Results 21 to 30 of about 9,272 (117)

Study on quantitative detection of fatigue cracks for hollow axles on high-speed trains by the total focus method

open access: yes机车电传动, 2022
Among the important components on high-speed trains, hollow axles are detected from the inner bore surface for transverse fatigue cracks on the outer surface by the conventional ultrasonic technique, as a measure to ensure the operation safety of high ...
HUANG Yongcong   +2 more
doaj  

Research on the Propagation Law of Temperature-Induced Reflective Cracks in Semi-Rigid Base Asphalt Pavement

open access: yesBuildings
In order to solve the problem of reflection cracks in semi-rigid base asphalt pavement, a study of temperature-type reflection crack expansion is carried out according to the typical climatic characteristics of Guilin, Guangxi Province.
Feng Chen, Aijun Yue
doaj   +1 more source

An analytical method for free vibration of multi cracked and stepped nonlocal nanobeams based on wave approach

open access: yesResults in Physics, 2018
Various discontinuities and boundary conditions affect natural frequencies of nanobeams. In this paper, free lateral vibration of Euler-Bernoulli nanobeam with multiple discontinuities is studied.
Masih Loghmani   +1 more
doaj   +1 more source

THE EFFECT OF RECLAIM TIRE RUBBER AS ADDITIVE IN MINIMIZING REFLECTIVE CRACKING

open access: yesDiyala Journal of Engineering Sciences, 2010
The rehabilitation of cracked pavement by overlaying, without any improvement, is rarely a durable solution, as the cracks rapidly propagate through the new asphalt layer.
HANAA KHALEEL A. AL-BAITI
doaj   +1 more source

Characterization Method of Surface Crack Based on Laser Thermography

open access: yesIEEE Access, 2021
The characterization of micro cracks on metal surface plays an important role in the process of manufacturing and using, which has attracted a lot of attention.
Jiaqi Liu   +4 more
doaj   +1 more source

Experimental study on damage and seepage features of gas bearing sandstone under different impact velocities loading

open access: yesMeitan xuebao, 2023
Using an impact damage-percolation experimental system for gas bearing coal or rock and an industrial CT scanning system, the authors design and carry out a series of dynamic compression-seepage tests for loading at different impact velocities under ...
Dengke WANG   +6 more
doaj   +1 more source

Enhancing crack detection in railway tracks through AI-optimized ultrasonic guided wave modes

open access: yesBiomimetic Intelligence and Robotics
The utilization of ultrasonic guided wave technology for detecting cracks in railway tracks involves analyzing echo signals produced by the interaction of cracks with guided wave modes to achieve precise crack localization, which is extremely important ...
Jianjun Liu, Huan Luo, Han Hu, Jian Li
doaj   +1 more source

High-Q, directional and self-assembled random laser emission using spatially localized feedback via cracks

open access: yesAPL Photonics, 2020
Lasers based on Fabry–Pérot or whispering gallery resonators generally require complex fabrication stages and sensitive alignment of cavity configurations.
Itir Bakis Dogru-Yuksel   +6 more
doaj   +1 more source

Microwave Non-Destructive Testing for Delamination Detection in Layered Composite Pipelines

open access: yesSensors, 2021
Microwave imaging and defectoscopy are promising techniques for dielectric composite evaluation. Their most significant advantage is their relatively high penetration depth.
Przemysław Sobkiewicz   +2 more
doaj   +1 more source

Dynamic characteristics and anti-burst mechanism of pre-drilled coal under high strain rate

open access: yesMeitan xuebao
Pressure relief through coal seam drilling is a common method in coal mine rockburst prevention, with its effectiveness linked to the mechanical properties of coal.
Aiwen WANG   +7 more
doaj   +1 more source

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