Smart Structures Research Laboratory, Department of Civil, Structural, and Environmental Engineering, University at Buffalo, Buffalo, NY 14228, United States.
Ultrasonics. 2015 Mar;57:198-208. doi: 10.1016/j.ultras.2014.11.011. Epub 2014 Nov 28.
This study presents a nondestructive evaluation method based on guided ultrasonic waves (GUW) to quantify corrosion damage of prestressing steel strands. Specifically, a reference-free algorithm is proposed to estimate the strand's cross-section loss by using dispersion curves, continuous wavelet transform, and wave velocity measurements. Accelerated corrosion tests are carried out to validate the proposed approach. Furthermore, the propagation of Heisenberg uncertainty to diameter measurement is also investigated. The method can reasonably estimate the wires' diameter without any baseline as a reference.
本研究提出了一种基于导波（GUW）的无损评估方法，用于定量评估预应力钢绞线的腐蚀损伤。具体来说，提出了一种无参考算法，通过使用频散曲线、连续小波变换和波速测量来估计钢绞线的横截面积损失。进行了加速腐蚀测试来验证所提出的方法。此外，还研究了海森堡不确定性对直径测量的传播。该方法可以合理地估计没有任何基线作为参考的钢丝直径。
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