Nowak Tomasz, Patalas Filip, Karolak Anna
Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
Materials (Basel). 2021 Apr 13;14(8):1941. doi: 10.3390/ma14081941.
The paper presents and discusses selected methods of wood classification and the evaluation of its mechanical properties. Attention was mainly paid to methods that may be particularly useful for examining existing elements and structures. The possibility of estimating the modulus of rupture-MOR and modulus of elasticity-MOE based on the non- destructive (NDT), semi-destructive (SDT), and destructive tests (DT) were considered. Known international, European, and American standards and research approaches were indicated. The selected testing methods and their interpretation were presented. These were, among others, the method of visual assessment, the resistance drilling method, methods of determining the dynamic modulus of elasticity, and procedures for testing small clear specimens. Moreover, some of our own research results from the conducted experimental tests were presented and discussed. In the destructive tests, both large elements and small clear specimens were examined. The results obtained from individual methods were compared and some conclusions were presented. The summary discusses the fundamental difficulties and limitations in applying the presented procedures and interpretations.
本文介绍并讨论了木材分类的选定方法及其力学性能评估。主要关注的是那些可能对检查现有构件和结构特别有用的方法。考虑了基于无损检测（NDT）、半破坏性检测（SDT）和破坏性试验（DT）来估算抗弯强度（MOR）和弹性模量（MOE）的可能性。指出了已知的国际、欧洲和美国标准以及研究方法。介绍了选定的测试方法及其解读。其中包括视觉评估方法、阻力钻孔法、测定动态弹性模量的方法以及测试小尺寸无缺陷试件的程序。此外，还展示并讨论了我们自己在进行的实验测试中获得的一些研究结果。在破坏性试验中，对大型构件和小尺寸无缺陷试件都进行了检测。比较了从各个方法获得的结果并给出了一些结论。总结部分讨论了应用所提出的程序和解读时的基本困难和局限性。
