British Columbia coastal lumber manufacturers are investigating machine grading systems suitable for mechanically grading Japanese Post and Beam and 2×4 dimension lumber products. This study investigates longitudinal stress wave systems (MiCROTEC Stress Grader and Brookhuis Timber Grader MTG) that are able to grade the wide range of timber sizes used in Japanese P&B construction. MiCROTEC and MTG modulus of elasticity (MOE) results are compared to the Metriguard Model E 340 transverse vibration MOE and a static flatwise MOE. The relative performance of these systems for predicting MOE and bending strength (MOR) is reported.
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机译：不列颠哥伦比亚省沿海木材制造商正在研究适用于对日本Post and Beam和2×4尺寸木材产品进行机械分级的机器分级系统。这项研究调查了纵向应力波系统（MiCROTEC应力平地机和Brookhuis木材平地机MTG），该系统能够对日本P＆B建筑中使用的各种木材尺寸进行分级。将MiCROTEC和MTG弹性模量（MOE）的结果与Metriguard E 340型横向振动MOE和静态水平MOE进行了比较。报告了这些系统在预测MOE和弯曲强度（MOR）方面的相对性能。
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