手法を比較

	X線密度測定法	曲げ破壊強度および弾性率
分野	林学	林学
系統	Process / pipeline	Process / pipeline
提唱年	2005	1950
提唱者	Gabriel Gazo	ASTM International
種類	measurement method	mechanical test
原典	Hansmann, C., Wimmer, R., & Gindl, W. (2007). Assessing damage in wood-polymer composites by depth-sensing indentation. Composites Part A, 38(6), 1502–1508.	ASTM D143-19. (2019). Standard test methods for small clear specimens of timber. ASTM International.
別名	wood density, radiography	MOR, MOE, bending strength
関連	3	3
概要	X-ray densitometry is a nondestructive method for measuring wood density, microdensity profiles, and ring-by-ring density variation in wood samples using X-ray image analysis. The method uses attenuation of X-rays passing through wood to quantify mass per unit volume. It enables rapid assessment of wood quality without destroying material, making it valuable for research, timber grading, and genetic selection programs.	The Modulus of Rupture (MOR) and Modulus of Elasticity (MOE) are standardized measures of wood mechanical properties determined through static bending tests. MOR quantifies the maximum bending stress wood can withstand before failure; MOE measures stiffness (resistance to bending). These are fundamental properties used for wood grading, structural design, and assessment of wood quality and species suitability for applications requiring strength or stiffness.