NEWS : New DETA application note
Ageing these leather samples influences the electrical conductivity and the mechanical rate of extension under controlled humidity environments. The ageing causes structural breakdown which results in fibre shrinkage which reduces mobility as would be expected in a tighter structure. This is borne out by both the decrease in the rate of mechanical extension as a function of RH (and moisture content) and also the decreased conductivity seen in DETA measurements.
Members of the UK Thermal Methods Group have updated the original version of this text which is useful to both novices and experienced users alike.