Methods of Calculating and Representing Rheological Properties, Using Data from the Parallel-Plate Plastometer

1946 ◽  
Vol 19 (2) ◽  
pp. 461-465
Author(s):  
J. R. Scott
Keyword(s):  
Rheological Properties ◽  
Parallel Plate ◽  
Tentative Method ◽  
Using Data

Abstract A tentative method is described for obtaining, from readings of the parallel-plate Williams plastometer, the fundamental flow relation of the material under test, and for representing this relation graphically in a manner that facilitates comparisons between different materials.

An Assessment of the Impact of Rheological Properties on Rate of Penetration Using Data Mining Techniques

2019 ◽  
Author(s):  
Abo Taleb T. Al-Hameedi ◽  
Husam H. Alkinani ◽  
Shari Dunn-Norman ◽  
Ralph E. Flori ◽  
Mortadha T. Alsaba ◽  
...  
Keyword(s):  
Data Mining ◽  
Rheological Properties ◽  
Rate Of Penetration ◽  
Data Mining Techniques ◽  
Using Data ◽  
The Impact

An Assessment of the Impact of Rheological Properties on Rate of Penetration Using Data Mining Techniques

2019 ◽  
Author(s):  
Abo Taleb T. Al-Hameedi ◽  
Husam H. Alkinani ◽  
Shari Dunn-Norman ◽  
Ralph E. Flori ◽  
Mortadha T. Alsaba ◽  
...  
Keyword(s):  
Data Mining ◽  
Rheological Properties ◽  
Rate Of Penetration ◽  
Data Mining Techniques ◽  
Using Data ◽  
The Impact

Rheological Properties and Microstructure of Hypereutectic Semi-Solid Al-Si-Mg Alloys Using Rheocasting Route

2012 ◽  
Vol 192-193 ◽  
pp. 323-328 ◽  
Author(s):  
Mehand Tebib ◽  
Frank Ajersch ◽  
X. Grant Chen
Keyword(s):  
Solid State ◽  
Rheological Properties ◽  
Parallel Plate ◽  
Fluid Model ◽  
Flow Behavior ◽  
Microstructural Study ◽  
Shear Rates ◽  
Solid Phases ◽  
Semi Solid ◽  
Liquid And Solid Phases

The SEED rheocasting process was used to produce semi-solid slurries of hypereutectic Al-17Si-4.5Cu (A390) and Al-15Si-10.5Mg-4Cu alloys respectively. The rheological properties of these alloys in the semi-solid state were characterized at different deformation rates and at variable solid fractions using the parallel plate compression viscometry. The viscosity at different shear rates was calculated using a Newtonian fluid model for increments of deformation during compression. Microstructures of both alloys, after partial solidification and compression, were examined in order to characterize the flow behavior during deformation. The comparison of the viscosity between the A390 and Al-15Si-10.5Mg-4Cu alloys indicated that the high Mg containing alloy possessed a higher viscosity for the range of shear rates and solid fractions investigated. Rheological results showed that at a given solid fraction, the viscosity of both alloys decreased significantly with increasing shear rates, indicating a shear thinning behavior. In addition, a separation of liquid and solid phases was also observed for both alloys in the microstructural study of compressed semi-solid billets.

scholarly journals Microstructure and Rheological Properties of Semi-Solid 7075 Slurries Using SEED Rheocasting Process

2016 ◽  
Vol 256 ◽  
pp. 288-293 ◽  
Author(s):  
Amir Bolouri ◽  
Qin Fu Zhao ◽  
Pascal Côté ◽  
X. Grant Chen
Keyword(s):  
Rheological Properties ◽  
Grain Refinement ◽  
Parallel Plate ◽  
Grain Morphology ◽  
Transient State ◽  
High Strength ◽  
Processing Parameters ◽  
Seed Processing ◽  
Semi Solid ◽  
The Impact

The SEED rheocasting process was used to produce semisolid slurries of high strength 7075 aluminum wrought alloys. The effects of the SEED processing parameters on the microstructure of semisolid slurries were studied. The impact of grain refinement on the grain morphology and size was investigated. The rheological properties of semisolid 7075 alloys were characterized at different solid fractions using a parallel plate compression viscometer. Results indicated that the grain refinement could greatly improve the globularity of α-Al grains and rheoformability. The relationships between viscosity and shear rate at different solid fractions in the transient state for both unrefined and refined semisolid slurries were evaluated and discussed.

Development of a Sliding Plate Rheometer to Measure the High Frequency Viscoelastic Properties of Polymer Melts

2007 ◽  
Vol 17 (6) ◽  
pp. 62563-1-62563-8
Author(s):  
Chelsea A. Braybrook ◽  
Jennifer A. Lee ◽  
Philip J. Bates ◽  
Marianna Kontopoulou
Keyword(s):  
Rheological Properties ◽  
High Frequency ◽  
Viscoelastic Properties ◽  
Parallel Plate ◽  
Polymer Melts ◽  
Measured Data ◽  
Rheological Models ◽  
Linear Viscoelastic ◽  
Good Agreement ◽  
Sliding Plate

Abstract A newly designed and constructed sliding plate rheometer is used to measure the high frequency (210 Hz) linear viscoelastic properties of two model polymers: polybutene (PB) and polydimethylsiloxane (PDMS). Using well-known rheological models, extrapolations of the viscoelastic measurements obtained on a rotational parallel plate rheometer to a frequency of 210 Hz are used to assess the performance of the high frequency sliding plate rheometer. Good agreement between the extrapolated and measured data demonstrates the ability of the sliding plate rheometer to measure the high frequency rheological properties of both Newtonian and shear-thinning materials.

A parallel-plate rheometer for the measurement of steady-state and transient rheological properties

1983 ◽  
Vol 22 (1) ◽  
pp. 81-89 ◽  
Author(s):  
T. Y. Liu ◽  
D. W. Mead ◽  
D. S. Soong ◽  
M. C. Williams
Keyword(s):  
Steady State ◽  
Rheological Properties ◽  
Parallel Plate

scholarly journals Excess acoustic absorption attributable to the biological modification of seawater viscosity

2008 ◽  
Vol 65 (9) ◽  
pp. 1747-1750 ◽  
Author(s):  
Christopher J. Rhodes
Keyword(s):  
Rheological Properties ◽  
Acoustic Measurement ◽  
Acoustic Absorption ◽  
Absorption Mechanism ◽  
Phaeocystis Globosa ◽  
Additional Absorption ◽  
Excess Viscosity ◽  
Absorption Component ◽  
Using Data ◽  
Biological Modification

Abstract Rhodes, C. J. 2008. Excess acoustic absorption attributable to the biological modification of seawater viscosity. – ICES Journal of Marine Science, 65: 1747–1750. There is increasing evidence that a ubiquitous species of oceanic phytoplankton (Phaeocystis globosa) can significantly modify the rheological properties of seawater. The effect is seasonal and, during spring when the species multiplies rapidly, one can observe large increases in the viscosity of the seawater they inhabit. One of the principal determinants of acoustic absorption in a fluid is viscosity, so in addition to the well-understood modulations attributable to temperature- and salinity-dependent molecular relaxation, there may be an additional absorption component resulting from the presence of phytoplankton. Using data from recent measurements of biologically induced excess viscosity during blooms of P. globosa, the additional acoustic absorption attributable to the presence of this organism is estimated. This suggests that a novel, biologically induced acoustic-absorption mechanism may be observable in seawater for frequencies >100 kHz. The implications for a variety of at-sea acoustic-measurement activities are noted.

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