Results 1 to 10 of about 275,126 (317)

Asymptotic series solution of variational stokes problems in planar domain with crack-like singularity

open access: yesApplied Mathematics in Science and Engineering, 2022
A class of nonlinear variational problems describing incompressible fluids and solids by stationary Stokes equations given in a planar domain with a crack (infinitely thin flat plate in fluids) is considered.
Victor A. Kovtunenko, Kohji Ohtsuka
doaj   +1 more source

Colapso de la cubierta metálica de un polideportivo; patologías singulares y recurrentes

open access: yesRevista ALCONPAT, 2012
RESUMEN En ocasiones se producen patologías que aun siendo singulares como es el caso que se presenta, ya se han producido anteriormente, y pese a ello, no se ha sabido transmitir las enseñanzas de esas tipologías de daños, y vuelven a repetirse.
V. Alegre, V. Ródenas, S. Villalba
doaj   +1 more source

PECULIARITIES OF THE SURFACE FLAW DETECTION BY ELASTIC WAVES SIMULATED BY PULSE-LASER RADIATION

open access: yesПриборы и методы измерений, 2016
Laser pulse simulation of the surface waves and its receiving by contact piezoelectric probes is perspective direction to detect surface defects. The aim of this work was to determine optimal conditions for detection of the real fatigue cracks of nearly ...
А. R. Bаеv   +3 more
doaj   +1 more source

Multi-cracks Modeling in Reflective Cracking [PDF]

open access: yes, 2012
Reflective cracking is a major concern for engineers facing the problem of road maintenance and rehabilitation. The problem appears due to the presence of cracks in the old pavement layers that propagate into the pavement overlay layer when traffic load passes over the cracks and due to the temperature variation. The stress concentration in the overlay
Pais, Jorge   +2 more
openaire   +3 more sources

Machine-Learning-Based Real-Time Photoacoustic Surface Crack Detection

open access: yesEngineering Proceedings, 2023
Photoacoustic imaging is commonly utilized in biomedical research due to its capability to provide the functional and structural details of imaging targets, featuring optical contrast and ultrasound resolution.
Abdulrhman Alshaya   +2 more
doaj   +1 more source

Stress-strain state of bending reinforced beams with cracks

open access: yesИнженерно-строительный журнал, 2020
The work is dealing with studying the stress-strain state of bending pre-stressed concrete beams with cracks. The problems of determining preliminary stresses in a reinforced concrete element, determining the moment of crack formation, and determining ...
Omirkhan Khabidolda   +5 more
doaj   +1 more source

Elucidation of Mechanism of Brick Wall Frost Damage at JR Kitami Station

open access: yesJournal of MMIJ, 2016
In this study, we conducted a follow-up survey of brick cracking on a brick wall in the parking space of JR Kitami Station and installed temperature sensors on the surface of the brick wall in order to measure changes in the brick wall temperature during
Dai NAKAMURA   +5 more
doaj   +1 more source

Concrete Crack Monitoring Using a Novel Strain Transfer Model for Distributed Fiber Optics Sensors

open access: yesSensors, 2020
In this paper, we study the strain transfer mechanism between a host material and an optical fiber. A new analytical model handling imperfect bonding between layers is proposed.
Antoine Bassil   +3 more
doaj   +1 more source

Research on Reconstruction and Quantitative Characterization of Three-dimensional Cracks in Pyrolysis Anthracite

open access: yesTaiyuan Ligong Daxue xuebao, 2021
In order to study the effect of temperature on the permeability of anthracite coal cracks, Jincheng anthracite coal was used as the research object, and the pyrolysis CT scan of Jincheng anthracite coal under different temperatures was performed by using
Yong WANG   +3 more
doaj   +1 more source

Preliminary Study on Assessing Delaminated Cracks in Cement Asphalt Mortar Layer of High-Speed Rail Track Using Traditional and Normalized Impact–Echo Methods

open access: yesSensors, 2020
The severe deterioration of a cement asphalt (CA) mortar layer may lead to the movement of the upper concrete slab and impair the safety of the speedy train.
Ying-Tzu Ke   +5 more
doaj   +1 more source

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