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首页> 外文期刊>Pro Ligno >ELASTIC CONSTANTS OF MDF CORE AND FACE LAYERS DETERMINED BY COMPRESSION TESTS
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ELASTIC CONSTANTS OF MDF CORE AND FACE LAYERS DETERMINED BY COMPRESSION TESTS

机译：用压缩试验测定中密度纤维板核心和表面层的弹性常数

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Elastic constants of MDF core and face layers were assessed by compression tests under constant humidity conditions (21oC and % 65 RH). Three Young’s modulus, three shear modulus and six Poisson ratios were determined. Whole MDF panels (1880x3660mm) were strip to face and core layers using table saw. The cores and faces were glued together in order to achieve homogenous material properties. 20x20x60mm samples were cut in principal and 45o directions order to evaluate elastic constants of the layers. Compression tests were conducted using a biaxial extensometer to gather stress-strain data. Most of the elastic constants of face and core layers are significantly different. The Young’s modulus in perpendicular directions for both layers is inferior to those of parallel directions. The shear values of face layers are significantly higher than those of core layers. Some of the Poisson’ ratios are similar. The data presented in the study can be used in advanced modeling of MDF panels where high accuracy is required.
机译：通过在恒定湿度条件（21oC和65 RH相对湿度）下进行压缩测试，评估了MDF芯和表层的弹性常数。确定了三个杨氏模量，三个剪切模量和六个泊松比。使用台锯将整个MDF面板（1880x3660mm）剥去表面和芯层。芯和面被粘在一起以实现均匀的材料性能。沿主方向和45o方向切割20x20x60mm样品，以评估各层的弹性常数。使用双轴引伸计进行压缩测试，以收集应力-应变数据。面层和芯层的大多数弹性常数显着不同。两层的垂直方向的杨氏模量均低于平行方向的杨氏模量。面层的剪切值显着高于芯层的剪切值。一些泊松比是相似的。研究中提供的数据可用于需要高精度的MDF面板的高级建模中。

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