which is expected to provide information for comfort assessment. Experiments at Philips Research and Maxima Medical Centre in the Netherlands demonstrate that the pressure distribution is affected by multiple Foam Material configurations.
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ISABEL - Design of a smart textile mat to study pressure distribution on multiple Foam Material configurations
Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies - ISABEL '11, 2011Co-Authors: Rik Van Donselaar, Wei ChenAbstract:In this paper, we present a design of a smart textile pressure mat to study the pressure distribution with multiple Foam Material configurations for neonatal monitoring at Neonatal Intensive Care Units (NICU). A smart textile mat with 64 pressure sensors has been developed including software at the Department of Industrial Design, Eindhoven University of Technology (TU/e). The developed sensory mat is able to measure pressure distribution of a neonate inside an incubator, which is expected to provide information for comfort assessment. Experiments at Philips Research and Maxima Medical Centre in the Netherlands demonstrate that the pressure distribution is affected by multiple Foam Material configurations.
Lihai Lin - One of the best experts on this subject based on the ideXlab platform.
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radar absorbing combinatorial metaMaterial based on silicon carbide carbon Foam Material embedded with split square ring metal
Results in physics, 2019Co-Authors: Lihai Lin, Yan Wang, Jinsong ZhangAbstract:Abstract A broadband radar absorbing combinatorial Foam metaMaterial (CFMM) was developed and evaluated via simulation and experimentation. CFMM was constructed using silicon carbide/carbon (SiC/C) Foam Material, a FR4 dielectric Material, and a metal pattern. The SiC/C Foam Material was prepared using a template. The metal pattern consists of a square ring with four split gaps in the middle of the ring. As a result of this new design, the influence of metal pattern design geometrical dimensions on the absorption performance of CFMM were discussed, as absorption performance can be adjusted by changing the geometric parameters of the metal patterns. The physical absorption mechanism was clarified through analysis of the field distribution and impedance. Finally, a lightweight broadband CFMM was designed. The designed CFMM exhibit a −10 dB absorption bandwidth from 4 GHz to 18 GHz with a total bulk density of 0.56 g/cm3. Additionally, the absorption performance of the designed CFMM in the case of oblique incidence was studied.
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Radar absorbing combinatorial metaMaterial based on silicon carbide/carbon Foam Material embedded with split square ring metal
Elsevier, 2019Co-Authors: Lihai Lin, Yan Wang, Jinsong ZhangAbstract:A broadband radar absorbing combinatorial Foam metaMaterial (CFMM) was developed and evaluated via simulation and experimentation. CFMM was constructed using silicon carbide/carbon (SiC/C) Foam Material, a FR4 dielectric Material, and a metal pattern. The SiC/C Foam Material was prepared using a template. The metal pattern consists of a square ring with four split gaps in the middle of the ring. As a result of this new design, the influence of metal pattern design geometrical dimensions on the absorption performance of CFMM were discussed, as absorption performance can be adjusted by changing the geometric parameters of the metal patterns. The physical absorption mechanism was clarified through analysis of the field distribution and impedance. Finally, a lightweight broadband CFMM was designed. The designed CFMM exhibit a −10 dB absorption bandwidth from 4 GHz to 18 GHz with a total bulk density of 0.56 g/cm3. Additionally, the absorption performance of the designed CFMM in the case of oblique incidence was studied. Keywords: Foam Materials, MetaMaterial, Radar absorption performanc