Searched for: subject:"image%5C+analysis"
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Zhang, W. (author)
The assessment of the potentially destructive impacts of subaqueous landslides on offshore pipelines is required when the pipeline route passes through zones with a risk of mass movements. Therefore, quantifying and evaluating the ultimate load/pressure acting on the pipeline is one of the key factors in geotechnical safety design of the...
doctoral thesis 2020
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Wong, H.S. (author), Poole, A.B. (author), Wells, B. (author), Eden, M. (author), Barnes, R. (author), Ferrari, J. (author), Fox, R. (author), Yio, M.H.N. (author), Copuroglu, Oguzhan (author)
Water to cement (w/c) ratio is usually the most important parameter specified in concrete design and is sometimes the subject of dispute when a shortfall in concrete strength or durability is an issue. However, determination of w/c ratio in hardened concrete by testing is very difficult once the concrete has set. This paper presents the...
journal article 2020
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Shrestha, P. (author), Groves, R.M. (author)
Composite materials are susceptible to barely visible impact damages (BVID) due to low-velocity impact. Therefore, an automated damage detection and quantification technique is highly desirable for quick inspection of large number of composite structures. Among various different non-destructive techniques (NDTs), active thermography NDT can...
conference paper 2019
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Mager, Tino (author), Khademi, S. (author), Siebes, R.M. (author), Hein, C.M. (author), de Boer, Victor (author), van Gemert, J.C. (author)
Built form dominates the urban space where most people live and work and provides a visual reflection of the local, regional and global esthetical, social, cultural, technological and economic factors and values. Street-view images and historical photo archives are therefore an invaluable source for sociological or historical study; however,...
book chapter 2019
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Guo, Y. (author), Markine, V.L. (author), Zhang, X. (author), Qiang, Weile (author), Jing, Guoquig (author)
The performance and deformation of ballast bed are significantly influenced by the particle morphology (size and shape), the rheology (translation and rotation), and the degradation (breakage and abrasion). Regarding the ballast particle morphology, the ballast particle size is generally measured by sieving and described with the Particle Size...
review 2019
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di Cicco, F. (author), Wijntjes, M.W.A. (author), Pont, S.C. (author)
To understand the key image features that we use to infer the glossiness of materials, we analyzed the pictorial shortcuts used by 17th century painters to imitate the optical phenomenon of specular reflections when depicting grapes. Gloss perception of painted grapes was determined via a rating experiment. We computed the contrast, blurriness,...
journal article 2019
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Guo, Y. (author), Markine, V.L. (author), Qiang, Weile (author), Zhang, Hui (author), Jing, Guoqing (author)
Higher speed, more freight and frequent maintenance increase ballast degradation and reduce the ballast lifespan. To reduce ballast degradation, crumb rubber used as buffering aggregates in ballast bed is relatively unexplored and needs more studies, because using it has the advantage of reusing the waster rubber and absorbing the noises. The...
journal article 2019
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Guo, Y. (author), Markine, V.L. (author), Song, Jianing (author), Jing, Guoqing (author)
Ballast track is the most widely used track for the railway transport, and ballast bed plays a significant role to provide resistances during train operation. Generally, the ballast bed consists of crushed stones. To achieve the mitigation of ballast degradation, the first priority is to describe the degradation development and to study its...
journal article 2018
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Zuo, Y. (author), Ye, G. (author)
The pore structure of alkali-activated slag has a significant influence on its performance. However, the literature shows insufficient studies regarding the suitability of different techniques for characterizing the pore structure and the influences of Na2O and curing age on pore structure development. In pursuit of a better understanding, the...
journal article 2018
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Chavarrias Borras, V. (author), Blom, A. (author), Orru, C. (author), Martín-Vide, Juan Pedro (author), Viparelli, Enrica (author)
Laboratory experiments were conducted on a sand-gravel Gilbert delta to gain insight on its dynamics under varying base level. Base level rise results in intensified aggradation over the topset, as well as a decrease in topset slope and topset surface coarsening, the signals of which migrate in an upstream direction. Preferential deposition...
