Aggregate Roundness Classification Using a Wire Mesh Method

Herein, we suggest a wire mesh method to classify the particle shape of large amounts of aggregate. This method is controlled by the tilting angle and opening size of the wire mesh. The more rounded the aggregate particles, the more they roll on the tilted wire mesh. Three different sizes of aggregate: 11–15, 17–32, and 33–51 mm were used for assessing their roundness after classification using the sphericity index into rounded, sub-rounded/sub-angular, and angular. The aggregate particles with different sphericities were colored differently and then used for classification via the wire mesh method. The opening sizes of the wire mesh were 6, 11, and 17 mm and its frame was 0.5 m wide and 1.8 m long. The ratio of aggregate size to mesh-opening size was between 0.6 and 8.5. The wire mesh was inclined at various angles of 10°, 15°, 20°, 25°, and 30° to evaluate the rolling degree of the aggregates. The aggregates were rolled and remained on the wire mesh between 0.0–0.6, 0.6–1.2, and 1.2–1.8 m depending on their sphericity. A tilting angle of 25° was the most suitable angle for classifying aggregate size ranging from 11–15 mm, while the most suitable angle for aggregate sizes of 17–32 and 33–51 mm was 20°. The best ratio for the average aggregate size to mesh-opening size for aggregate roundness classification was 2.

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The Wire Mesh

Techniques in Hand and Upper Extremity Surgery ◽

10.1097/bth.0b013e31815d69b5 ◽

2008 ◽

Vol 12 (2) ◽

pp. 92-93 ◽

Cited By ~ 1

Author(s):

Prashantha Kesari ◽

Mukund Jagannathan

Keyword(s):

Wire Mesh ◽

The Wire

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Performance of Appended Wire Mesh Packing in Sieve Tray Distillation Column of Ethanol-Water System

Modern Applied Science ◽

10.5539/mas.v9n7p148 ◽

2015 ◽

Vol 9 (7) ◽

pp. 148

Author(s):

Fadlilatul Taufany ◽

Nonot Soewarno ◽

Melvina Eliana Sutanto ◽

Indi Raisa Girsang

Keyword(s):

Distillation Column ◽

Water System ◽

Interfacial Area ◽

Wire Mesh ◽

Water Mixture ◽

Valve Tray ◽

Sieve Tray ◽

Distillation System ◽

Preliminary Study ◽

The Wire

For the separation process in liquid-liquid mixture such as ethanol-water mixture, a sieve tray distillation columnis an alternatif for affordable process and maintenance. However to date, this sieve tray system is still currentlyhaving a lower Murphee efficiency and smaller interfacial area, as compared to other tray system, that is, either abubble cap or valve tray. Therefore it is of important to optimize the performance of sieve tray distillation bymeans of adding the wire mesh packing on that tray, as being the aim of the present study. This study isconducted by using a batch sieve tray distillation system, where the wire mesh packing is added on the third traythat is calculated from the top of the column, to avoid flooding inside the column. Here the resulting fermentedmolasses of containing a 10% volume of ethanol is used as a mixture distillation feed. The height of the wiremesh packing being studied is varied as 5 cm, 3 cm, and 2 cm. Our results showed that the Murphee efficiencyobtained by the variation of the packing height of 5 cm, 3 cm, 2 cm and without packing were 73.5%, 66.27%,56.86%, and 46.7% respectively, and were increased by subsequent level of the packing height. Thecorresponding hydrodynamic properties of this appended packing sieve tray distillation by means of theinterfacial area were 11.88 cm2/cm3, 0.48 cm2/cm3, and 0.32 cm2/cm3, while its pressure drop measured from thewater manometer height were 38.33 cm H2O/m, 30 cm H2O/m, 10 cm H2O/m for the packing height of 5 cm, 3cm, 2 cm height, respectively. The increasing of the performance of appended packing sieve tray distillation bymeans of the Murphee efficiency is explained by the increasing of the interfacial area for vapour-liquid than thetray itself. This preliminary study is expected to be a pioneer study of strategy to increase the performance ofconventional sieve tray distillation that is known as a kind of affordable distillation process.

