Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: ON FRACTURE-RELATED CAUSES FOR REDUCTION IN TENSILE STRENGTH OF SOUTHERN PINE LUMBER AT LOW MOISTURE CONTENT

Source: Wood and Fiber Science, 35(1), 2003. pp. 90-101

Author(s)Green, Cramer, Kretschmann

Publication Year: 2003  View PDF »

Category: Journal Articles

Abstract: A combination of lumber testing and finite element-fracturemechanics simulation was used to determine the influence of moisture content on the tensile strength of southern pine dimension lumber. This research confirmed that tensile strength degrades as equilibrium moisture content drops below 12%. The simulations allowed tracking of the individual influence of different clear wood properties on the tensile strength of lumber specimens. The finite element results suggest that lumber containing knots more closely approaches idealized linear elastic behavior as the wood becomes extremely dry. For green lumber, the model appears to be overly conservative, possibly because stress concentrations are reduced by inelastic response perpendicular to the grain.

Keywords: Tensile strength, lumber, moisture content, computer simulation.

File size: 364 kb(s)

Date posted: 04/05/2010
Current FPL Scientist associated with this product
Kretschmann, David E.
Research General Engineer
  

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »


Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »


Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


Nanotechnology

A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »


Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »