Results 21 to 30 of about 33,881 (247)

Multiple wavemode scanning for near and far-side defect characterisation [PDF]

, 2020
The combination of ultrasonic inspections using different wavemodes can give more information than is available with single mode inspection. In this work, the response of shear and Rayleigh waves to surface-breaking defects propagating on the near-side ...
Edwards, R. S. (Rachel S.), Xiang, L.
core   +1 more source

Recommendation of RILEM TC 212-ACD: acousticemission and related NDE techniques for crack detectionand damage evaluation in concrete. Measurement method for acoustic emission signals in concrete [PDF]

, 2010
The text presented hereafter is a draft for general ...
Aggelis, D., Breysse, D., Forde, M.C., Grosse, C., Helmerich, R., Ivanovich, S.A., Kamada, T., Lacidogna, Giuseppe, Moczko, A., Ohtsu, M., Sajna, A., Shigeishi, M., Shiotani, T., Suzuki, T., Van Mier, J.G.M., Vogel, T., Watanabe, T., Yuyama, S.   +17 more
core   +2 more sources

Use of ashes and ash-and-slad wastes in construction [PDF]

Инженерно-строительный журнал, 2011
The use of ash waste saves expenses on main materials without compromising the quality of the product, while solving the problem of disposal of ash materials.
P. Lahtinen, D.V. Petrosov, A.I. Kalachev, N.I. Vatin   +3 more
doaj   +1 more source

Health Status Assessment of Passenger Ropeway Bearings Based on Multi-Parameter Acoustic Emission Analysis

Sensors
This study presents a comprehensive investigation of acoustic emission (AE) characteristics for condition monitoring of rolling bearings in passenger ropeway systems.
Junjiao Zhang, Yongna Shen, Zhanwen Wu, Gongtian Shen, Yilin Yuan, Bin Hu   +5 more
doaj   +1 more source

Circumferential Crack Detection in Ultra-High-Pressure Tubular Reactors with Pulsed Eddy Current Testing

Sensors
Ultra-high-pressure tubular reactors are crucial pieces of equipment for polyethylene production. Long-term operation under high temperature, high pressure, and other extremely harsh conditions can lead to various defects, with circumferential cracks ...
Yaxing Wang, Jie Sun, Huasheng Hu, Bo Hu, Weiqi Bin, Wen Shi, Yuewen Fu   +6 more
doaj   +1 more source

A fatigue-reliability approach using ultrasonic non-destructive inspection

Comptes Rendus. Mécanique, 2023
Fatigue crack propagation can considerably reduce the life of components, leading to sudden failures. This paper provides a method for fatigue life prediction based on ultrasonic non-destructive inspection applied on Al 2024 T3 material.A new crack ...
Chouikh, Iheb, Bouraoui, Chokri
doaj   +1 more source

Automatic Detection of Concrete Surface Defects Using Pre-Trained CNN and Laser Ultrasonic Visualization Testing

International Journal of Prognostics and Health Management
In recent years, nondestructive testing for civil engineering structures has become increasingly important. Ultrasonic testing is one of nondestructive inspection methods for civil structures. However, the inspection of civil engineering structures takes
Takahiro Saitoh, Tsuyoshi Kato, Sohichi Hirose   +2 more
doaj   +1 more source

Weld procedure produces quality welds for thick sections of Hastelloy-X [PDF]

, 1967
Welding program produces premium quality, multipass welds in heavy tube sections of Hastelloy-X. It develops semiautomatic tungsten/inert gas procedures, weld wire procurement specifications material weld properties, welder-operator training, and ...
Flens, F. J., Fletcher, C. W., Glasier, L. F., Jr.   +2 more
core   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

Research on AE method for thermal fatigue damage in heat transfer oil pipes

Frontiers in Physics
Thermal oil pipes in concentrated solar power systems face prevalent risks of thermal fatigue damage during long-term outdoor service, while the dynamic monitoring of such structures remains an unaddressed gap.
Zhenlong Hu, Zhenlong Hu, Xinxin Luo, Junjiao Zhang, Junjiao Zhang, Qiufeng Li, Changhui Huang, Chao Lu, Xin Li   +8 more
doaj   +1 more source