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The effects of the moisture content of laminated veneer lumber on bending strength and deformation determination via two-dimensional digital image correlation
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science ( IF 2 ) Pub Date : 2021-01-24 , DOI: 10.1177/0954406220986181
Eser Sözen 1 , Kadir Kayahan 2 , Timuçin Bardak 2 , Selahattin Bardak 3
Affiliation  

This study determined the bending strength values of laminated veneer lumber (LVL) made with beech (Fagus orientalis L.) veneer obtained by the peeling process and having four different moisture content values (0%/oven dry, 12%, 18%, and 25%). Bending tests were carried out in two different ways, i.e., for the flatwise and edgewise aspects of the LVL. Strain maps were created using two-dimensional digital image correlation (2 D DIC) and the samples having different moisture contents were compared. At the same time, the amount of displacement of the samples during the bending test was determined via conventional and DIC methods. Results of the study determined that the moisture content was effective in bending strength and tension zones. It was observed that increasing moisture content created homogeneous distribution of deformation. It was also observed that the data obtained by the 2 D DIC method were compatible with those obtained by the conventional method.



中文翻译:

层压单板木材含水量对弯曲强度和变形的影响(通过二维数字图像相关性确定)

这项研究确定了山毛榉(Fagus Orientalis)制成的层压单板木材(LVL)的抗弯强度值L.)单板是通过剥离工艺获得的,具有四个不同的水分含量值(0%/干燥的烤箱,12%,18%和25%)。弯曲测试以两种不同的方式进行,即针对LVL的平面和边缘方面。使用二维数字图像相关性(2 D DIC)创建应变图,并比较水分含量不同的样品。同时,通过常规和DIC方法确定弯曲试验期间样品的位移量。研究结果确定水分含量在弯曲强度和张力区域有效。观察到增加的水分含量产生变形的均匀分布。还观察到,通过2 D DIC方法获得的数据与通过常规方法获得的数据兼容。

更新日期:2021-01-25
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