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Impact-activated solidification of cornstarch and water suspensions

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Impact-activated solidification of cornstarch and water suspensionsby Scott R. Waitukaitis.
作者:	Waitukaitis, Scott R.
出版者:	Cham :Springer International Publishing :2015.
面頁冊數:	xviii, 88 p. :ill., digital ;24 cm.
Contained By:	Springer eBooks
標題:	Solidification.
電子資源:	http://dx.doi.org/10.1007/978-3-319-09183-9
ISBN:	9783319091839 (electronic bk.)

Impact-activated solidification of cornstarch and water suspensions
Waitukaitis, Scott R.

Impact-activated solidification of cornstarch and water suspensions[electronic resource] /by Scott R. Waitukaitis. - Cham :Springer International Publishing :2015. - xviii, 88 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Introduction -- Freely Accelerating Impact into Cornstarch and Water Suspensions -- Dynamic Jamming Fronts in a Model 2D System -- Speed-Controlled Impact into Cornstarch and Water Suspensions -- Results and Conclusions -- A: Penetration Regime in Freely Accelerating Impact -- B: Details of X-Ray Experiments -- C: Detailed Discussion of Added Mass -- D: "Viscous" Model for Impact -- E: Cornstarch Particle Modulus -- F: 1D Model of Particles Immersed in a Viscous Liquid.

This thesis approaches impact resistance in dense suspensions from a new perspective. The most well-known example of dense suspensions, a mixture of cornstarch and water, provides enough impact resistance to allow a person to run across its surface. In the past, this phenomenon had been linked to "shear thickening" under a steady shear state attributed to hydrodynamic interactions or granular dilation. However, neither explanation accounted for the stress scales required for a person to run on the surface. Through this research, it was discovered that the impact resistance is due to local compression of the particle matrix. This compression forces the suspension across the jamming transition and precipitates a rapidly growing solid mass. This growing solid, as a result, absorbs the impact energy. This is the first observation of such jamming front, linking nonlinear suspension dynamics in a new way to the jamming phase transition known from dry granular materials.

ISBN: 9783319091839 (electronic bk.)

Standard No.: 10.1007/978-3-319-09183-9doiSubjects--Topical Terms:

323702
Solidification.

LC Class. No.: TP156.S55

Dewey Class. No.: 669.94

Impact-activated solidification of cornstarch and water suspensions
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520 $a This thesis approaches impact resistance in dense suspensions from a new perspective. The most well-known example of dense suspensions, a mixture of cornstarch and water, provides enough impact resistance to allow a person to run across its surface. In the past, this phenomenon had been linked to "shear thickening" under a steady shear state attributed to hydrodynamic interactions or granular dilation. However, neither explanation accounted for the stress scales required for a person to run on the surface. Through this research, it was discovered that the impact resistance is due to local compression of the particle matrix. This compression forces the suspension across the jamming transition and precipitates a rapidly growing solid mass. This growing solid, as a result, absorbs the impact energy. This is the first observation of such jamming front, linking nonlinear suspension dynamics in a new way to the jamming phase transition known from dry granular materials.
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