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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Constitutive relationships of granular materials.

Wong, Chak Yan. January 1972 (has links)
No description available.
42

Droplet deformability and emulsion rheology /

Saiki, Yasushi. Unknown Date (has links)
Systematic characterization of emulsion rheology has a substantial importance for its diverse industrial applications. However, it has not been achieved to date due to lack of a deformability controllable model emulsion. / Thesis (PhD)--University of South Australia, 2006
43

Interaction forces, deformation and nano-rheology of emulsion droplets as determined by colloid probe AFM /

Gillies, Graeme Unknown Date (has links)
Atomic force microscopy (AFM) has been used to determine the interaction forces between a spherical silica probe and immobilised colloidal droplets of polydimethylsiloxane (PDMS) in aqueous solution. Between pH 4.5 and 9.5 where PDMS droplets and the silica probe are both negatively charged, a repulsive force is evident that increases less rapidly on surface approach than expected for electrical double layer interaction of rigid particles. The departure from hard-sphere behaviour, i.e. the deformation, has been determined and by varying the extent of internal cross-linking within the PDMS droplets, the influence of bulk rheology and interfacial properties on droplet deformation and nano-rheology has been isolated. For highly cross-linked droplets, the extent of deformation is controlled by the bulk rheology rather than the droplet's interfacial properties. Upon retraction of the surfaces, force curve hysteresis is observed and is due to the viscoelastic response of the PDMS. The extent of hysteresis is dependent on the rate of approach/retraction anf the loading force, and has been theretically fitted to obtain nano-rheological paraameters, which describe the droplet relaxation process. For liquid-like droplets, with a low level of cross-linking, no force curve hysteresis is observed and the elastic deformation may be described by a single spring constant. The spring constant is proportional to the surface tension (as controlled by surfactant adsortion) and the reciprocal of the droplet radius, i.e. deformation is controlled by the Laplace pressure. Furthermore, droplet deformation is altered by the presence of adsorbed nano-particles. These colloid probe AFM studies offer due insight into the deformation and interaction of emulsion droplets and have implications when considering the stability, adhesion and processing of emulsions. / Thesis (PhD)--University of South Australia, 2003.
44

Interaction forces, deformation and nano-rheology of emulsion droplets as determined by colloid probe AFM /

Gillies, Graeme Unknown Date (has links)
Atomic force microscopy (AFM) has been used to determine the interaction forces between a spherical silica probe and immobilised colloidal droplets of polydimethylsiloxane (PDMS) in aqueous solution. Between pH 4.5 and 9.5 where PDMS droplets and the silica probe are both negatively charged, a repulsive force is evident that increases less rapidly on surface approach than expected for electrical double layer interaction of rigid particles. The departure from hard-sphere behaviour, i.e. the deformation, has been determined and by varying the extent of internal cross-linking within the PDMS droplets, the influence of bulk rheology and interfacial properties on droplet deformation and nano-rheology has been isolated. For highly cross-linked droplets, the extent of deformation is controlled by the bulk rheology rather than the droplet's interfacial properties. Upon retraction of the surfaces, force curve hysteresis is observed and is due to the viscoelastic response of the PDMS. The extent of hysteresis is dependent on the rate of approach/retraction anf the loading force, and has been theretically fitted to obtain nano-rheological paraameters, which describe the droplet relaxation process. For liquid-like droplets, with a low level of cross-linking, no force curve hysteresis is observed and the elastic deformation may be described by a single spring constant. The spring constant is proportional to the surface tension (as controlled by surfactant adsortion) and the reciprocal of the droplet radius, i.e. deformation is controlled by the Laplace pressure. Furthermore, droplet deformation is altered by the presence of adsorbed nano-particles. These colloid probe AFM studies offer due insight into the deformation and interaction of emulsion droplets and have implications when considering the stability, adhesion and processing of emulsions. / Thesis (PhD)--University of South Australia, 2003.
45

Thermal deformations of plates produced by temperature distributions satisfying poisson's equation /

McWithey, Robert Richard, January 1966 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute, 1966. / Vita. Abstract. Includes bibliographical references (leaf 42). Also available via the Internet.
46

Modeling of elastic-viscoplastic behavior and its finite element implementation /

Diehl, Ted. January 1988 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1988. / Includes bibliographical references (leaves 67-69).
47

Design of reinforced concrete buildings for restrained and imposed deformations /

Aroonsiri, Nontavat. January 2000 (has links) (PDF)
Thesis (M.Eng.Sc.)--University of Adelaide, Dept. of Civil and Environmental Engineering, 2000? / Errata pasted onto back end paper. Bibliography: p. 257-268.
48

Membrane deformation rate and geometry of subducting slabs /

Chiao, Ling-Yun. January 1991 (has links)
Thesis (Ph. D.)--University of Washington, 1991. / Vita. Includes bibliographical references (leaves [115]-123).
49

Calculation method for permanent deformation of unbound pavement materials /

Korkiala-Tanttu, Leena. January 1900 (has links) (PDF)
Thesis (doctoral)--Helsinki University of Technology, 2009. / Includes bibliographical references. Also available on the World Wide Web.
50

Feature matching of deformable models /

Chen, Xiao Yu. January 2008 (has links)
Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references (leaves 122-130). Also available in electronic version.

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