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首页> 外文会议>Annual Symposium on Quantitative Nondestructive Evaluation; 19980719-24; Snowbird,UT(US) >A STUDY ON ULTRASONIC DETECTION OF FLAWS IN WELDS OF RAILS
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A STUDY ON ULTRASONIC DETECTION OF FLAWS IN WELDS OF RAILS

机译：超声波检测铁轨焊缝缺陷的研究

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During manufacture and in service, various defects might emergence in rails. Some defects are volume ones, and others are planar ones, like facula, greyness, non-welded together and fatigue crack, plane defects are very dangerous. They not only reduce the effective section of rail, but also bring on stress concentration. It is important to detect all the defects to make sure security of transportation. The detection is very difficult owing to complicated shape of cross, large thickness in some places, uncertain positions of defects. The method of detecting the planar defects and the defects located at the rail fillet, for terms of the different parts of a rail, see Fig.4,were mainly discussed in this paper.
机译：在制造和使用期间，导轨中可能会出现各种缺陷。有些缺陷是体积缺陷，而另一些则是平面缺陷，例如光斑，灰色，未焊接在一起和疲劳裂纹，因此，平面缺陷非常危险。它们不仅减小了钢轨的有效截面，而且引起了应力集中。重要的是要检测所有缺陷以确保运输安全。由于十字形状复杂，某些地方厚度较大，缺陷位置不确定，因此检测非常困难。本文主要讨论检测平面缺陷和位于钢轨圆角处的缺陷的方法（针对钢轨的不同部分），见图4。

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