Ramirez-Avila, John J.
Freyne, Seamus F.
Date of Degree
Graduate Thesis - Open Access
Master of Science
College of Forest Resources
Department of Sustainable Bioproducts
Wood crossarms provide an efficient economical, structural, and sustainable solution to the distribution and transmission of electric utilities. The majority of these crossarms are made from two species of wood, Douglasir (Pseudotsuga menziesii) and southern pine (Pinus spp.). In this study 210 solid-sawn wood crossarms (120 pieces of Douglasir/ 90 pieces of southern pine) were evaluated with non-destructive (NDTs) and destructive testing to determine if NDT could be used to predict crossarm performance. Three NDTs were conducted. Subsequently, destructive testing in which each specimen was broken in accordance to ASTM D-198 for modulus of elasticity (MOE) and modulus of rupture (MOR) was performed. After testing each specimen the non-destructive data was compared to the destructive testing results by mean comparisons and correlations. In this study it was found that the E-computer (NDT) produced the strongest correlation in both species to destructive values, especially MOE.
Catchot, Tyler Russell, "Relationships Between Non-Destructive Tests, Breaking Strength, and Stiffness of Wood Crossarms" (2015). Theses and Dissertations MSU. 3773.