Results 11 to 20 of about 79,719 (263)

Formation mechanism of SH guided wave in weld seam

open access: yesResults in Physics, 2020
Shear horizontal (SH)-guided wave detection of weld seams is a new type of weld detection technology. To better apply SH-guided waves to weld detection, it is necessary to study the formation mechanism of SH-guided waves and to identify weld structures ...
Xiaolong Zhang, Zhenying Xu
doaj   +1 more source

Ultrasonic guided wave detection of U-shaped pipeline [PDF]

open access: yesMATEC Web of Conferences, 2020
The guided waves in the elbow was analyzed using semi- analytical finite element method, which was used to calculate the dispersion curves, along with the vibration deformation and energy flow density distribution of the elbow cross-section.
Zhu Longxiang   +3 more
doaj   +1 more source

Study on Bond Defect Detection in Grouted Rock Bolt Systems under Pullout Loads

open access: yesAdvances in Materials Science and Engineering, 2022
In grouted rock bolt systems, bond defects often occur, which seriously affects the safety of rock mass structures. Therefore, in this study, based on the existence of bond defects, laboratory tests were conducted to detect the location and length of ...
Shuisheng Yu   +4 more
doaj   +1 more source

Research on Fatigue Characterization and Life Prediction of Composites Based on Guided Wave In-situ Detection

open access: yesHangkong gongcheng jinzhan, 2022
As composite materials are playing more important role in advanced aircraft structures,the change of mechanical properties of composites during service is of significant importance for the overall safety of the aircraft.In order to achieve the goal of ...
YAO Weixing   +5 more
doaj   +1 more source

Superheterodyne-inspired waveguide-integrated metasurfaces for flexible free-space light manipulation

open access: yesNanophotonics, 2022
Metasurfaces have attracted significant attention in recent years due to their unprecedented light-manipulation abilities. However, most metasurfaces so far have relied on external light excitation, prohibiting them from full on-chip integration ...
Wu Geng-Bo   +3 more
doaj   +1 more source

Multi-Dimensional Uniform Initialization Gaussian Mixture Model for Spar Crack Quantification under Uncertainty

open access: yesSensors, 2021
Guided Wave (GW)-based crack monitoring method as a promising method has been widely studied, as this method is sensitive to small cracks and can cover a wide monitoring range.
Qiuhui Xu   +2 more
doaj   +1 more source

Mode control of guided wave in magnetic hollow cylinder using electromagnetic acoustic transducer array

open access: yesNuclear Engineering and Technology, 2015
The aim of this work is to demonstrate a method for exciting and receiving torsional and longitudinal mode guided waves with an electromagnetic acoustic transducer (EMAT) ring array. First of all, a three-dimensional guided wave simulator is developed in
Akinori Furusawa   +2 more
doaj   +1 more source

The mode transformation of a T(0,1) guided wave in an elbow pipe and its influence on defect location

open access: yesAIP Advances, 2020
To correct the inaccurate location of elbow pipe defects, our study established an experimental platform for magnetostrictive T(0,1) guided wave detection.
Shengrong Long   +4 more
doaj   +1 more source

Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors

open access: yesSensors, 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
doaj   +1 more source

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