“…The CTE value in longitudinal direction is very small, ranging from 5-10 times less than that of transverse direction, and therefore, it is not often considered (Glass and Zelinka, 2010), while that in the radial direction is slightly less than that in the tangential direction (Zhao et al, 2016). In addition, dilatometry is a technique that estimate the thermal expansion of different materials in order to obtain the coefficients of linear thermal expansion at different temperatures (Okaji, 1988;Evans, 1999); consequently, the thermal expansion value for different woods has been studied with this technique (Kubler et al, 1973;Zeriouh and Belkbir, 1996;Pizzo et al, 2002;Miki et al, 2014;Zhao et al, 2016).…”