2007 Research Highlights-- USDA Forest Service Forest Products Laboratory

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2006 Highlights

o	How Well Do Arsenic-Free Preservatives Inhibit Copper-Tolerant Fungi?
o	Caulking with Care
o	Combustion Properties of an Exotic Annual Grass
o	Creosote Movement from Treated Wood Immersed in Fresh Water
o	Durable Wood, Naturally--Termite Resistance
o	Essential Oils Inhibit Mold Spore Germination
o	Fire Resistance of Strucutral Composite Lumber Products
o	Bioprocessing for Ethanol Production and a Valuable Adhesive Coproduct
o	Fuel Treatment Evaluator
o	Fuel Treatment Market
o	Genome Sequencing
o	Wood Research from World War I to Iraq
o	Reusing Remediated Wood in Value-Added Products
o	Inspecting Historic Structures: Using the Web to Train Inspection Professionals
o	Productive Use of Thinnings in Dimension Lumber and Paper
o	Treatability of Underutilized Wood Species
o	Enhancing Wood-Plastic Composites by Crosslinking Polymers
o	Accessible and Affordable Playground and Path Surfacing Now Commerically Available
o	Dimensional Warping of Wood-Based Composites

2007 Research Highlights

Research Area:
Forest Service Strategic Goal 6: Conduct mission-related work in addition to that which supports the agency goals.
SPA: Resource Management and Use

Imaging to determine stress concentration in paper under tensile loads

Key Contact: John Considine, jconsidine@fs.fed.us

The project uses optical imaging of paper under tensile loads to determine strain distribution in the paper prior to tensile failure. This research has used digital image correlation of one side images to track x-y strain in paper, and two side imaging to determine z-direction strain. Two conference proceedings published in FY-07 address z-direction strain, and use of an inverse method (strain) to determine stress concentration in paper test specimens.