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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


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Title: Relationship between stress wave transmission time and bending strength of deteriorated oriented strandboard

Source: Forest Prod. J. 53(3):33-35.

Author(s)Ross, Yang, Illman, Nelson

Publication Year: 2003  View PDF »

Category: Journal Articles

Abstract: Stress wave nondestructive evaluation (NDE) technologies are used in the inspec-properties of wood-based materials. tion of timber structures and frequently complement visual inspection procedures. In-A limited number of studies that fospectors use stress wave NDE techniques to locate internal voids anddecayed or deteri-cused on prediction of residual strength orated areas in large timbers. Although those techniques have proven useful in have been completed. Aggour (1989), inspections, no information exists concerning the relationship between stress wave Pellerin et al. (19851, and Ross et al. transmission time and important residual strength properties of oriented strandboard (2001,1997) used stress wave techniques (OSB) that has been exposed to decay fungi. We examined the relationship between to assess the residual strength of piles, stress wave transmissiontime andbending strength of OSB subjected to brown-rot de-small clear specimens, and timbers. cay fungi. Stress wave transmission time was measured on small OSB specimens that Based on the encouraging results hadbeenexposed to brown-rot decayfungi for up to 11 weeks. Static bending tests were from these studies and the potential use then performed on the specimens. A strong relationship was observed between stress of stress wave NDE for inspection of wave transmission time and residual bending strength.

File size: 148 kb(s)

Date posted: 04/05/2010
Current FPL Scientists associated with this product (listed alphabetically)
Illman, Barbara L.
Supervisory Plant Pathologist
Ross, Robert J.
Supervisory Research Gen. Engineer

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