Results 21 to 30 of about 213,770 (341)

Influence of Propagation Distance on Characteristic Parameters of Acoustic Emission Signals in Concrete Materials Based on Low-Frequency Sensor

Advances in Civil Engineering, 2022
Acoustic emission is a nondestructive testing technology based on the propagation of transient elastic waves captured by acoustic emission sensors. The acoustic emission signal depends not only on the distance and quality of the propagation path of the ...
Fen Liu, Rui Guo, Xiujuan Lin, Xiaofang Zhang, Shifeng Huang, Feng Yang, Xin Cheng   +6 more
doaj   +1 more source

Study on the tensile properties of sandstone with different water contents under freeze-thaw cycles

Gong-kuang zidonghua, 2023
Mines in cold regions of China are affected by freeze-thaw cycles, resulting in uneven expansion and contraction of rocks, leading to the formation of cracks. At the same time, the expansion of cracks due to water frost heave between cracks leads to rock
MIAO Haodong, REN Fuqiang
doaj   +1 more source

Rock burst risk assessment of working face during open-off cut based on acoustic emission monitoring

Meikuang Anquan, 2021
Impact risk assessment is a work that must be carried out in driving and stoping stage in mining coal seam with impact risk to ensure the safety of driving and stoping working face.
XING Linnan
doaj   +1 more source

Acoustic Emission Monitoring of the Syracuse Athena Temple: Scale Invariance in the Timing of Ruptures

, 2010
We perform a comparative statistical analysis between the acoustic-emission time series from the ancient Greek Athena temple in Syracuse and the sequence of nearby earthquakes.
A. Carpinteri, A. Corral, A. Manuello, C. F. Richter, D. Krajcinovic, G. Lacidogna, G. Niccolini, T. Utsu, Y. Y. Kagan, Y. Y. Kagan   +9 more
core   +1 more source

Research on Acoustic Emission and Electromagnetic Emission Characteristics of Rock Fragmentation at Different Loading Rates

Shock and Vibration, 2018
The relationships among the generation of acoustic emission, electromagnetic emission, and the fracture stress of rock grain are investigated, which are based on the mechanism of acoustic emission and electromagnetic emission produced in the process of ...
Fujun Zhao, Yu Li, Zhouyuan Ye, Yong Fan, Siping Zhang, Haifan Wang, Yonghong Liu   +6 more
doaj   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Acoustic Emission Detection and Analysis Method for Health Status of Lithium Ion Batteries

Sensors, 2021
The health detection of lithium ion batteries plays an important role in improving the safety and reliability of lithium ion batteries. When lithium ion batteries are in operation, the generation of bubbles, the expansion of electrodes, and the formation
Kai Zhang, Jianxiang Yin, Yunze He
doaj   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Acoustic emission in the friction of composite materials

Aviation, 2014
The model of acoustic emission signal formation during friction and wearing of surfaces of composite materials was examined. The forms of acoustic emission resultant signals were shown.
Sergey Filonenko, Aleksandr Kosmach
doaj   +1 more source

Signal Identification of Wire Breaking in Bridge Cables Based on Machine Learning

Mathematics, 2022
With the booming development of bridge construction, bridge operation and maintenance have always been major issues to ensure the safety of the community.
Guangming Li, Heming Ding, Yaohan Li, Chun-Yin Li, Chi-Chung Lee   +4 more
doaj   +1 more source