Results 241 to 250 of about 1,232,993 (290)

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

Deep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang, Guoyao Xu, Liyuan Liu, Yao Zhang, Sitao Zhu, Hongyang Chu, Kaikai Zhao   +6 more
wiley   +1 more source

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

Deep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi, Shimin Wang, Chang Liu, Zhiyu Lin, Chuan He   +4 more
wiley   +1 more source

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

Deep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu, Dongming Zhang, Mingliang Zhou, Shengjun Duo, Hongwei Huang   +4 more
wiley   +1 more source

Recent Advance for PVDF Based Flexible Piezoelectric Sensors

EcoEnergy, EarlyView.
This review focus on the structural regulation of PVDF via boundary confinement, blending regulation, electric‐field‐assisted orientation, and chemical modification for flexible piezoelectric sensors. ABSTRACT The rapid advancement of flexible electronics, wearable devices, and biomedical engineering has spurred increasing demand for sensor materials ...
Chaoran Tan, Aokai Yang, Yuyang Ling, Meilin Liu, Liang Huang   +4 more
wiley   +1 more source

Linking international technical specifications for acoustic characterization of marine energy converter sounds with environmental compliance criteria. [PDF]

Sci Rep
Haxel J, Zang X, McVey J, Chicco C, Cotter E, Picciulin M, Staines G.   +6 more
europepmc   +1 more source

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Acoustic Emission

Non-Destructive Testing, 1972
Description The Symposium on Acoustic Emission was presented at the December Committee Week of ASTM held in Bal Harbour, Florida, 7-8 December 1971. The ASTM Publications Committee sponsored the symposium. R. G. Liptai, Lawrence Radiation Lab., presided as symposium chairman, and D. O. Harris and C. A.
RG Liptai, DO Harris, CA Tatro
openaire   +2 more sources

Acoustic emission in ceramic actuators

Ferroelectrics, 1988
Abstract Two types of Acoustic Emission (AE) are possible in piezoelectric/electrostrictive actuators. One is the so-called normal AE, occurring when a piezoelectric actuator is driven by a bipolar electric field, and the other is an abnormal AE, occurring during actual breakdown of the actuator.
Terukiyo Hirose, Kenji Uchino
openaire   +1 more source

A cochlear model for acoustic emissions

The Journal of the Acoustical Society of America, 1988
Variability in cochlear emission properties among different species, particularly humans and small mammals, and within individuals in the same species, is modeled by a cochlear nonlinear transmission line. The difference between humans and animals is largely explained by a lower cochlear input impedance in human ears than in cats, gerbils, or ...
M, Furst, M, Lapid
openaire   +2 more sources

Acoustic Emission

NDT International, 1979
M Ahmed, R W B Stephens
  +4 more sources

Acoustic Emission: Theory and Practice

NDT & E International, 1988
ABSTRACT In the 23 years since the first documented use of acoustic emission (AE) as an NDT technique, there have been considerable advances in the theoretical understanding of how stressed defects generate elastic waves and how these waves propagate to transducers attached to the specimen.
openaire   +1 more source