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Rheology of Concentrated Sl ' Spensions of Fibers in Tube Flow : Ii . an Exploratory Study
| Content Provider | Semantic Scholar |
|---|---|
| Author | Maschmeyer, Richard |
| Copyright Year | 2014 |
| Abstract | The viscosities of concentrated suspensions of glass fibers in high viscosity silicone oil were measured with a capillary viscometer using 1A" and 1/8" diameter capillaries. The suspensions were mixed by a variety of techniques; the majority were mixed with an extruder. Suspension fiber length distributions and rheological properties were highly dependent on mixing technique. The viscosity of the suspensions was strongly dependent on fiber length distribution--a few percent of relatively long fibers in the distribution doubled or tripled the suspension viscosity. Special attention was paid to wall effects which complicate the interpretation of suspension viscosity data. Yield stresses, squeeze-through, the capillary entrance exclusion were observed; their magnitudes increased with fiber length and depended strongly on fiber length distribution. The variety of concentrated fiber suspension behavior reported in the literature is consistent with our observation that small differences in fiber length can cause large differences in suspension rheology. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://apps.dtic.mil/dtic/tr/fulltext/u2/a005776.pdf |
| Alternate Webpage(s) | http://www.dtic.mil/get-tr-doc/pdf?AD=ADA005776 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
