Nondestructive Evaluation of 2 by 10 Southern Pine Lumber
Abstract
Abstract Efficient use of the available wood resources is necessary to sustainably meet the long-term demand for wood products. This paper presents research about the potential of using transverse and longitudinal vibration techniques to evaluate the bending modulus of elasticity MOE (E b ) and tensile properties (E t and UTS) of 2 by 10 No. 2 grade southern pine ( Pinus spp.) lumber. A total of 285 lumber pieces were first nondestructively tested using longitudinal vibration (Director HM 200), transverse vibration (Metriguard E-computer), and proof-loading bending tests (Universal Instron Machine). Each specimen was then destructively tested in tension parallel to the grain to determine tension modulus of elasticity (E t ) and ultimate tensile stress (UTS). Correlations between growth characteristics, physical, and mechanical properties were analyzed. Excellent correlative relationships between longitudinal and transverse dMOE with the elastic properties E b , and E t were found. A strong correlation was also found between the elastic properties E b and E t . The prediction of E b was improved after adding density to the model. The estimation of UTS was also improved with the addition of density and a secondary nondestructive measurement. Nondestructive techniques are recommended to assess the mechanical properties of southern pine 2 by 10 lumber.
Reference
M. G. C. Uzcategui; F. J. N. França; R. D. Seale; C. A. Senalik; R. J. Ross. (2023). Nondestructive Evaluation of 2 by 10 Southern Pine Lumber. Forest Products Journal. https://doi.org/10.13073/fpj-d-22-00054
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