journal article 2018
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Mahajan, V.V. (author), Padding, J.T. (author), Nijssen, Tim M.J. (author), Buist, Kay A. (author), Kuipers, J. (author)
Fluidization is widely used in industries and has been extensively studied, both experimentally and theoretically, in the past. However, most of these studies focus on spherical particles while in practice granules are rarely spherical. Particle shape can have a significant effect on fluidization characteristics. It is therefore important to...
journal article 2018
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Susanto, A. (author), Koleva, D.A. (author), van Breugel, K. (author), van Beek, C. (author)
This work reports on the development of microstructural and mechanical properties of mortar cubes under the synergetic action of stray current and various environmental/curing conditions. The study refers to specimens cured for 24h only, followed by a 112 days period of partial or full submersion in water or alkaline medium. Additionally,...
journal article 2017
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Moreno-Juez, J. (author), Artoni, R. (author), Cazacliu, B. (author), Khoury, E. (author)
The improvement of inline mixer measurements is imposed in a growing concrete industry employing increasingly complex manufacturing processes and materials. Improper mixing, water content estimation and fresh properties control are one of the most important concerns of concrete manufacturers. These problems have increased in recent decades due...
conference paper 2017
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de Rooij, Mario R. (author), França de Mendonça Filho, F. (author)
In this article a trip is taken to characterize concrete through its hardened cement paste based on its microstructure. Optical microscopy is coupled to advanced image analysis, as well as statistical data analysis to characterize heterogeneous concrete material. The article takes a closer look at the determination of the w/c ratio through the...
conference paper 2017
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Chen, J. (author), Liu, Xian (author), Ye, G. (author)
Microcracks play vital roles in the prediction of the service life of concrete structure. Because microcracks in concrete structure are the preferential ingression channels for aggressive ions, e.g., chloride, sulphate, etc. However, microcracks have potentials to self-heal autogenously due to the continuous hydration of unhydrated cement,...
conference paper 2016
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Sherzer, G. (author), Gao, P. (author), Ye, G. (author), Gal, E. (author)
The heterogeneity of the concrete may be considered on different size scales of observation, ranging from the atomistic scale (10-10m), characterized by the behavior of crystalline particles of hydrated Portland cement, to the macroscopic scale (101 m), where concrete has traditionally been considered homogeneous. The multiscale framework we are...
conference paper 2016
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Orrú, C. (author)
The main objective of this project is to develop new measuring techniques for providing detailed data on sediment sorting suitable for sand-gravel laboratory experiments. Such data will be of aid in obtaining new insights on sorting mechanisms and improving prediction capabilities of morphodynamic models. Two measuring techniques have been...
doctoral thesis 2016
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Copuroglu, O. (author)
Plane and crossed polarization are the two standard light modes in polarized light microscopy that are widely used to characterize crystalline and amorphous phases in cement-based materials. However, the use of the crossed polarized light mode has been found to be restrictive for studying birefringent phases quantitatively due to the extinction...
journal article 2016
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Stroeven, P. (author)
Path length measuring is a relevant engineering problem. Leonardo Da Vinci designed for the military appropriate equipment, the podometer, to do so. Modern equipment such as step meters and map meters are quite similar to Da Vinci?s design, despite geometrical statistical - stereological - methods based on theorems of Cauchy and Buffon that were...
conference paper 2015
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Bonifazi, G. (author), Capobianco, G. (author), Serranti, S. (author), Eggimann, M. (author), Wagner, E. (author), Di Maio, F. (author), Lotfi, S. (author)
Aim of this work was to investigate the microstructure of the Interfacial Transition Zone (ITZ) between cement paste and aggregate in concrete utilizing Scanning Electron Microscope (SEM) in order to identify possible effects on the ITZ related to different recipes and production parameters. SEM is an important tool to carry out concrete, cement...
conference paper 2015
Searched for: subject:"image%5C+analysis"
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