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Title: Nondestructive evaluation of the tensile properties of structural lumber from the spruce-pine-fir species grouping: relationship between modulus of elasticity and ultimate tension stress

Source: Res. Note FPL-RN-0383. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 14 p.

Author(s)As, Nusret ; Senalik, C. Adam; Ross, Robert J.; Wang, Xiping ; Farber, Benjamin

Publication Year: 2020  View PDF »

Category: Research Notes
Associated Research Project(s):   FPL-4714-1B

Abstract: AbstractThe study summarized in this research note was conducted to examine the relationships between nondestructive evaluation (NDE) parameters, tensile modulus of elasticity (MOE), and strength of spruce–pine–fir structural lumber. Samples were procured from a local lumber yard using a random selection process and were conditioned at the USDA Forest Service, Forest Products Laboratory, to 10% equilibrium moisture content. Static bending and vibration (transverse and longitudinal) nondestructive tests were conducted on each specimen and MOE was calculated. The relationship between static and dynamic modulus values was examined, and empirical models were developed using statistical regression analysis techniques. Results revealed excellent correlative relationships among MOE values. Coefficients of determination obtained were 0.92, 0.96, and 0.93 for MOE of static transverse vibration, MOE of static longitudinal vibration, and MOE of longitudinal transverse vibration, respectively. Correlative relationships were also observed between NDE parameters and tensile strength. Coefficients of determination were similar to those observed for strength predication models developed for other species.

Keywords: Nondestructive evaluation; modulus of elasticity; spruce–pine–fir lumber; tension; strength

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 2,048 kb(s)

Date posted: 09/24/2020

This publication is also viewable on Treesearch:  view
RITS Product ID: 99443
Current FPL Scientists associated with this product (listed alphabetically)
Ross, Robert J.
Supervisory Research Gen. Engineer
Senalik, Christopher
Research General Engineer
Wang, Xiping
Research Forest Products Technologist

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