Why Does Pouring Method Change Bulk Density?
Loose bulk density depends on how powder enters [...]
Why Does Tapped Density Change With Fill Mass?
Increasing fill mass can raise or lower measured [...]
PBF Powder Flowability Testing: Why Different Methods Disagree and What the Results Mean
Hausner ratio, shear cell, and dynamic flow energy results on the same PBF powder lot rarely agree exactly. That disagreement is a decision input, not proof that a method or lab got it wrong.
Real-Time Powder Flow Imaging: What LED-Based Particle Image Velocimetry Adds Beyond Static Flowability Tests GalleryReal-Time Powder Flow Imaging: What LED-Based Particle Image Velocimetry Adds Beyond Static Flowability Tests
Analytical Techniques and Methods, Bulk Solids Characterization, Flowability, Insights, Mixing technology, Pharmaceutical Industry
Real-Time Powder Flow Imaging: What LED-Based Particle Image Velocimetry Adds Beyond Static Flowability Tests
LED-based particle image velocimetry (PIV) images the velocity field inside a moving powder bed during blending, adding spatial resolution that static angle of repose, Hausner ratio, and shear cell tests cannot provide. Here is what that resolution can and cannot support for a process decision.
Dynamic and Aerated Powder Testing: What Flow Energy Adds Beyond the Shear Cell and Hausner Ratio
Dynamic and aerated powder testing measures basic flow energy and specific energy to fill the gap between shear cell consolidation data and Hausner ratio screening, particularly for fluidized processing and rapid-refill feeding.
Hausner Ratio and Carr Index: What the Numbers Tell You and Where They Break Down
Both the Hausner Ratio and Carr Index reduce bulk and tapped density to a single number. The mechanism behind that number, whether aeration, particle shape, or surface cohesion, determines whether it supports a process decision or actively misleads one.
Screw Feeder Dosing Accuracy and Powder Compressibility: Why the Same Screw Behaves Differently on Similar Products
The same screw feeder at the same speed can deliver consistently on one powder and drift by several percent on another. The difference lies in compressibility, wall friction, and cohesion, and in how bulk density shifts as the hopper empties.
Calcium Carbonate Powder in Polypropylene: Dust Suppression and Dosing Errors
Dust suppression oil can reduce airborne calcium carbonate [...]
Powder Flowability: Factors and Measurement Techniques
Powder flowability is not one fixed property. A [...]
The Ultimate Guide to Powder Flow and Flowability Testing
Powder flowability is critical to efficiency, quality, and [...]
