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| X射线密度测定法× | 弯曲强度和弹性模量× | |
|---|---|---|
| 领域 | 林学 | 林学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 2005 | 1950 |
| 提出者≠ | Gabriel Gazo | ASTM International |
| 类型≠ | measurement method | mechanical test |
| 开创性文献≠ | Hansmann, C., Wimmer, R., & Gindl, W. (2007). Assessing damage in wood-polymer composites by depth-sensing indentation. Composites Part A, 38(6), 1502–1508. link ↗ | ASTM D143-19. (2019). Standard test methods for small clear specimens of timber. ASTM International. link ↗ |
| 别名≠ | wood density, radiography | MOR, MOE, bending strength |
| 相关 | 3 | 3 |
| 摘要≠ | 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. |
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