Uniaxial Powder Tester

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Description

Freeman Technology

The Uniaxial Powder Tester (UPT) is a stand-alone uniaxial shear tester for simple, sensitive and cost effective powder characterisation. The instrument delivers repeatable and reliable measurements, providing a robust alternative to traditional powder testing techniques. Uniaxial testing first involves the construction of a consolidated powder column. This is then removed from its confining sleeve before being fractured through the application of a vertical stress, directly measuring the uniaxial Unconfined Yield Strength (uUYS). This technique can therefore be used to assess and rank powder flowability. Cohesive powders have relatively strong inter-particular forces, which encourage the particles to bond together rather than moving easily relative to one another. By contrast, in non-cohesive powders, the tensile forces between particles tend to be much weaker. Uniaxial powder testing is a direct and reliable method for measuring the uUYS and Flow Function of powders.

Key Differences

Benefits of the Uniaxial Powder Tester:

• Direct uUYS (σc) and Flow Function (FF) measurements

• Fast

• Repeatable

• Low Cost

• Versatile

• Easy to use

• Intuitive, easy to interpret results

• Robust

• Bespoke software 

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Technical Specification

The UPT's level of automation and low operator input means the instrument delivers highly repeatable data. 

• Uniaxial Consolidation Stress Range: 0-100kPa

• Normal stress - resolution : 0/3 Pa

• Double ended consolidation : +

• Uniaxial unconfined yield strength (uUYS) - measurement: +

• Real time stress display/ Piston position display: +

• Sample mass- measurement: +

• Compressibility(%): +

• Height / Diameter ratio of consolidated sample: 1.25-1.5

• Data logging:+

• Data export: +

• Report generation: +

• Instrument Dimensions: 310x321x647mm

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