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

Tuesday 10 December 2019

Texture Analysis in Action: Vickers and Shore Hardness Probe

Vickers Hardness Probes
Vickers testing has been a very widely-used technique for many materials for decades due to simple data analysis and test preparation. 

Many applications demand a tip made from a very hard material such as diamond or sapphire, as the indenter must be significantly harder than the material under investigation. However, stainless steel is suitable for testing many softer materials such as tablets, soap, fruit and vegetables, cheese, chocolate and some polymers.

Traditionally, Vickers hardness is calculated by inputting the indentation diagonals into a standard formula. However, instrumented indentation on a Texture Analyser allows automatic hardness analysis without the use of a microscope. It also enables other parameters such as stress relaxation and elastic-plastic energy ratios to be calculated.