Results 1 to 10 of about 335,890 (336)

EMAT Generated Guided Waves in Pipes [PDF]

e-Journal of Nondestructive Testing, 2023
Pipeline integrity is a must to maintain for the oil and gas industry to avoid downtimes in case of disastrous events. Following this line, pipelines are periodically inspected to know their condition and make timely decisions for replacement or repair.
Azhar Memon, Luai M. Alhems
doaj   +2 more sources

Crack Detection of Threaded Steel Rods Based on Ultrasonic Guided Waves [PDF]

Sensors, 2022
Fatigue cracks are typical damage of threaded steel rods under dynamic loads. This paper presents a study on ultrasonic guided waves-based, fatigue-crack detection of threaded rods.
Kunhong Peng, Yi Zhang, Xian Xu, Jinsong Han, Yaozhi Luo   +4 more
doaj   +2 more sources

Analysis of Bonding Defects in Cementing Casing Using Attenuation Characteristic of Circumferential SH Guided Waves [PDF]

Sensors
Circumferential guided wave detection technology can serve as an alternative method for detecting casing bond defects. Due to the presence of the cement cladding, the circumferential SH guided waves transmit shear waves into the cement cladding as they ...
Jie Gao, Tianhao Chen, Yan Lyu, Guorong Song, Jian Peng, Cunfu He   +5 more
doaj   +2 more sources

Axial Stress Measurement of Steel Tubes Using Ultrasonic Guided Waves [PDF]

Sensors, 2022
Axially loaded steel tubes are widely used as primary structural members in civil engineering structures. In this paper, a stress measurement method for axially loaded steel tubes is developed based on the linear relationship between the group velocity ...
Siyuan Zhu, Xian Xu, Jinsong Han, Yaozhi Luo   +3 more
doaj   +2 more sources

Damage Monitoring of Steel Bars Based on Torsional Guided Waves [PDF]

Sensors
Ultrasonic guided waves represent a new development in the field of non-destructive testing. Longitudinal guided waves are mostly used to monitor the damage of steel bars, but the received signal is usually degraded and noisy owing to its dispersive ...
Zhupeng Zheng, Zihao Zhang, Cheng Huang
doaj   +2 more sources

Simultaneous imaging of bidirectional guided waves probes arterial mechanical anisotropy, blood pressure, and stress synchronously. [PDF]

Sci Adv
Jiang Y, Li GY, Hu K, Ma S, Zheng Y, Jiang M, Zhang Z, Wang X, Cao Y.   +8 more
europepmc   +2 more sources

2-D Elastodynamic Time-Reversal Analysis for Surface Defects on Thin Plate Using Topological Sensitivity

Axioms, 2023
In recent years, there has been increasing attention on the development of non-destructive evaluation (NDE) methods using guided waves for long-length materials such as thin plates and pipes.
Takahiro Saitoh
doaj   +1 more source

Investigation on Methods of Determining the Grouting Quality of Embedded Rock Bolts Using High Frequency Guided Waves

Advances in Civil Engineering, 2021
Two experiments, with differing equipment setups, were used to test rock bolts, with differing structures and grouting qualities, using low frequency (20–200 kHz) and high frequency (700 kHz-3 MHz) guided waves to determine the effect of grouting quality
Peng Li, Changsuo Zhang, Guanlin Yang
doaj   +1 more source

Experimental and Numerical Studies on Bond Quality of Fully Grouted Rockbolt under Confining Pressure and Pull-Out Load

Shock and Vibration, 2022
In mining engineering, the in situ stress changes with the stress induced by the surrounding mining activities. It positively or negatively affects the propagation of ultrasonic guided waves in rockbolts.
Shuisheng Yu, Leilei Niu, Jin Chen
doaj   +1 more source

Resonant Guided Wave Networks [PDF]

Physical Review Letters, 2010
9 pages, 5 ...
Feigenbaum, Eyal, Atwater, Harry A.
openaire   +4 more sources