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Failure Investigation on Rusty Mesh Strainer of Petrochemical Plant

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.795.488 ◽

2013 ◽

Vol 795 ◽

pp. 488-491 ◽

Cited By ~ 1

Author(s):

Shaiful Rizam Shamsudin ◽

Mohd Harun ◽

Mohd Arif Anuar Mohd Salleh ◽

Hafizal Yazid ◽

Mohd Noor Mazlee

Keyword(s):

Human Error ◽

Good Condition ◽

Wire Mesh ◽

Petrochemical Plant ◽

Root Cause ◽

Failure Investigation ◽

Error Factor ◽

The Wire ◽

The Impact ◽

Filter Mesh

The wire material of filter mesh is made of 304 grade stainless steel. The failure to run properly was due to the impact of burst and torn. The client also expects that the failure was due to corrosion problems. A visual inspection on the strainer mesh was found covered by brownish rust layers and some scratches at the damaged area. The rusty wire mesh that was washed with pickling acid showed a clean and smooth surface. Energy dispersive spectroscopy (EDS) examination of the rusty wire mesh surface indicated that it was only normal oxide precipitates. Thus, it's proven that there were no signs of severe corrosion attack on the failed sample. SEM micrographs showed the unidirectional scratch effects exist in the damaged area. The fractography study was found there was a typical ductile structure on the fracture surface of the wire. It is proven that the wire mesh was actually still in good condition and has not experienced any embrittlement problems as if it exposed to any corrosive environment. The root cause of the failure is shown by the effect of scratches in which it is usually caused by a mechanical forceful push by a hard object or in other words, it is caused by human error factor.

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Effect of wire diameter on turbulence intensity of flow passing through the wire mesh

The Proceedings of the Fluids engineering conference ◽

10.1299/jsmefed.2018.os5-26 ◽

2018 ◽

Vol 2018 (0) ◽

pp. OS5-26

Author(s):

Ayumu INAGAKI ◽

Naoto WATANABE ◽

Hidemi YAMADA

Keyword(s):

Turbulence Intensity ◽

Wire Diameter ◽

Wire Mesh ◽

The Wire

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Basic Study on Deformation Evaluation of Steel Wire Mesh for Rational Gabion Structure Design

EPI International Journal of Engineering ◽

10.25042/epi-ije.082019.04 ◽

2019 ◽

Vol 2 (2) ◽

pp. 109-115

Author(s):

Hiroshi Nakazawa ◽

Tsuyoshi Nishi ◽

Hiroyuki Kurihara ◽

Daisuke Suetsugu ◽

Tadashi Hara

Keyword(s):

Design Method ◽

Steel Wire ◽

Tensile Tests ◽

Structure Design ◽

Wire Mesh ◽

Deformation Characteristics ◽

Basic Study ◽

Tensile Direction ◽

The Wire ◽

Wire Meshes

Gabion structures are used in a variety of ways in Japan and around the world because they allow for the creation of simple structures at highly reasonable construction costs and completion periods. Previous earthquake damage surveys have shown that, in many cases, gabion structures did not collapse even though deformation was allowed, and have demonstrated that the wire mesh used in their construction has a high confinement effect on the stones filling the gabion. Despite this, gabions have not been actively utilized, nor have they been used to construct permanent structures in Japan because the design and construction of such structures are based on experience, and a standardized design method has not been developed. Hence, in order to facilitate development a design method for gabion-based structures, we must first go back to the basics and establish a detailed explanation of the wire mesh deformation mechanism of such structures. In this study, we performed tensile tests on wire meshes of different shapes in order to determine their strength and deformation characteristics and then conducted numerical analyses using the results obtained. The tensile tests revealed that deformation characteristics differed depending on the mesh shape and tensile direction. We also showed that the direction in which the tension acts and the mesh nodes are important, and that the test results could be reproduced via numerical analysis with the finite element method by using beam elements.

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Reliability and validity of food portion size estimation from images using manual flexible digital virtual meshes

Public Health Nutrition ◽

10.1017/s1368980017004293 ◽

2018 ◽

pp. 1-7 ◽

Cited By ~ 3

Author(s):

Alicia Beltran ◽

Hafza Dadabhoy ◽

Courtney Ryan ◽

Ruchita Dholakia ◽

Janice Baranowski ◽

...

