Impact-Activated Solidification of Cornstarch and Water Suspensions
Author:   Scott R. Waitukaitis
Publisher:   Springer International Publishing AG
Edition:   2015 ed.
ISBN:  

9783319091822


Pages:   88
Publication Date:   12 August 2014
Format:   Hardback
Availability:   Manufactured on demand   Availability explained
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Impact-Activated Solidification of Cornstarch and Water Suspensions


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Overview

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.

Full Product Details

Author:   Scott R. Waitukaitis
Publisher:   Springer International Publishing AG
Imprint:   Springer International Publishing AG
Edition:   2015 ed.
Dimensions:   Width: 15.50cm , Height: 0.80cm , Length: 23.50cm
Weight:   0.336kg
ISBN:  

9783319091822


ISBN 10:   3319091824
Pages:   88
Publication Date:   12 August 2014
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   Manufactured on demand   Availability explained
We will order this item for you from a manufactured on demand supplier.

Table of Contents

"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."

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