Experimental investigation on synergetic prediction of granite rockburst using rock failure time and acoustic emission energy

Wang, Chunlai; Cao, Chenxi; Li, Changfeng; Chuai, Xiaosheng; Zhao, Guiping; Lü, Hui

doi:10.1007/s11771-022-4971-3

Cited by 25 publications

(7 citation statements)

References 45 publications

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“…The bottom of an oil tank can be regarded as a two-dimensional circular plate, as shown in Figure 2 [19][20][21][22]. When the stress on the bottom of the oil tank changes, the measured defect site will generate continuous or discontinuous AE signals.…”

Section: Mathematical Modeling Of Acoustic Emission Detectionmentioning

confidence: 99%

Research on Corrosion Detection Method of Oil Tank Bottom Based on Acoustic Emission Technology

Hua,

Chen,

Zhao

et al. 2024

Preprint

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This paper presents an acoustic emission (AE) detection method for refined oil storage tanks, enabling online detection of corrosion points and microleakage in the tank floor. The method utilizes an explosion-proof acoustic emission instrument to detect the floor of a refined oil storage tank. By calculating the time difference between the defective acoustic signal and the speed of acoustic wave transmission, a mathematical model is constructed to analyze the detected signals. A technical scheme for acoustic emission detection in storage tanks is designed, and the instru-ment is used to carry out acoustic emission testing on the product oil storage tank floor. Based on these test results, location analysis of acoustic emission sources is conducted on the bottom plate of the tank, evaluating its corrosion condition accurately. The consistency between the evaluation and subsequent open tank tests confirms that using acoustic emission technology effectively captures corrosion signals from product oil storage tank bottoms. Consequently, it significantly improves inspection efficiency by avoiding unnecessary tank-opening operations. Combining this method with open tank inspection operations such as the leakage magnetic method, one can fully grasp the status of the refined oil storage tanks.

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Section: Mathematical Modeling Of Acoustic Emission Detectionmentioning

confidence: 99%

Research on Corrosion Detection Method of Oil Tank Bottom Based on Acoustic Emission Technology

Hua,

Chen,

Zhao

et al. 2024

Preprint

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“…When the stress on the bottom of the oil tank changes, the measured defect site will generate continuous or discontinuous AE signals. Information about the location of AE signals can be acquired by obtaining the distance and time taken for the signals to reach three or more AE sensors [18][19][20][21][22]. Assuming the signal transmitted from the defect position reaches sensor i after t i , and the transmission speed of sound in the tank bottom plate is v, the following formula can be obtained:…”

Section: Mathematical Modeling Of Ae Detectionmentioning

confidence: 99%

Research on a Corrosion Detection Method for Oil Tank Bottoms Based on Acoustic Emission Technology

Hua,

Chen,

Zhao

et al. 2024

Sensors

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This paper presents an acoustic emission (AE) detection method for refined oil storage tanks which is aimed towards specialized places such as oil storage tanks with high explosion-proof requirements, such as cave oil tanks and buried oil tanks. The method utilizes an explosion-proof acoustic emission instrument to detect the floor of a refined oil storage tank. By calculating the time difference between the defective acoustic signal and the speed of acoustic wave transmission, a mathematical model is constructed to analyze the detected signals. An independent channel AE detection system is designed, which can store the collected data in a piece of independent explosion-proof equipment, and can analyze and process the data in a safe area after the detection, solving the problems of a short signal acquisition distance and the weak safety protection applied to traditional AE instruments. A location analysis of the AE sources is conducted on the bottom plate of the tank, evaluating its corrosion condition accurately. The consistency between the evaluation and subsequent open-tank tests confirms that using AE technology effectively captures corrosion signals from oil storage tanks’ bottoms. The feasibility of carrying out online inspection under the condition of oil storage in vertical steel oil tanks was verified through a comparison with open inspections, which provided a guide for determining the inspection target and opening order of large-scale oil tanks.

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“…Since the rock particles and cementation components are random, the strength of microunits is also random, and assuming that the microunit strength obeys the Weibull statistical distribution [16].…”

Section: Analysis Of the Damage Evolution Law Characterized By Acoust...mentioning

confidence: 99%

“…A large number of scholars have carried out researches on the application of acoustic emission in rock fracture monitoring and achieved fruitful results. Yang [16] studied the microfracture behavior and acoustic emission characteristics of rock under hydraulic coupling through machine learning. Wang et al [17] used acoustic emission technology to explain the law of granite crack growth by carrying out true triaxial tests on granite and building a cooperative prediction model for rock failure time.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Emission Characteristics and Damage Evolution Analysis of Sandstone under Three-Point Bending Test

Qin

Chen

Duan

et al. 2023

Advances in Materials Science and Engineering

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In order to study the prevention of roadway roof bending, sinking, and breaking and the prevention of dynamic disasters such as the appearance of rock bursts, three-point bending experiments of sandstone under different spans were carried out. By using stress loading system and acoustic emission technology, the acoustic emission characteristic parameters of the sandstone fracture process were analyzed, the precursory information of rock bending fracture was explored, and the evolution law of sandstone damage based on acoustic emission characteristics was obtained. The results showed that according to the variation of acoustic emission ringing count, the load-time curve was divided into four typical stages: the first stage showed an overall increasing trend; the second stage showed an obvious increasing trend; the third stage showed obvious accelerated growth and the acoustic emission ringing count reached the maximum at the moment of rupture. In the fourth stage, the amplitude and frequency of the ringing count are large and high. With the increase in span, the cumulative ringing counts of AE decreased, and the rate of change gradually decreased. The fracture process of three-point bending sandstone can reflect the precursor information of rock fracture from time domain, frequency domain, and R value (ratio of cumulative acoustic emission ringing count to cumulative energy count). In time domain, the evolution characteristics of AE cumulative ringing count stage II can be used to predict the three-point bending fracture of sandstone. The peak frequency shows a linear increase after a spike and then an accelerated increase to a rupture, and the boundary point between the spike and the linear and nonlinear can be obtained. The decrease in R value can indicate that the main crack is growing in the specimen. According to the damage rate, the characteristics of the damage variables can be divided into five stages: stationary and low, gradually increasing, gradually decreasing, main crack coalescence, and complete fracture. With the increase in span, the fracture damage shows a decreasing trend. The residual damage fluctuates between 0.38 and 0.40 due to the difference in crack propagation trajectory. It has theoretical research value for revealing the internal mechanism of rock bending and fracture and has engineering guiding significance for mine pressure and rock strata control and dynamic disaster prevention.

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Experimental investigation on synergetic prediction of granite rockburst using rock failure time and acoustic emission energy

Cited by 25 publications

References 45 publications

Research on Corrosion Detection Method of Oil Tank Bottom Based on Acoustic Emission Technology

Research on Corrosion Detection Method of Oil Tank Bottom Based on Acoustic Emission Technology

Research on a Corrosion Detection Method for Oil Tank Bottoms Based on Acoustic Emission Technology

Acoustic Emission Characteristics and Damage Evolution Analysis of Sandstone under Three-Point Bending Test

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