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, 2020 The propagation of ultrasonic guided waves in solids is an important area of scientific inquiry, primarily due to their practical applications for nondestructive characterization of materials, such as nondestructive inspection, quality assurance testing, structural health monitoring, and providing a material state awareness.
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Ultrasonic guided waves in elliptical annular cylinders [PDF]
The Journal of the Acoustical Society of America, 2015 This paper studies the influence of cross-section ovalness or ellipticity on lower order axisymmetric guided wave modes in thin pipes. The second longitudinal mode L(0,2) and the fundamental torsional mode T(0,1) are studied, as these are of interest to current pipe inspection.
Prabhu, Rajagopal +1 more
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Large Area Detection of Microstructural Defects with Multi-Mode Ultrasonic Signals
Applied Sciences, 2022 Cyclic loading or other stresses can lead to development of cracks and crack growth in mechanical structures, leading to eventual failure. While ultrasound imaging can be used for non-destructive testing of such structures, conventional ultrasound ...
Taeho Ju, Alp T. Findikoglu
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Modeling the Effect of Anisotropy in Ultrasonic-Guided Wave Tomography [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022 Most of the existing ultrasonic-guided wave tomography approaches to map structural changes in plate-like waveguides are based on the assumption of an isotropic material model. However, there are many other engineering applications that are made of anisotropic materials and structures.
Madis Ratassepp +3 more
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On the Piezoelectric Detection of Guided Ultrasonic Waves [PDF]
Materials, 2017 In order to quantify the wave motion of guided ultrasonic waves, the characteristics of piezoelectric detectors, or ultrasonic transducers and acoustic emission sensors, have been evaluated systematically. Such guided waves are widely used in structural health monitoring and nondestructive evaluation, but methods of calibrating piezoelectric detectors ...
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Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors
Sensors, 2009 Guided wave detection using different fiber optic sensors and their applications in damage detection for composite laminates were systematically investigated and compared in this paper.
Fucai Li +3 more
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Sensors, 2016 The market for process instruments generally requires low cost devices that are robust, small in size, portable, and usable in-plant. Ultrasonic torsional guided wave sensors have received much attention by researchers for measurement of viscosity and/or
Amir Rabani
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Applied Sciences, 2018 In a low-frequency ultrasonic guided wave dual-probe flaw inspection of a square steel bar with a finite length boundary, the flaw reflected pulse wave cannot be identified using conventional time monitoring when the flaw is located near the reflection ...
Lei Zhang +3 more
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IEEE Access, 2020 Temperature and load variations significantly affect ultrasonic guided wave propagation and therefore lead to the increasing of diagnostic uncertainty of the guided wave-based structural health monitoring system, which may cause false reports and false ...
Yishou Wang +6 more
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Signal Enhancement Technology Based on Ultrasonic Guided Wave Rail Bottom Crack Detection
Chengshi guidao jiaotong yanjiu［Objective］ During the propagation of guided waves in rails, there are problems of poor anti-interference ability and severe signal attenuation, which hinder the identification of rail bottom cracks.
HE Jiping +7 more
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