Effect of probability of detection upon the definition of inspection intervals for railway axles
Effect of probability of detection upon the definition of inspection intervals for railway axles
复制标题
检测概率对铁路车轴检查间隔定义的影响
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Beretta
中科院分区：
文献类型：
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作者：
M. Carboni;S. Beretta
铁路轮对检测间隔的优化涉及到轮轴疲劳裂纹扩展的可靠估计等问题。考虑到这一点，本文着重于对A1N钢制成的考虑轴的描述，以及一些典型的载荷谱。应用从专用软件NASGRO®派生的适当算法，可以根据周期获得寿命预测，并讨论服务负载的影响。然后分析寿命估计与不同的无损检测技术的检测曲线的概率，以确定观察的总概率，在定期检查，裂纹或缺陷。
Abstract The need to optimize inspection intervals of railway wheelsets involves, among other aspects, a reliable estimation of fatigue crack growth in the axles. With this in mind, the present paper focuses on the description of the considered axle made of A1N steel, and on some typical load spectra. Application of an opportune algorithm, derived from the dedicated soft-ware NASGRO®, made it possible to obtain life predictions in terms of cycles, and to discuss the influence of service loads. Life estimates were then analysed together with probability of detection curves of different non-destructive testing techniques in order to determine the total probability of observing, during periodical inspections, cracks or defects.