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The burst testing, a quick, cheap and performing test
 05 Fév 2014

Celabor recently acquired a new burst tester in order to measure the resistance of flat materials like papers, nonwovens and fabrics.
This fully computerised device allows to determine in one single operation the multidirectional tensile strength of the material. This one, submitted to a "swelling" effect under a growing pressure, is able to resist until the moment when it "burts", and the pressure reached at that moment is an important characteristic of this material.
 
If the fabric-type materials generally burst in a clearly detectable way, it is not the case with the numerous nonwovens used in all kinds of applications, like by instance the disposable clothes and accessories used in the operating rooms. Those materials often tear progressively, and it is not always possible for the device to detect the moment when the material loses its strength properties. Moreover those  materials are generally less homogeneous than a fabric.
 
The new device allows to examine the curves of variation of the pressure and the distension (swelling height) of the material and to interpret at best the behaviour of the material.
 
Below is an example showing the curves of the pressure for 5 repetitions of a same test.




 
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