End-force distributions during bending of Eucalyptus regnans

Abstract

Variation in end-force across the thickness of Eucalyptus regnans bending specimens has been measured using a novel differential-end-force-sensor, purpose designed and built with three sensors to detect force near the surfaces and the neutral axis of the specimen. Two experiments were conducted that showed that the type of end-restraint does affect the distribution of end-force relative to the thickness of the wood specimen. This differential-end-force approach has the potential to improve the performance of the wood bending process, in particular in semi-automated production settings where excessive compressive end-forces could result in the failure of bent wood components with associated production delays and losses.