Application: Paper and wood
Scientists at US Forest Service, Forest Products Laboratory, David Kretschmann and John Considine, are working with MatchID to develop analyses for examination of heterogeneous stiffness
in cellulose materials. Specifically, Kretschmann is using MatchID to differentiate earlywood and latewood stiffness from pith to bark and up and down the tree in Southern Pine.
Comparison of those stiffnesses in intensively managed and non-intensively managed forests will be used to guide lumber grading standards.
Eventually, Kretschmann hopes to suggest management practices which create high-value lumber.
Considine uses MatchID for identification of stiffness variation in structural paperboard, a material used in fiberboard containers. Stiffness is a critical property in this material because failure often occurs due to local buckling. MatchID’s expertise in appropriate DIC analysis and VFM have been an important aspect of this work. Quantification of stiffness variation is challenging in this paperboard because it can be caused by a variety of processing variables, including local fiber orientation, mass variation, dried-in stresses and a wide-range of fiber geometries and mechanical properties. Results of this work will be used to reduce and control stiffness variation.
"MatchID’s expertise in appropriate DIC analysis and VFM have been an important aspect of my work"
- John Considine, US Forest Service
For more info: Considine et al., Exp Mech 54 p.1395 (2014)