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Flexible rheometers.


RS1 and RS300 rheometers are said to provide enhanced flexibility and control over rheological rhe·ol·o·gy  
n.
The study of the deformation and flow of matter.



rheo·log
 tests. RS1 rheometers are designed for exceptional performance and value, according to according to
prep.
1. As stated or indicated by; on the authority of: according to historians.

2. In keeping with: according to instructions.

3.
 the company. They offer flow curve measurements with defined shear rate Shear rate is a measure of the rate of shear deformation:



For the simple shear case, it is just a gradient of velocity in a flowing material.
 or shear stress shear stress
n.
See shear.



shear stress

A form of stress that subjects an object to which force is applied to skew, tending to cause shear strain.
, as well as dynamic measurements (oscillation) for the determination of elasticity. Yield points can be determined with creep/ recovery tests or with stress-controlled ramps. Reactions can be followed by time curves or temperature curves at constant shear rate, shear stress or frequency. Making RS1 rheometers easy to use is SnapShot software that tells the user in a single mn the best measurement method for any given sample. For more demanding applications, the RS300 modular research rheometer rhe·om·e·ter
n.
An instrument for measuring the flow of viscous liquids, such as blood.
 offers all the features of the RS1, including SnapShot software, with additional features designed to extend control, such as a vector-controlled motor that permits high dynamic response in transient tests. The RS300 is said to enhance flexibility by providing an extremely wide torque range, increasing sensitivity to low viscosity fluids. (Thermo Haake)

Circle 105 on card
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Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Publication:Rubber World
Date:Mar 1, 2001
Words:172
Previous Article:Silicone rubber extruders.
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