The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
The result shows that the cutter blade edge radius, edge angle, the linear abrasion and the edge notch depth are main factors affecting its sharpness.
分析结果表明， 纤维切割过程中，切断刀锋利性能的变化主要与切断刀的初始刃口半径、刃口角度、刃口的磨损量以及刃口上缺口的深度有关。
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