Comparing wire-mesh sensor with neutron radiography for measurement of liquid fraction in foam

Research output: Contribution to journalResearch articleContributedpeer-review


The liquid fraction of foam is an important quantity in engineering process control and essential to interpret foam rheology. Established measurement tools for the liquid fraction of foam, such as optical measurement or radiography techniques as well as weighing the foam, are mostly laboratory-based, whereas conductivity-based measurements are limited to the global measurement without detailed spatial information of liquid fraction. In this work, which combines both types of measurement techniques, the conductivity-based wire-mesh sensor is compared with neutron radiography. We found a linear dependency between the liquid fraction of the foam and the wire-mesh readings with a statistical deviation less than 15%. However, the wire-mesh sensor systematically overestimates the liquid fraction, which we attribute to liquid bridge formation between the wires.


Original languageEnglish
Article number015101
JournalJournal of Physics: Condensed Matter
Issue number1
Publication statusPublished - 11 Jan 2023

External IDs

Scopus 85141893107
WOS 000882149200001
Mendeley 69ff5719-dad8-3a48-a578-ee2caf798b6d


DFG Classification of Subject Areas according to Review Boards


  • Foam, Liquid fraction, Neutron radiography, Wire-mesh sensor