What would it do?
In a nut shell, it would completely characterise the measured paper sheet (in terms of its elastic properties and engineering parameters) in a few seconds. In the same time it would estimate important strength properties like bending stiffness, ring crush, SCT, tensile strength, orientation angle and effective (structural) thickness and report them.
What would it be used for?
In its simplest form it would replace a number of physical test room tests like ring crush. Imagine obtaining md and cd ring crush tests in a few seconds (also many other tests, without cutting the paper and all on the same piece of paper) [Fig 14]. For a given furnish recipe (the furnish type could be entered) the test is as good as the test room.
More interestingly, the fundamental engineering stiffness or compliance will give insight into the operating state of the paper machine – showing how are the fibres aligned, into or out of the paper, levels of bonding in different directions, shear stiffness believed to be highly related to delamination and out-of-plane stiffness that relate to zd tensile and scott plybond tests. The overall “goodness” of the fibre furnish being used. Shrinkage and strain of the sheet during manufacture – with the Poisson ratios of the sheet. Fast cross machine performance profiling and setup.