A control scheme for filament stretching rheometers with application to polymer melts

José Manuel Román Marín; Jakob Kjøbsted Huusom; Nicolas Javier Alvarez; Qian Huang; Henrik K. Rasmussen; Anders Bach; Anne Ladegaard Skov; Ole Hassager

doi:10.1016/j.jnnfm.2012.10.007

A control scheme for filament stretching rheometers with application to polymer melts

José Manuel Román Marín, Jakob Kjøbsted Huusom, Nicolas Javier Alvarez, Qian Huang, Henrik K. Rasmussen, Anders Bach, Anne Ladegaard Skov, Ole Hassager

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We propose a new control scheme to maintain a constant strain rate of the
mid-filament diameter in a filament stretching rheometer for polymer melts.
The scheme is cast as a velocity algorithm and consists of a feed-back and
a feed-forward contribution. The performance of the controller is demonstrated
on a commercial low density polyethylene. Several strain rates and
experimental conditions are tested to demonstrate the necessity of the control
parameters and the limits of both the control scheme and the experimental
apparatus. When the control parameters are properly tuned, the algorithm
ensures that the applied strain stays within 2% of the set point and measurements
can be made up to Hencky strains of 6.5.

Original language	English
Journal	Journal of Non-Newtonian Fluid Mechanics
Volume	194
Pages (from-to)	14-22
ISSN	0377-0257
DOIs	https://doi.org/10.1016/j.jnnfm.2012.10.007
Publication status	Published - 2013

Keywords

Filament stretching rheometer
Extensional rheometry
Feed-back and feed-forward control
Low-density polyethylene

Access to Document

10.1016/j.jnnfm.2012.10.007

Fingerprint Dive into the research topics of 'A control scheme for filament stretching rheometers with application to polymer melts'. Together they form a unique fingerprint.

Cite this

@article{aee4b300c6764048a5b8e882ffffe575,

title = "A control scheme for filament stretching rheometers with application to polymer melts",

abstract = "We propose a new control scheme to maintain a constant strain rate of themid-filament diameter in a filament stretching rheometer for polymer melts.The scheme is cast as a velocity algorithm and consists of a feed-back anda feed-forward contribution. The performance of the controller is demonstratedon a commercial low density polyethylene. Several strain rates andexperimental conditions are tested to demonstrate the necessity of the controlparameters and the limits of both the control scheme and the experimentalapparatus. When the control parameters are properly tuned, the algorithmensures that the applied strain stays within 2% of the set point and measurementscan be made up to Hencky strains of 6.5.",

keywords = "Filament stretching rheometer, Extensional rheometry, Feed-back and feed-forward control, Low-density polyethylene",

author = "{Rom{\'a}n Mar{\'i}n}, {Jos{\'e} Manuel} and Huusom, {Jakob Kj{\o}bsted} and {Javier Alvarez}, Nicolas and Qian Huang and Rasmussen, {Henrik K.} and Anders Bach and Skov, {Anne Ladegaard} and Ole Hassager",

year = "2013",

doi = "10.1016/j.jnnfm.2012.10.007",

language = "English",

volume = "194",

pages = "14--22",

journal = "Journal of Non-Newtonian Fluid Mechanics",

issn = "0377-0257",

publisher = "Elsevier",

}

A control scheme for filament stretching rheometers with application to polymer melts. / Román Marín, José Manuel; Huusom, Jakob Kjøbsted; Javier Alvarez, Nicolas; Huang, Qian; Rasmussen, Henrik K.; Bach, Anders; Skov, Anne Ladegaard ; Hassager, Ole.

In: Journal of Non-Newtonian Fluid Mechanics, Vol. 194, 2013, p. 14-22.

Research output: Contribution to journal › Journal article › Research › peer-review

TY - JOUR

T1 - A control scheme for filament stretching rheometers with application to polymer melts

AU - Román Marín, José Manuel

AU - Huusom, Jakob Kjøbsted

AU - Javier Alvarez, Nicolas

AU - Huang, Qian

AU - Rasmussen, Henrik K.

AU - Bach, Anders

AU - Skov, Anne Ladegaard

AU - Hassager, Ole

PY - 2013

Y1 - 2013

N2 - We propose a new control scheme to maintain a constant strain rate of themid-filament diameter in a filament stretching rheometer for polymer melts.The scheme is cast as a velocity algorithm and consists of a feed-back anda feed-forward contribution. The performance of the controller is demonstratedon a commercial low density polyethylene. Several strain rates andexperimental conditions are tested to demonstrate the necessity of the controlparameters and the limits of both the control scheme and the experimentalapparatus. When the control parameters are properly tuned, the algorithmensures that the applied strain stays within 2% of the set point and measurementscan be made up to Hencky strains of 6.5.

AB - We propose a new control scheme to maintain a constant strain rate of themid-filament diameter in a filament stretching rheometer for polymer melts.The scheme is cast as a velocity algorithm and consists of a feed-back anda feed-forward contribution. The performance of the controller is demonstratedon a commercial low density polyethylene. Several strain rates andexperimental conditions are tested to demonstrate the necessity of the controlparameters and the limits of both the control scheme and the experimentalapparatus. When the control parameters are properly tuned, the algorithmensures that the applied strain stays within 2% of the set point and measurementscan be made up to Hencky strains of 6.5.

KW - Filament stretching rheometer

KW - Extensional rheometry

KW - Feed-back and feed-forward control

KW - Low-density polyethylene

U2 - 10.1016/j.jnnfm.2012.10.007

DO - 10.1016/j.jnnfm.2012.10.007

M3 - Journal article

VL - 194

SP - 14

EP - 22

JO - Journal of Non-Newtonian Fluid Mechanics

JF - Journal of Non-Newtonian Fluid Mechanics

SN - 0377-0257

ER -