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16th April 2017
Tommi Borg visits for your meetings at Chinaplas May 16-19, 2017 - Guangzhou, PR China.

24th November 2015
New published paper "Linear viscoelastic model for different flows based on control theory", Appl. Rheol. Read more >>

7th November 2014
RheoPower 4.3 is also available as true 64-bit for heavy computations. Read more >>

20th August 2014
Tommi Borg gives an oral presentation at The International Conference on Polyolefin Characterization (ICPC) September 21-24, 2014 - Valencia, Spain. >>

30th October 2013
New RheoPower 4.2 produce accurate MWD by Multi-Record Analyze. Read more >>

Research Papers

Type of manuscripts

This page presents a summary of research papers which have been published or presented at international conferences.

When applicable, the paper or abstract is available for download in *.pdf format.

R&D fresh published papers for for modelling viscoelasticity, detecting MWD from viscosity measurements and CFD simulations:

Orally presented papers:

This is a good review for research developments in theory during years along with heavy software coding and numerical breaking.

The origin of Classical Rheology

The fundamental presentation for modern rheology is discussed by Malkin and Isayev*: “The complete review of the theory of linear viscoelasticity was summarized Bernhard Gross: Mathematical structure of the theories of viscoelasticity, Hermann & Cie, Paris (1953).

He called his approach ”dogmatic” because it was based on some fundamental principles and it appeared possible to present the theory in a compact and clear form.”
* A Ya. Malkin, A. I. Isayev: Rheology: Concepts, Methods & Applications, ChemTec Publishing, Toronto, 2006.
Gross noticed that the formalism of dielectric and viscoelastic relaxations are identical. He wrote a rheologial book discussed above. We proved now on these pages that macromolecules do not behave exatly similar way as classical dielectric phenomena.

High valuated Ferry, Tschoegl and others had only done continuum of “dogmatic” works for the review by Gross. Who was this forgotten great scientist Bernhard Gross?

I bought the last single book recently available (found from the past Aerojet library, Sacramento, California Space rocket manufacturer). Due to immaterial rights I copy only few pages found attached as a sample of book: "Mathematical structure of the theories of viscoelasticity"

As a summary our works based on control theory are as “dogmatic” as classical presented earlier by Gross.

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