• Degradation in Parallel-Disk Rheometry 

      Giacomin, A. Jeffrey; Pasquino, R.; Saengow, Chaimongkol; Gilbert, Peter H. (2018-08)
      We analyze quantitatively the oxidative degradation of a sample in a parallel-disk rheometer, as oxygen diffuses inward, radially, from the free boundary. We examine rheometer error mitigation by means of nitrogen blanketing, ...
    • Startup Steady Shear Flow from the Oldroyd 8-Constant Framework 

      Saengow, Chaimongkol; Giacomin, A. Jeffrey; Grizutti, Nino; Pasquino, R. (2019-01)
      One good way to explore fluid microstructure, experimentally, is to suddenly subject the fluid to a large steady shearing deformation, and to then observe the evolving stress response. If the steady shear rate is high ...