| Autor: |
Diañez Isabel, Martínez Inmaculada, Jerez Abel, Franco José M. |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Applied Rheology, Vol 34, Iss 1, Pp 140569-85 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1617-8106 |
| DOI: |
10.1515/arh-2024-0021 |
| Popis: |
This article describes the design and testing of a low-cost automatic rolling-ball viscometer. The device has been manufactured from three-dimensional printed parts and conventional and affordable mechanical and electronic components. It is controlled by an Arduino MEGA with a custom code that includes manual and automatic measuring modes. Both the type of viscometer and the models used are, in principle, valid for Newtonian and power-law fluids. However, measurement and calculation procedures have been developed that also makes it possible to determine the viscosity of Herschel–Bulkley fluids that might exhibit a yield stress behaviour within the range studied. By these procedures, viscosity values have been obtained for model fluids – Newtonian, power-law, and Herschel–Bulkley fluids – and compared to those obtained with a commercial rotational rheometer. The proposed setup and measuring method have thus proven to provide very reasonably accurate viscosity values for a low-cost device. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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