Reducing false alarms in guided waves structural health monitoring of pipelines: Review synthesis and debate

Application Research of Ultrasonic-Guided Wave Technology in Pipeline Corrosion Defect Detection: A Review

“…The propagation state of UGW is influenced by the geometric shape of the waveguide. UGW comprises mechanical vibrations generated beneath the excitation source and subsequently propagated through the waveguide [27,28]. At the interfaces of elastic media, UGW can induce reflection, refraction, and waveform transformation.…”

“…Ultrasonic-guided waves find wide-ranging applications in the non-destructive testing of various material structures, with the detection echo signals containing nearly all the information about the inspected structures. Its primary advantages and characteristics are as follows [25,27,51,[59][60][61][62]:…”

“…Ultrasonic-guided wave technology is applied to the non-destructive testing of materials such as pipelines, steel rails, high-voltage transmission lines, plates, composite materials, and more. It is also used for damage detection and assessments of various structural components in engineering structures, including honeycomb structures, aircraft fuselage structures or components, and infrastructure [18][19][20][21][22][23][24][25][26][27]. For pipeline inspection, the utilization of the multimodal and dispersive characteristics of a guided wave is essential.…”

On the use of ultrasonic guided waves for the health monitoring of rails

“…The differentiation between the aforementioned causes of changes is not always clear-cut. In literature, statistical methods were suggested to mitigate (ideally eliminate) the EOCs effects, 35 such as novelty detection, 36 support vector machine, 37 singular value decomposition, 38 sparse estimation, 39 etc.…”

“…In order to demystify the EOCs effects and then enhancing the damage detection, statistics-based models were built, as it is the case in other SHM applications. 35 For example, in reference 100 , a statistical outlier analysis, based on a combination of DWT Mahalanobis squared distance and deconvolution technique, was applied to reduce the probability of false alarms. This study showed the potential of the method to inspect various discontinuities such as joints and welds at speeds up to 80 mph.…”