Browse Technical Reports - Theoretical and Applied Mechanics (TAM) by Issue Date

  • Wang, Junlan; Sottos, Nancy R.; Weaver, Richard L. (Department of Theoretical and Applied Mechanics (UIUC), 2003-04)
    Laser induced stress waves are used to characterize intrinsic interfacial strength of thin films under both tensile and mixed-mode conditions. A short-duration compressive pulse induced by pulsed-laser ablation of a ...

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  • Liu, Ming; Hsia, K. Jimmy; Sardela, Mauro, Jr. (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    In-situ x-ray experiments were conducted to examine the electric-field-induced phase changes in PZT-5H materials. The x-ray diffraction profiles at different electric field levels were analyzed by peak fitting and used to ...

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  • Liu, Ming; Hsia, K. Jimmy (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    In-situ x-ray diffraction measurements are conducted on a polycrystalline ferroelectric material PZT-5H at different levels of static electric field. The locking of the electric field induced non-180° domain switching and ...

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  • Fried, Eliot; Gurtin, Morton E. (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    This review presents a unified treatment of several topics at the intersection of continuum mechanics and materials science; the thrust concerns processes involving evolving interfaces, focusing on grain-boundaries, ...

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  • Bhattacharjee, Pratik; Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    Effect of rotation on surface tension gradient driven flow, which is also known as Marangoni convective flow, during protein crystallization is modelled and studied computationally under microgravity conditions, where the ...

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  • Fried, Eliot (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    By studying the asympototic connection between phase-field and sharp-interface theories for transitions between two phases distinguished only by their constant free-energy densities, we show that the configurational force ...

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  • Panat, Rahul Padmakar; Hsia, K. Jimmy (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    Reliable life prediction models for the durability of thermal barrier coatings require the identification of the relative importance of various mechanisms responsible for the failure of the coatings at high temperatures. ...

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  • Dong, Fei; Riahi, Daniel N.; Hsui, Albert T. (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    Compaction generally refers to the relative motion of fluid with respect to the deformable surroundings in a two-phase system. It has many geophysical and engineering applications, including liquefaction, formation of magma ...

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  • Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2003-06)
    The topic of this review article is about some aspect of flow during alloy solidification and the corresponding research development that has been accomplished in the recent years to determine the features of such flows, ...

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  • Sharp, Kendra V.; Adrian, Ronald J. (Department of Theoretical and Applied Mechanics (UIUC), 2003-07)
    The transition to turbulent flow is studied for liquids of different polarities in glass microtubes having diameters between 50 and 247 µm. The onset of transition occurs at Reynolds number ~1800–2000, as indicated by ...

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  • Fried, Eliot; Korchagin, Vladimir A.; Todres, Russell E. (Department of Theoretical and Applied Mechanics (UIUC), 2003-07)
    We use a continuum model to investigate the isochoric axial contraction and expansion of a right circular cylindrical specimen composed of a nematic elastomer that is cross-linked in a uniaxial state and then annealed. ...

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  • Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2003-07)
    The topic of this review article is about some aspects of fluid dynamics during crystallization and the control of such flow by using external constraints such as rotation and magnetic field. Following a brief introduction ...

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  • Balachandar, S.; Adrian, Ronald J.; Ha, M.Y.; Yoon, Hyun-Sik; Hill, David F. (Department of Theoretical and Applied Mechanics (UIUC), 2003-08)
    We consider scaling of flow within a stirred tank with increasing Reynolds number. Experimental results obtained from two different tanks of diameter 152.5 and 292.1 mm, with a Rushton turbine operating at a wide range of ...

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  • Hill, Kimberly M.; Gioia, Gustavo; Tota, Vinay V. (Department of Theoretical and Applied Mechanics (UIUC), 2003-08)
    We show that the structure of a dense, free-surface boundary layer granular flow is similar to the structure of a laminar liquid flow: there is a strong component of order (stratification parallel to the mean flow) ...

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  • Raju, Renchi; Balachandar, S.; Hill, David F.; Adrian, Ronald J. (Department of Theoretical and Applied Mechanics (UIUC), 2003-08)
    We consider the question of scaling of flow within a stirred tank with increasing Reynolds number. Experimental results obtained from two different tanks of diameter 15.25 cm and 29.21 cm with a Rushton turbine operating ...

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  • Fried, Eliot; Sellers, Shaun (Department of Theoretical and Applied Mechanics (UIUC), 2003-09)
    The recently proposed neo-classical theory for nematic elastomers is a molecular-statistical generalization of classical Gaussian network theory. The resulting free-energy density predicts the phenomenon of soft elasticity—the ...

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  • Kasimov, Aslan R.; Stewart, D. Scott (Department of Theoretical and Applied Mechanics (UIUC), 2003-11)
    In this work we investigate the dynamics of self-sustained detonation waves that have an embedded information boundary such that the dynamics is influenced only by a finite region adjacent to the lead shock. We introduce ...

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  • Fried, Eliot; Roy, Bidhan C. (Department of Theoretical and Applied Mechanics (UIUC), 2003-11)
    We consider the question of whether a nematic elastomer cross-linked in an isotropic state and then subjected to an isochoric, homogenous deformation can exhibit a disclination. The theory that we use allows for the polymer ...

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  • Cermelli, Paolo; Fried, Eliot; Gurtin, Morton E. (Department of Theoretical and Applied Mechanics (UIUC), 2003-12)
    We derive a supplemental evolution equation for an interface between the nematic and isotropic phases of a liquid crystal when flow is neglected. Our approach is based on the notion of configurational force. As an application, ...

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  • Fried, Eliot; Gurtin, Morton E. (Department of Theoretical and Applied Mechanics (UIUC), 2003-12)
    (1) Introduction: some conditions for nonmaterial interfaces; (2) The need for a configurational force balance; (3) A framework for the study of evolving nonmaterial interfaces; (4) The normal configurational force balance ...

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