Application of ECT to solid concentration measurements during granular flow in a rectangular model silo

Niedostatkiewicz, Maciej; Tejchman, J.; Grudzień, Krzysztof; Chaniecki, Zbigniew

doi:10.1016/j.cherd.2010.01.034

Cited by 21 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the techniques available for capturing the qualitative information about the stress field within a soil makes use of photo-elastic properties of certain transparent materials imitating soils [20][21][22][23][24][25][26]. Digital photography in turn enables obtaining displacement and hence strain maps within the entire field of view by a process known as DIC or PIV (Niedostatkiewicz et al, in preparation) [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Combined Full Field Technique For Analysing Granular Materialsmentioning

confidence: 99%

“…Digital photography in turn enables obtaining displacement and hence strain maps within the entire field of view by a process known as DIC or PIV (Niedostatkiewicz et al. , in preparation) [6–18].…”

Section: Combined Full Field Technique For Analysing Granular Materialsmentioning

confidence: 99%

“…The experimental set‐up applied in this work was described in detail in [15, 20, 21]. Small‐scale tests on granular samples retained by a movable rigid wall were performed in a glass‐sided box (Figure 1A).…”

Section: Experimental Configurationmentioning

confidence: 99%

“…And, as it is broadly accepted that localised deformation controls a global post-peak response of granular material, it is necessary to understand its behaviour within shear zones. It became recently much easier owing to some full field measurement methods based on digital image correlation (DIC) (Niedostatkiewicz et al, in preparation) [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Study on Shear Localisation in Granular Materials Within Combined Strain and Stress Field

Leśniewska

Niedostatkiewicz

Tejchman

2012

Strain

Self Cite

View full text Add to dashboard Cite

The characteristic features of the shear zones formation in deforming granular materials were investigated using particle image velocimetry (PIV), which was combined with a photo‐elastic study of the stress field. Laboratory tests were performed for an active translation of rigid retaining wall. PIV is an optical technique for measuring displacement fields from successive digital images and was employed to analyse experiments on two different granular materials, composed of (1) sand grains and (2) glass granules. The tests on glass granules were supplemented by taking photo‐elastic images in circularly polarised light to gather information on changes in the average stress field, accompanying the specimen deformation. Attention was focused on the effect of the initial density, grain coarseness and magnitude of wall displacement on shear localisation within a strain field and its geometrical relation to some structures found in the stress field.

show abstract

Section: Combined Full Field Technique For Analysing Granular Materialsmentioning

confidence: 99%

Section: Combined Full Field Technique For Analysing Granular Materialsmentioning

confidence: 99%

Section: Experimental Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Study on Shear Localisation in Granular Materials Within Combined Strain and Stress Field

Leśniewska

Niedostatkiewicz

Tejchman

2012

Strain

Self Cite

View full text Add to dashboard Cite

show abstract

“…Vertical velocity distribution during mass flow[23] responsible for the emergent complexity of phenomena during the silo unloading process.1.2 Distribution of material concentration in siloThe concentration changes in granular materials during silo discharging process is very complex due to appearing localization of the deformation in the form of narrow zones of intense shearing[13,16,25,20,12]. The shear zones occur along silo walls and also inside of the flowing, initially dense, granular material in the bin section with very rough walls and in the hopper part of silo, independently of the wall roughness.…”

mentioning

confidence: 99%

Analysis of the Granular Material Concentration Changes During Silo Discharging Process Based on X-Ray Image Analysis

Grudzień

2014

Image Processing &Amp; Communications

View full text Add to dashboard Cite

In the paper is presented methodology of the X-ray image processing application to investigate gravitational flow in rectangular silo model. The proposed normalization procedure of X-ray data allows to visualize the changes of the volume fraction of sand during silo discharging process. The applied procedure of image processing, in contrast to the previously author works, allows to obtained more accurate information about the changes of material distribution level during process. The conducted image analysis simplifies the investigation of mass flow in various area of silo. The obtained results show the different particle behaviour in centre and at silo wall area. The experiments were conducted for different initially level of sand densities and roughness of the silo wall. Visualization of dissimilarity in interaction between the particles and particles, and between particles and the silo walls, even for smooth wall, was the main result of the Xray image analysis, especially for shear zone visualization.

show abstract

Literature Overview

Tejchman

2013

Springer Series in Geomechanics and Geoengineering

View full text Add to dashboard Cite

Application of ECT to solid concentration measurements during granular flow in a rectangular model silo

Cited by 21 publications

References 17 publications

Experimental Study on Shear Localisation in Granular Materials Within Combined Strain and Stress Field

Experimental Study on Shear Localisation in Granular Materials Within Combined Strain and Stress Field

Analysis of the Granular Material Concentration Changes During Silo Discharging Process Based on X-Ray Image Analysis

Literature Overview

Contact Info

Product

Resources

About