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LATEST NEWS

12th January 2026
Updated RheoPower 5.2 package is now available. Outputs and scales are aligned with the book. Read more >>

1st December 2025
Recycling is popular today, but 50 years ago it was our core business — and it taught us the behaviour of polymers.

10th November 2025
ICPC, Shanghai, China Tommi Borg: “Structure and Viscoelastic Properties of Polyethylene by Control Theory”

10th March 2025
New book by Tommi Borg, Control Theory in Rheology, Springer International Publishing. Read more >>

16th April 2022
Tommi Borg visits for your meetings at AERC 2022, in Seville, Spain, 26th-28th April 2022.

14th November 2019
Updated RheoPower 5.1 package is now available. Read more >>

24th September 2018
64-bit RheoPower 5.0 analyses still more accurate thanks to developments. Easy to deploy databases. Read more >>

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

SHPB

SHPB (Split Hopkinson Pressure Bar)

SHPB is data analyzing software for outputs of the special SHPB instrument. The software has been developed originally for Prof. Pääkkönen's exciting research work. In this Hopkinson project it was discovered the that modulus of polymer is about three times higher during the first 0-50 micro seconds at high >1000/s shear rate. With this software and new principle it has been possible to compute for the first time moduls results for these very short time sonar deformations (t<0.0001s).

Traditional and well-known Split-Hopkinson-Pressure-Bar (SHPB) method, which is widely used for dynamic materials testing at very high strain rates up to the order of 103/s. This intelligent principle is used for rocks, aluminum etc., but now it gives us a new understanding of polymers.

SHPB-Software looks as RheoDeveloper program. If you are interested, please contact us. You find here our Contact Information. New information of structure with a small start-up time at a high rate.

Development State

For delievery is needed some coding and tuning for data exchange between your device and software.



















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