Results 41 to 50 of about 145,304 (328)
Defects Inspection in Wires by Nonlinear Ultrasonic-Guided Wave Generated by Electromagnetic Sensors
Applied Sciences, 2020 Steel wires are widely used as raw materials for spring valves in engines. Considering the quality and safety issues of their structure, there is a demand to develop nondestructive inspection approaches to detect initial damages in steel.
Junpil Park +3 more
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On the scattering of torsional elastic waves from axisymmetric defects in coated pipes [PDF]
, 2012 This is the post-print version of the Article - Copyright @ 2012 ElsevierLong range ultrasonic testing is now a well established method for examining in-service degradation in pipelines.
Mudge, P, Zlatev, Z, Kirby, R
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Ultrasonic metal sheet thickness measurement without prior wave speed calibration [PDF]
, 2013 Conventional ultrasonic mensuration of sample thickness from one side only requires the bulk wave reverberation time and a calibration speed. This speed changes with temperature, stress, and microstructure, limiting thickness measurement accuracy ...
Dixon, S. +4 more
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Italian National Conference on Sensors, 2023 The ultrasonic guided lamb wave approach is an effective non-destructive testing (NDT) method used for detecting localized mechanical damage, corrosion, and welding defects in metallic pipelines. The signal processing of guided waves is often challenging
Li Shang +5 more
semanticscholar +1 more source
Chinese Journal of Mechanical Engineering, 2023 Pinhole corrosion is difficult to discover through conventional ultrasonic guided waves inspection, particularly for micro-sized pinholes less than 1 mm in diameter.
Jinjie Zhou +5 more
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Classification of solutions for guided waves in fluid-loaded viscoelastic composites with large numbers of layers [PDF]
, 2023 Guided ultrasonic waves are used for the inspection of multilayered composite aerospace structures. Calculating the corresponding dispersion diagrams is challenging for thick-walled composites with more than 100 layers, such as in modern rocket booster ...
Armin M. A. Huber, Huber, Armin
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Applied SciencesThe imaging detection of ultrasonic guided waves in plates using arc sparse arrays is highly significant for weld scattering conditions. A novel approach for detecting welded plate structures using the left rank of ultrasonic guided waves in arc sparse ...
Xinjie Zhu +4 more
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Grease-like coupling agent based on metal ionization method for low-frequency ultrasonic NDT
Results in Physics, 2019 In long-distance NDT based on ultrasonic guided waves with low-frequency excitation, the most commonly used industrial coupling agents are grease-like coupling agents.
Lei Zhang +3 more
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A phased array-based method for damage detection and localization in thin plates [PDF]
, 2009 A method for damage localization based on the phased array idea has been developed. Four arrays oftransducers are used to perform a beam-forming procedure.
Irina Trendafilova +7 more
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Magnetic phase transitions in Gd64Sc36 studied using non-contact ultrasonics [PDF]
, 2013 The speed and attenuation of ultrasound propagation can be used to determine material properties and identify phase transitions. Standard ultrasonic contact techniques are not always convenient due to the necessity of using couplant; however, recently ...
Edwards, R. S. (Rachel Sian) +3 more
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