Schizolobium Parahyba var. Amazonicum Glulam Classified by Non-destructive Tests

ABSTRACT The objectives of this study were to evaluate the relationship between the density and the EW (modulus of elasticity) values obtained by two non-destructive methods: the accuracy of an expeditious method using a graduated ruler; and the homogenization of elasticity between the methods for glulam elements. In the analysis, displacements were measured with a graduated ruler and an automatic data acquisition system of 136 glulam pieces with corresponding structural size was used. The methods were evaluated by correlations, and the homogenization of elasticity was evaluated by the Tukey test. We found that density does not influence the EW values obtained by the studied methods, and it is concluded that an expeditious method using a graduated ruler can be used to determine EW by applying a corrected equation.

摘要
本研究旨在探究密度与两种无损检测方法所得EW（弹性模量，modulus of elasticity）值之间的关联，具体研究目标包括两方面：一是评估采用分度尺的快速检测方法的准确性；二是验证胶合木构件的两种检测方法间的弹性均一性。在本次分析中，针对136根符合结构尺寸要求的胶合木试件，采用分度尺与自动数据采集系统对其位移进行了测量。研究采用相关性分析对两种检测方法进行评价，并通过图基（Tukey）检验对弹性均一性展开评估。结果表明，密度对本研究所采用方法得到的EW值无影响；最终可得出结论：通过应用修正公式，可采用分度尺快速检测方法测定EW值。