Acoustic emission
ACOUSTIC EMISSION ANALYZER
... In this paper appears a solution for acoustic emission analysis commonly known as noise. For the accomplishment of this work a personal computer is used, besides sensors (microphones) and boards designed ...
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Failure behavior monitoring and evaluation of steel–confined reinforced concrete columns by acoustic emission under quasi-static loading
... The mechanical behavior and failure evolution of steel-confined and uncon- fined reinforced concrete RC columns are investigated under quasi-static loading through acoustic emission AE signal. The excellent ...
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Experimental Study on the Characteristics of Acoustic Emission in Damage Evolution Process of Marble under Uniaxial Compressive Load
... and acoustic emission fractal of marble under uniaxial compressive load, damage evolution and acoustic emission(AE) character of marble under uniaxial compression are studied using ...
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Influence of a single lightning discharge on the intensity of an air electric field and acoustic emission of near-surface rocks
... examples (Sobolev and Ponomarev, 2003; Sobolev et al., 2000; Bogomolov et al., 2004; Zacupin et al., 2006) and in natural conditions (Tarasov, 1997; Tarasov et al., 1999; Tarasov and Tarasova, 2004). In previous papers ...
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Near-seismic effects in ULF fields and seismo-acoustic emission: statistics and explanation
... Fig. 1. Curves K s =K s ∗ = 1 (solid line) and K s =0.1 (line with closed circles) in coordinates M (magnitude), R (hypocentral dis- tance). They indicate limiting distances R ∗ (M) for earthquakes with defined value of ...
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Signal Simulation and Experimental Research on Acoustic Emission using LS-DYNA
... “Acoustic emission signals generated by monopole (pencil-lead break) versus dipole sources: finite element modeling and ...of Acoustic Emission, 25, 2007, ...“Acoustic emission ...
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Damage evaluation and failure mechanism analysis of steel tube confined reinforced-concrete columns by acoustic emission technology
... As a new kind of composite structures and its advantages, the using of steel tube confined reinforced concrete (STCRC) columns have received increas- ing attention in civil engineering. Acoustic emission ...
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Experimental analysis of crack evolution in concrete by the acoustic emission technique
... the acoustic emission (AE) ...of acoustic emissions, was also carried out to describe quantitatively the influence of the relative notch depth on the fracture ...
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Acoustic emission monitoring of medieval towers considered as sensitive earthquake receptors
... 3.1 Acoustic emission equipment and signals analysis The cracking processes taking place in some portions of the masonry structures were then monitored using the AE tech- ...
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Acoustic Emission of a Single Bubble Activities
... Abstract-----The phenomena of bubble in a two-phase gas liquid system is encountered in many industries such as nuclear reactor, hydro-station, chemical, pharmaceutical, liquid-piping transportation and petrochemical. As ...
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Tool Condition Monitoring using Acoustic Emission and Vibration Signature in Turning
... the acoustic emission ...the acoustic emission and vibration signature would be an effective ...an acoustic emission sensor and a tri- axial accelerometer have been placed on the ...
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Automatic detection of thermal damage in grinding process by artificial neural network
... and acoustic emission can help a lot in obtaining parameters and thus avoiding damages caused by ...the acoustic emission signal for each grinding ...
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Analysis of forecasting capabilities of ground surfaces valuation using artificial neural networks
... The acoustic emission and power signals were captured by a National Instruments data acquisition board (model PCI-6111) with 12 bits precision, with maximum sampling frequency of 5 million samples per ...
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Acoustic-oceanographic data fusion for prediction of oceanic acoustic elds
... underwater acoustic signal processing techniques, and has faced a significant technological development in the last years, in terms of acoustic emission and reception ...the Acoustic ...
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Mat. Res. vol.7 número3
... The acoustic emission (AE) was expressed in Volts (rms), and measured with Sensis BM12 equipment, with the acous- tic emission sensor placed near the workpiece ...
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Digital Signal Processing for the Detection and Location of Acoustic and Electric Signals from Partial Discharges
... the acoustic signals the difficulties associated to the acquisition are low signal levels and signal waveform distortion due to the path ...the acoustic emission, it is attenuated when crosses the ...
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J. Braz. Soc. Mech. Sci. & Eng. vol.28 número1
... of acoustic emission signals in order to detect thermal damages in grinding ...The acoustic emission signals were acquired from a fixed sensor placed on the workpiece ...raw acoustic ...
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Liquid rocket combustion chamber acoustic characterization
... as acoustic pressure, particle displacements ...the acoustic plane waves is that they have characteristics similar to those presented by the longitudinal waves propagating in a ...
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GENSET Diesel Engine Design Optimization for CPCB- II Emission Norms Using Cost Effective Techniques
... From the figure it can be seen clearly that NOX + HC limits are far below the CPCB Stage II Emission norms. Emission limits for NOX + HC are decreased by 48.73 % as compared to baseline limits. The reason ...
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Rev. Bras. . vol.72 número1 en a09v72n1
... Acoustic reflex analysis -- as a possibility of investi- gating the efferent pathway -- depends on the integrity of the auditory afferent and efferent pathways. The auditory sensitization procedure has been used ...
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