Adhesion force approximation at varying consolidation stresses for fine powder under humid conditions

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dc.contributor.author Dixit, Deepa
dc.contributor.author Karde, Vikram
dc.contributor.author Ghoroi, Chinmay
dc.date.accessioned 2016-11-02T09:59:42Z
dc.date.available 2016-11-02T09:59:42Z
dc.date.issued 2016-10
dc.identifier.citation Karde, Vikram; Dixit, Deepa and Ghoroi, Chinmay, “Adhesion force approximation at varying consolidation stresses for fine powder under humid conditions”, Advanced Powder Technology, DOI: 10.1016/j.apt.2016.09.023, vol.28, no. 2 pp.346-355,Oct. 2016. en_US
dc.identifier.issn 0921-8831
dc.identifier.issn 1568-5527
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2496
dc.identifier.uri http://dx.doi.org/10.1016/j.apt.2016.09.023
dc.identifier.uri by Vikram Karde, Deepa Dixit, and Chinmay Ghoroi
dc.description.abstract Interparticle adhesion forces in fine powders are greatly influenced by varying relative humidity (RH) conditions. The present study estimated the interparticle adhesion forces developed in corn starch powder under humid conditions at varying applied consolidation stresses using tensile strength determination approach. Shear test was used to determine tensile strength of powder at 1–9 kPa consolidation pressures and extrapolated values of tensile strength at zero stress were used for force estimation in non-consolidated powders. A strong dependence of interparticle adhesion force on consolidation and RH conditions was observed, mainly due to alteration in the number of adhesive contacts and contact area. The results indicated that, at low consolidation and high RH, capillary force is the prevailing force contributing to the total interparticle adhesion in contrast to higher consolidation conditions where load induced contact force plays a dominant role. Furthermore, for nonconsolidated samples, the adhesion forces registered a steep jump above 60% RH which was primarily attributed to dominance of the liquid bridge forces. Also, forces determined from tensile strength approach and those predicted theoretically, as a summation of individual forces, yielded a similar trend. Overall, a simple and effective approach for interparticle force estimation of consolidated as well as loosely packed powders under varying humidity conditions is presented here. en_US
dc.format.extent vol.28, no. 2 pp.346-355
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Interparticle adhesion force en_US
dc.subject Tensile strength en_US
dc.subject Humidity en_US
dc.subject Powder flow en_US
dc.subject Capillary force en_US
dc.subject Consolidation en_US
dc.title Adhesion force approximation at varying consolidation stresses for fine powder under humid conditions en_US
dc.type Article en_US
dc.relation.journal Advanced Powder Technology


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