03962nam 22006855 450 991030041810332120200701222929.03-319-09183-210.1007/978-3-319-09183-9(CKB)3710000000205480(EBL)1783144(SSID)ssj0001297094(PQKBManifestationID)11709208(PQKBTitleCode)TC0001297094(PQKBWorkID)11362422(PQKB)11352795(DE-He213)978-3-319-09183-9(MiAaPQ)EBC1783144(PPN)179928015(EXLCZ)99371000000020548020140728d2015 u| 0engur|n|---|||||txtccrImpact-Activated Solidification of Cornstarch and Water Suspensions /by Scott R. Waitukaitis1st ed. 2015.Cham :Springer International Publishing :Imprint: Springer,2015.1 online resource (100 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Description based upon print version of record.1-322-13784-6 3-319-09182-4 Includes bibliographical references.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Amorphous substancesComplex fluidsFluidsSpectroscopyMicroscopySoft and Granular Matter, Complex Fluids and Microfluidicshttps://scigraph.springernature.com/ontologies/product-market-codes/P25021Fluid- and Aerodynamicshttps://scigraph.springernature.com/ontologies/product-market-codes/P21026Spectroscopy and Microscopyhttps://scigraph.springernature.com/ontologies/product-market-codes/P31090Amorphous substances.Complex fluids.Fluids.Spectroscopy.Microscopy.Soft and Granular Matter, Complex Fluids and Microfluidics.Fluid- and Aerodynamics.Spectroscopy and Microscopy.530.41Waitukaitis Scott Rauthttp://id.loc.gov/vocabulary/relators/aut792303BOOK9910300418103321Impact-Activated Solidification of Cornstarch and Water Suspensions1771593UNINA