Force Tensiometry

Published: March 25, 2019 | Last updated: July 5, 2023

What Does Force Tensiometry Mean?

Force tensiometry is the measurement of surface and interfacial tension based on force measurements of the interaction of a probe. Tensiometer is designed to analyze the wettability of single fibers, even very thin fibers, by measuring their contact angle. Force tensiometry is particularly useful in development of fiber reinforced products such as pipes or liners to determine wettability and adhesion.

Incorporating force tensiometry tests in the early stage prevents production wastage and cost overruns.


Trenchlesspedia Explains Force Tensiometry

In force tensiometry, a probe is hung on a precise balance and brought into contact with the liquid interface to be tested. The probe will experience some forces as it interacts with the surface of the liquid, and can be used to calculate the surface tension. The force experienced will depend on the size and shape of the probe, contact angle and the surface tension. The contact angle is controlled by complete wetting such that it is zero by using probes having surfaces with high energy such as platinum-iridium alloy.

The probes are of two types: the Wilhelmy plate and Du Nouy ring.


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