Keyword(s):

Reliability And Validity ◽

Portion Size ◽

Wire Mesh ◽

Self Report ◽

Assessment Procedure ◽

Size Estimation ◽

Rater Reliability ◽

True Value ◽

Portion Sizes ◽

The Wire

Abstract Objective The eButton takes frontal images at 4s intervals throughout the day. A three-dimensional manually administered wire mesh procedure has been developed to quantify portion sizes from the two-dimensional images. The present paper reports a test of the inter-rater reliability and validity of use of the wire mesh procedure. Design Seventeen foods of diverse shapes and sizes served on plates, bowls and cups were selected to rigorously test the portion assessment procedure. A dietitian not involved in inter-rater reliability assessment used standard cups to independently measure the quantities of foods to generate the ‘true’ value for a total of seventy-five ‘served’ and seventy-five smaller ‘left’ images with diverse portion sizes. Setting The images appeared on the computer to which the digital wire meshes were applied. Subjects Two dietitians and three engineers independently estimated portion size of the larger (‘served’) and smaller (‘left’) images for the same foods. Results The engineers had higher reliability and validity than the dietitians. The dietitians had lower reliabilities and validities for the smaller more irregular images, but the engineers did not, suggesting training could overcome this limitation. The lower reliabilities and validities for foods served in bowls, compared with plates, suggest difficulties with the curved nature of the bowls. Conclusions The wire mesh procedure is an important step forward in quantifying portion size, which has been subject to substantial self-report error. Improved training procedures are needed to overcome the identified problems.

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The Litter and Wire System of Housing for Laying Hens

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600025502 ◽

1993 ◽

Vol 1993 ◽

pp. 228-228

Author(s):

D M Alvey ◽

S A Tucker

Keyword(s):

Laying Hens ◽

Stocking Density ◽

Wire Mesh ◽

Floor Area ◽

Nest Boxes ◽

Wood Shavings ◽

Laying Performance ◽

The Wire ◽

Wire System ◽

Feeder Space

The litter and wire system of housing for laying hens is a compromise between an all litter system (maximum stocking density 7 birds/m2) and the perchery system (maximum stocking density 25 birds/m2).The wire areas are usually constructed over a droppings pit.The current EC Egg Marketing Regulations allow a proportion of the wire area to be Included as perching area and this permits the stocking density to be increased to 11.7 birds/m2, as long as a minimum of 53% of the floor area is wire.In 2 studies at Gleadthorpe between 1990-92 the laying performance, behaviour and welfare of laying hens in a litter and wire system were evaluated. The pen, with a floor area of 10.0m x 7.67m contained 3 areas of wood shavings litter. The litter areas were separated longitudinally by two, 250 mm high, raised platforms of wire mesh built over a droppings pit. The wire mesh covered 57% of the floor area. Chain feeder and nipple drinker lines were positioned over the wire area. Each bird had 95 mm of feeder space and nipple drinkers were provided at a ratio of 1 per 6 birds.Two tiers of “Astroturf” lined, rear roll-away nestboxes were provided, one per 5.9 birds along each of the longest sides of the unit. During the first month of lay, nest boxes were “managed” to discourage overnight roosting.

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Experimental Investigations on the Effect of Flow Area of Nano Coated Catalytic Converter

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.984-985.471 ◽

2014 ◽

Vol 984-985 ◽

pp. 471-475

Author(s):

Nattan Ravichandiran ◽

Ramalingam Senthil ◽

Govindasamy Mohan

Keyword(s):

Air Pollution ◽

Global Warming ◽

Combustion Engine ◽

Catalytic Converter ◽

Vital Role ◽

Wire Mesh ◽

Experimental Investigations ◽

Flow Area ◽

The World ◽

The Wire

Now a days the global warming and air pollution are big issue in the world. The more amount of air pollution is due to emissions from an internal combustion engine. Catalytic converter plays a vital role in reducing harmful gases. In this study, the nanocoated catalytic converter efficiency was focused. The flow area of catalytic converter plays a vital role in the conversion of the harmful gases NOx, CO & UHC. The wire mesh coated with Alumina and Ti02 was the conversion medium. By varying the length of the wire mesh, the flow area was changed. The length of the wire mesh substrate was varied by 100mm, 150mm and 200mm. It was experimentally found that the increase in flow area reduces the exhaust emissions smoke, CO, HC and NOx.

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