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缆索体系作为现代土木建设广泛应用结构之一,作为主要承载部件对整体结构的安全性和使用寿命至关重要。磁致伸缩导波无损检测技术在缆索损伤和腐蚀检测方面具有检测长度大,覆盖结构区域广等优势,逐渐成为应用广泛的缆索新型无损检测方法。磁致伸缩导波无损检测技术在损伤和腐蚀的定性问题上已经比较稳定,缺陷尺寸和缺陷回波的定量关系与诸多因素有关,本文对缆索的基本单元高强钢丝的缺口检测信号进行了实验研究,得到缺陷回波反射系数与钢丝缺陷截面损失率的关系,发现其与抛物线非常近似;本研究为钢丝及钢丝拉索的损伤和腐蚀磁致伸缩导波无损检测的定量评价提供了基础。
Cable system as one of the most widely used modern civil engineering structures, as the main load-bearing components of the overall structure of the safety and life is essential. Magnetostrictive guided wave nondestructive testing technology in the cable damage and corrosion detection has a large detection length, covering a wide range of structural advantages, has gradually become a widely used new nondestructive testing of cables. Magnetostrictive guided non-destructive testing of the damage and corrosion of the qualitative problem has been relatively stable, the size of the defect and the quantitative relationship between defect echo and many other factors related to this article on the cable of the basic unit of high-strength steel notch detection signal of an experimental study The relationship between the reflection coefficient of the defect echo and the loss rate of the wire defect was obtained and found to be very similar to the parabola. This study provided the basis for the quantitative evaluation of the damage and corrosion magnetostrictive guided wave nondestructive testing of steel wire and steel wire.