Shear horizontal (SH) ultrasound wave propagation around smooth corners [PDF]
, 2014 Shear horizontal (SH) ultrasound guided waves are being used in an increasing number of non-destructive testing (NDT) applications. One advantage SH waves have over some wave types, is their ability to propagate around curved surfaces with little energy ...
Burrows, S. E. (Susan E.) +2 more
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Structural Health Monitoring of Large Structures Using Acoustic Emission-Case Histories [PDF]
, 2019 Acoustic emission (AE) techniques have successfully been used for assuring the structural integrity of large rocket motorcases since 1963 [...
Ono, Kanji
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Novel method for detection of void defects under track slabs using air-coupled ultrasonic sensors
International Journal of Distributed Sensor Networks, 2020 Void defects under track slabs are the main danger affecting the safe operation of high-speed railways. In the short high-speed railway maintenance periods, China’s high-speed railway line maintenance operations must quickly and dynamically determine ...
Xingjie Chen +7 more
doaj +1 more source
MEMS Vibrometer for Structural Health Monitoring Using Guided Ultrasonic Waves
Sensors, 2022 Structural health monitoring of lightweight constructions made of composite materials can be performed using guided ultrasonic waves. If modern fiber metal laminates are used, this requires integrated sensors that can record the inner displacement ...
Jan Niklas Haus +6 more
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Frequency-sweep examination for wave mode identification in multimodal ultrasonic guided wave signal [PDF]
, 2014 This article has been made available through the Brunel Open Access Publishing Fund.Ultrasonic guided waves can be used to assess and monitor long elements of a structure from a single position.
Balachandran, W +4 more
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Deciphering acoustic emission signals in drought stressed branches: the missing link between source and sensor [PDF]
, 2015 When drought occurs in plants, acoustic emission (AE) signals can be detected, but the actual causes of these signals are still unknown. By analyzing the waveforms of the measured signals, it should, however, be possible to trace the characteristics of ...
Hamstad, Marvin A +3 more
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A match coefficient approach for damage imaging in structural components by ultrasonic synthetic aperture focus [PDF]
, 2017 Ultrasonic Synthetic Aperture Focus (SAF) techniques are commonly used to image structural defects. In this paper, a variation of SAF based on ideas borrowed from Matched Field Processing (MFP) is evaluated to reduce artifacts and sidelobes of the ...
Lanza di Scalea, F. +4 more
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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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Study on Defect Monitoring of Buried Pipelines Based on Piezoelectric Ceramic Transducer
Shiyou jixie, 2022 In order to monitor the defects in buried pipelines accurately,the piezoelectric ceramic transducer was applied to excite longitudinal mode ultrasonic guided waves in buried pipelines.In this paper,the propagation of ultrasonic guided waves in buried ...
Xu Yang, Luo Mingzhang, Du Guofeng
doaj
Automatic Guided Waves Data Transmission System Using an Oil Industry Multiwire Cable
Sensors, 2020 Alternative wireless data communication systems are a necessity in industries that operate in harsh environments such as the oil and gas industry. Ultrasonic guided wave propagation through solid metallic structures, such as metal barriers, rods, and ...
Gianpiero Trane +2 more
doaj +1 more source