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How to measure and analyse the texture of food, cosmetics, pharmaceuticals and adhesives.

Tuesday 9 October 2018

Compression Testing using a Texture Analyser – Calculating Fundamental Parameters

Squeezing sponges
Compression testing involves a self-supporting sample being compressed under a flat probe large enough to cover the whole sample. 

The loading arm (attached to the probe) moves down at a constant speed to deform the sample, first deforming it elastically then plastically (if it is not completely brittle). If the force required to break the sample is within the limit of the load cell, fracture may occur. However, this is not always the case in compression as many samples are stronger (or tougher) in compression than in tension, especially ceramic samples.