Results 11 to 20 of about 9,272 (117)

Heavy maintenance of concrete paved roads using the regional roads No. 102 and No. 142 as an example

open access: yesRoads and Bridges, 2019
The paper describes heavy maintenance projects carried out on two regional roads located in the West Pomerania region of Poland. The projects started in 2017 on two sections of these roads. Completely different methods were used on these two sections. On
Paweł Mieczkowski   +2 more
doaj   +1 more source

Characterisation of a FPGA-based multi-view stereo system with linear measuring arrangement

open access: yesMeasurement: Sensors, 2021
In recent years, stereoscopic image processing algorithms have gained importance for a variety of applications. To capture larger measurement volumes, multiple stereo systems are combined into a multi-view stereo system (MVS).
Christina Junger   +3 more
doaj   +1 more source

Influence of Crack Spacing/Layer Thickness Value on Reflection Crack Propagation Mechanism Under Low Temperatures

open access: yesFrontiers in Earth Science, 2022
The damage of asphalt concrete pavement (AC pavement) structure caused by reflection crack is an urgent problem in many areas of China, especially in cold regions of China, so it is necessary to study how to reduce the reflective cracking and prevent the
Chunyan Bao   +12 more
doaj   +1 more source

Multiple Reflective Cracks in Semirigid Base Asphalt Pavement under Traffic Load Using XFEM

open access: yesAdvances in Civil Engineering, 2022
This paper built a three-dimensional layered structure model of semirigid base asphalt pavement with single and double transverse reflective cracks based on the Extended Finite Element Method and fatigue fracture theory.
Lei Guo   +3 more
doaj   +1 more source

Use of Surface Acoustic Waves for Crack Detection on Railway Track Components—Laboratory Tests

open access: yesApplied Sciences, 2022
The present work investigates the technical feasibility of a condition monitoring setup aiming at the detection of gauge corner cracks (aka head checks) in pearlitic railway rails, using a wayside (i.e., stationary) setup with surface acoustic waves (SAW)
Claudia Gruber   +4 more
doaj   +1 more source

Surface Crack Monitoring by Rayleigh Waves with a Piezoelectric-Polymer-Film Ultrasonic Transducer Array

open access: yesSensors, 2023
This paper presents a method for measuring surface cracks based on the analysis of Rayleigh waves in the frequency domain. The Rayleigh waves were detected by a Rayleigh wave receiver array made of a piezoelectric polyvinylidene fluoride (PVDF) film and ...
Xiaotian Li   +8 more
doaj   +1 more source

Ultrasound Imaging of Pipeline Crack Based on Composite Transducer Array

open access: yesChinese Journal of Mechanical Engineering, 2018
Cracks, especially small cracks are difficult to be detected in oil and gas transportation pipelines buried underground or covered with layers of material by using the traditional ultrasonic inspection techniques.
Shou-Peng Song, Ying-Jie Ni
doaj   +1 more source

Development of an indoor test method for evaluating the anti-reflection crack performance of asphalt overlay

open access: yesCase Studies in Construction Materials, 2023
Fatigue tests conducted in an indoor environment for evaluating the anti-reflection crack performance of asphalt overlay are associated with large specimen size and significant dispersion in the test results.
Han-geng Sun
doaj   +1 more source

Crack Extraction for Polycrystalline Solar Panels

open access: yesEnergies, 2021
Crack extraction of solar panels has become a research focus in recent years. The cracks are small and hidden. In addition, there are particles of irregular shape and size on the surface of the polycrystalline solar panel, whose reflection position and ...
Bai Xue   +6 more
doaj   +1 more source

Minimizing The Phenomena of Reflection Cracks. A Review

open access: yesمجلة النهرين للعلوم الهندسية
Reflective cracking is a serious issue that Adversely influences the performance and longevity of asphalt overlays over deteriorated pavements. This review Looks for the Technologies which used to reduce the reflection cracks propagation by insert a new
Sameer A. Jasim   +2 more
doaj   +1 more source

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