Use of ram extruder as a combined rheo-tribometer to study the behaviour of high yield stress fluids at low strain rate

We propose in this work to provide an efficient and simple extruder device able to evaluate the rheological and tribological behaviour of high yield stress fluids, such as extrudible materials. An extruder able to measure simultaneously both the friction force acting on the extruder wall and the tot...

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Bibliographic Details
Published inRheologica acta Vol. 51; no. 8; pp. 743 - 754
Main Authors Perrot, Arnoud, Mélinge, Yannick, Rangeard, Damien, Micaelli, Francesca, Estellé, Patrice, Lanos, Christophe
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.08.2012
Springer
Springer Nature B.V
Springer Verlag
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Complex Fluids and Microfluidics
Computational fluid dynamics
Cross-disciplinary physics: materials science; rheology
Data analysis
Deformation; material flow
Engineering Sciences
Exact sciences and technology
Extrusion
Fluid dynamics
Food Science
Fundamental areas of phenomenology (including applications)
Kaolin
Materials Science
Mechanical Engineering
Mechanics
Mechanics of materials
Non-newtonian fluid flows
Original Contribution
Physics
Polymer Sciences
Rheological measurements
Rheological properties
Rheology
Rheometry
Soft and Granular Matter
Strain rate
Techniques and apparatus
Tribology
Viscoplasticity; yield stress
Yield strength
Yield stress
Extrusion
Rheology
Yield stress
Tribology
Measuring methods
Viscoplastic fluid
Experimental study
Rheometer
Rheological properties
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Summary:We propose in this work to provide an efficient and simple extruder device able to evaluate the rheological and tribological behaviour of high yield stress fluids, such as extrudible materials. An extruder able to measure simultaneously both the friction force acting on the extruder wall and the total extrusion force is developed. Based on previous studies, an efficient and accurate method of data analysis is then proposed and applied in order to obtain both a flow curve and a tribological law. Experimental tests are performed on soft modelling clay, kaolin paste and cement-based materials. Results are compared to conventional rheometry measurements. This comparison helps to evaluate the accuracy of the proposed experimental device and procedure.
ISSN:0035-4511
1435-1528
DOI:10.1007/s00397-012-0638-6