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Volume fraction

About: Volume fraction is a research topic. Over the lifetime, 16312 publications have been published within this topic receiving 374181 citations.


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Journal ArticleDOI
TL;DR: In this paper, the authors presented fracture energy data for an epoxy-alumina trihydrate composite system in which both the volume fraction and particle size of the dispersion were changed.
Abstract: Fracture energy data are presented for an epoxy-alumina trihydrate composite system in which both the volume fraction and particle size of the dispersion were changed. These data show that the fracture energy of a brittle epoxy composite can be significantly increased by choosing the proper volume fraction and particle size of the dispersed second phase. The results are discussed in terms of several mechanisms which could account for the observed increase in fracture energy. A recently proposed mechanism of crack interaction with a second phase dispersion is qualitatively consistent with these results.

256 citations

Journal ArticleDOI
TL;DR: In this article, the steady-state viscosity of carbon nanotubes water-based nanofluids is investigated considering the influence of particle volume fraction and temperature ranging from 0 to 40°C.

253 citations

Journal ArticleDOI
TL;DR: In this paper, the reinforcing efficiency of MWNTs in the composites follows the volume fraction rule of discontinuous fibers in the grain size range down to 70nm, which is the same as in this paper.

252 citations

Journal ArticleDOI
TL;DR: In this paper, the synthesis of highly stable exfoliated graphene based nanofluids with water and ethylene glycol as base fluids with out any surfactant and subsequent studies on their thermal and electrical conductivities.
Abstract: We report for the first time, the synthesis of highly stable exfoliated graphene based nanofluids with water and ethylene glycol as base fluids with out any surfactant and the subsequent studies on their thermal and electrical conductivities. Graphene was synthesized by thermal exfoliation of graphene oxide at 1050 °C in Ar atmosphere. The as-synthesized graphene has been suitably functionalized and further dispersed it in the base fluids without any surfactant. Thermal and electrical conductivities of these nanofluids were measured for varying volume fractions and at different temperatures. An enhancement in thermal conductivity by about 14% has been achieved at 25 °C with deionized water (DI) as base fluid at a very low volume fraction of 0.056% which increases to about 64% at 50 °C. Electrical conductivity measurements for these nanofluids indicate an enormous enhancement at 25 °C for a volume fraction of 0.03%in DI water.

252 citations

Journal ArticleDOI
TL;DR: In this paper, the volume fraction of dispersed phase necessary to form an infinitely long network as a function of the particle size ratio is considered, where neither a monolayer nor a double layer of dispersed particles around the primary phase is a necessary condition for continuity.
Abstract: A model is developed which considers the volume fraction of dispersed phase necessary to form an infinitely long network as a function of the particle size ratio. Recognizing that neither a monolayer nor a double layer of dispersed particles around the primary phase is a necessary condition for continuity, the surface fraction of primary phase covered by the dispersed phase and the ratio of dispersed phase particles which are occluded from, versus contiguous to, the primary phase are estimated either empirically or by reference to probability theory. The theoretical results are compared with earlier experimental work on electrical properties of compacted mixtures of polymer and metal powders.

251 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023965
20222,020
2021744
2020736
2019786
2018696