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

Column compression of paperboard tubes

Key Contact: Tom Urbanik, turbanik@fs.fed.us
Partners: Welch Allyn Inc and Sonoco Products Co.

Tubular packaging forms fabricated and shaped from rolled paper are used as reinforcing corner posts for major appliances packaged in corrugated containers. Tests of column compression strength simulate the expected performance loads from appliances stacked in warehouses. Column strength depends on tube geometry, paper properties, basis weight, and number of laminations. A column strength model considers the tube geometry to be a sequence of geometric flat and arched segments with each segment apt to fail by either buckling or compression. Contributions of segments to strength depend on respective failure modes and are appropriately summed. The principles of our derived model provide insight into the optimum paper properties and number of laminations in the selection and design of tubular posts.