Experimental research on the mechanical and acoustic emission properties of layered sandstone during tensile failure

2021 ◽  
pp. 103225
Author(s):  
Lv Hong ◽  
Peng Kang ◽  
Shang Xue-Yi ◽  
Wang Yun-Qiang ◽  
Liu-Zhao peng
Keyword(s):  
Acoustic Emission ◽  
Experimental Research ◽  
Tensile Failure ◽  
Emission Properties

scholarly journals Research on Failure Characteristics of Concrete Three-Point Bending Beams with Preexisting Cracks in Different Positions Based on Numerical Simulation

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Liuqun Zhao ◽  
Li Zheng ◽  
Hui Qin ◽  
Tiesuo Geng ◽  
Yonggang Tan ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Bearing Capacity ◽  
Failure Modes ◽  
Failure Process ◽  
Engineering Application ◽  
Tensile Failure ◽  
Engineering Structures ◽  
Failure Characteristics ◽  
Three Point Bending ◽  
Wide Range

Concrete three-point bending beams with preexisting cracks are widely used to study the growth process of I-II mixed mode cracks. Studying the failure characteristics of preexisting cracks at different locations on concrete three-point bending beams not only has important scientific significance but also has a wide range of engineering application backgrounds in the safety assessment of engineering structures. In this paper, through several numerical experiments, the influence of preexisting cracks at different positions on the failure characteristics of concrete three-point bending beams is studied, and three typical failure modes are obtained. The failure process of the specimens with three typical failure modes is discussed in detail, and it is pointed out that the crack failure mode is tensile failure. The change trends of bearing capacity, acoustic emission quantity, and acoustic emission energy of three typical failure modes are analyzed. The maximum bearing capacity, the maximum acoustic emission quantity, and energy of three failure modes of concrete three-point bending beams generally show an increasing trend.

Experimental Research of Acoustic Emission (AE) Testing of Blowout Preventer in the Process of Pressured

2014 ◽  
Vol 962-965 ◽  
pp. 411-414 ◽  
Author(s):  
Jun Ru Zhao ◽  
Ting Ting Miao ◽  
Guan Ga Dai
Keyword(s):  
Acoustic Emission ◽  
Crack Propagation ◽  
Experimental Research ◽  
Pressing Process ◽  
Blowout Preventer

Using acoustic emission (AE) technique, test the blowout preventer (BOP) shell with a crack in the pressing process. Firstly, cut a notch of 100mm long and 5mm wide on a BOP shell and weld partly, then pressurized by pneumatic pumps. Test the BOP shell during the crack propagation by AE. The result showed that the AE technique can reflect the activities of the defects timely and effectively, and the destroy situation of the blowout preventer shell in the process of pressured and the location was accurate.

Acoustic emission analysis on tensile failure of steam-side oxide scales formed on T22 alloy superheater tubes

2014 ◽  
Vol 116 (4) ◽  
pp. 044907 ◽  
Author(s):  
Jun-Lin Huang ◽  
Ke-Yi Zhou ◽  
Xin-Meng Wang ◽  
Yi-You Tu ◽  
Jian-Qun Xu
Keyword(s):  
Acoustic Emission ◽  
Tensile Failure ◽  
Oxide Scales ◽  
Emission Analysis ◽  
Acoustic Emission Analysis

scholarly journals Signal Simulation and Experimental Research on Acoustic Emission using LS - DYNA

2015 ◽  
Vol 8 (3) ◽  
pp. 151-157 ◽  
Author(s):  
Zhang Jianchao ◽  
◽  
Hao Rujiang ◽  
Wu Zhe ◽  
Jim Green ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Experimental Research ◽  
Signal Simulation
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