EXPERIMENTAL INVESTIGATION OF THE AXIAL IMPREGNATION OF ORIENTED FIBER-BUNDLES BY CAPILLARY FORCES

Date

1991-05-01

Author

BAYRAMLI, E
POWELL, RL

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

147
views

0
downloads

Capillary impregnation of a viscous liquid into carbon fiber bundles is investigated experimentally. Axial impregnation is examined in which flow occurs primarily parallel to the fibers' axes. For silicone oils, as well as for a curing epoxy system, the kinetics of axial impregnation follow closely h-alpha-t1/2, where h is the average displacement of the advancing front and t is the time of impregnation. The impregnation rates are higher than those predicted by theoretical models based upon simple geometries. The rates are strongly influenced by the pore size distribution in the fiber bundles. At a given overall average porosity, higher rates of impregnation are observed for samples having a higher pore heterogeneity than those with a narrow distribution of pore sizes. An analysis of the experimental data is presented which allows the effective pore size distribution to be calculated.

URI

https://hdl.handle.net/11511/65950

Journal

COLLOIDS AND SURFACES

DOI

https://doi.org/10.1016/0166-6622(91)80115-5

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Theoretical and experimental investigation of aqueous liquids contained in carbon nanotubes Yarin, AL; Güvenç Yazıcıoğlu, Almıla; Megaridis, CM; Rossi, MP; Gogotsi, Y (2005-06-01) The dynamic response-as caused by different means of thermal stimulation or pressurization-of aqueous liquid attoliter volumes contained inside carbon nanotubes is investigated theoretically and experimentally. The experiments indicate an energetically driven mechanism responsible for the dynamic multiphase fluid behavior visualized in real time with high spatial resolution using electron microscopy. The theoretical model is formulated using a continuum approach, which combines temperature-dependent mass di...
Thermal stimulation of aqueous volumes contained in carbon nanotubes: Experiment and modeling Yarin, AL; Güvenç Yazıcıoğlu, Almıla; Megaridis, CM (2005-01-01) The dynamic response, as caused by thermal stimulation, of aqueous liquid attoliter volumes contained inside multiwall carbon nanotubes is investigated theoretically and experimentally. The experiments indicate an energetically driven mechanism responsible for the dynamic multiphase fluid behavior visualized under high resolution in the transmission electron microscope. The theoretical model is formulated using a continuum approach, which combines temperature-dependent diffusion with intermolecular interact...
Simulation of crystallization and glass formation processes for binary Pd-Ag metal alloys Kart, HH; Uludogan, M; Cagin, T; Tomak, Mehmet (2003-09-12) Glass formation and crystallization process of Pd-Ag metallic alloys are investigated by means of molecular dynamics simulation. This simulation uses the quantum Sutton-Chen (Q-SC) potential to study structural and transport properties of Pd-Ag alloys. Cooling rates and concentration effects on the glass formation and crystallization of binary alloys considered in this work are investigated. Pd-Ag alloys show the glass structure at fast cooling rates while it crystallizes at slow cooling rates. Increment of...
Experimental and theoretical study on elastic properties of crystalline alkali silicate hydrate Moon, Juhyuk; Kim, Seungchan; Akgül, Çağla; Bae, Sung-Chul; Clark, Simon Martin (Elsevier BV, 2020-01-05) Mechanical properties of synthesized sodium silicate mineral, Na-kanemite, was investigated by synchrotron-based high-pressure x-ray diffraction experiment and first-principles calculations. Under hydrostatic pressure, the 020 interlayer peak was substantially diffused while a new 011 peak formed at 0.4 GPa due to the reduction of Pbcn symmetry. Upon unloading, the diffused interlayer peak reappeared to its original position with a less peak intensity and the newly formed peak disappeared. This temporal but...
Experimental investigation and modeling of dropwise condensation on a horizontal gold coated tube / Serdar, Orhan; Yamalı, Cemil; Department of Mechanical Engineering (2004) The phenomenon dropwise condensation on a horizontal gold coated tube is investigated by both analytical and experimental methods in this study. A computer program is prepared to calculate the dropwise condensation heat transfer rate on the horizontal gold coated tube. An experimental setup was also manufactured to measure the dropwise condensation heat transfer rate. The effects of flow rate, temperature of cooling water and also steam to wall temperature difference have been analytically investigated by u...

Citation Formats

E. BAYRAMLI and R. POWELL, “EXPERIMENTAL INVESTIGATION OF THE AXIAL IMPREGNATION OF ORIENTED FIBER-BUNDLES BY CAPILLARY FORCES,” COLLOIDS AND SURFACES, pp. 83–100, 1991, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65950.