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“VISION VIA VIBRATION”-A wearable device for the visually impaired – Guides the blind to pick the objects

The main objective of developing “VISION VIA VIBRATIONS” is to help the visually impaired to actually interact with the environment. The proposed device will integrate a camera to view the user's environment and implement machine learning algorithms to interpret this data as a collection of objects. It will also utilize a novel directional haptic feedback system, enabling interactions with objects

Published by: Soma Prathibha, Pavithra Lakshmi S. P., Mankalaswetha N., Vanmathi V., T. P. Rani

Author: Soma Prathibha

Paper ID: V6I1-1187

Paper Status: published

Published: January 27, 2020

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Research Paper

Investigation of coarse aggregate size effect on compressive strength of C-25 concrete

Ethiopia one of the fastest-growing country in the world so from many sectors of the construction industry is one of them and in the construction industry there are many challenges that are generated during construction activities not identify the aggregate size for concrete have a negative impact on the compressive strength of concrete. So this research have identified the effect of aggregate size on compressive strength of C-25 concrete. This study aims at assessing the effect of aggregate size on compressive strength of C-25 concrete, comparing the result with the standard and to provide solution along with determining workability of concrete made from different sized coarse aggregates. This study has given a vast understanding on the effect of aggregate size on compressive strength of C-25 concrete. Significant to major stakeholders like: consultant, contractor, in order to minimize construction defects, cost, and poor quality of materials during construction which may cause defects and also be a guide for other researches. In order to satisfy the above objectives laboratory tests should have to be conducted. These tests are: Sieve analysis, Slump test, Silt content of sand, Specific gravity and absorption of fine aggregate, Specific gravity and absorption of course aggregate, Moisture content of aggregate and Compressive strength of cubic concrete test. After collecting and analyzing all laboratory results researcher have seen that compressive strength and workability have increased with increasing of aggregate size. The researcher has concluded that Coarse aggregate size is directly proportional to the slump (workability) of fresh concrete with constant water-cement ratio and the Compressive strength of a concrete increases with an increase in coarse aggregate size until it reaches 37.5mm and declines above the 37.5mm. And as per the ES and BS size 37.5mm has a mean of 27.15mpa within 28 days of curing this makes it relatively stronger. Researcher recommend that aggregate size 37.5mm can be used for mass concrete structures and size 19.3mm and 63mm with compressive strength of 23.58mpa and 23.65mpa have average strength and can be used to light buildings and to increase the workability of concrete one should increase maximum aggregate size.

Published by: Wondimagegn Tadesse Borku

Author: Wondimagegn Tadesse Borku

Paper ID: V6I1-1142

Paper Status: published

Published: January 27, 2020

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Research Paper

Causes of defects in building costruction projects and its recommended remedial measures: A case study in Tepi Town, Southern Ethiopia

Building defects is one of the major components of building problems that significantly needed attention. Minor defects can develop into serious ones, causing failure or sudden collapse, endangering lives and becoming more costly to rectify. As the researcher observed, most defects presented on the Tepi town buildings, due to absence of a serious follow-up and maintenance are: cracking, peeling of paint, defects on plastered structures, defects of roof, defects of rainwater goods (downpipes, gutters, and eaves), defects of stair, dampness penetration and vegetable growth on building. Based on the questioners and interview results the most dominant causes of defects in Tepi town is poor quality of materials with the highest mean rank value 4.21 and also other causes are poor workmanship with mean score value 4.05, inadequate supervision 3.73, poor maintenance during defects occurred 3.70, poor construction practices 3.72, Mix design problems 3.66, poor management system 3.68 and dampness problems 3.61 The methodologies would be applied to achieve the objective of the research, data had been taken literature survey, problem identification by field surveying, design of data collection methods observation, interview & questioner ), organized data, data-analyzed and conclusion drawn from the result of data analysis. The researcher concluded that defective in building construction is mostly a result of poor quality of materials, poor workmanship, inadequate supervision, poor maintenance, poor construction practices, and poor management system and most of it can be attributed to poor building materials and poor workmanship. The rate of defective construction can be minimized by the use of quality building materials, competent workmen, proper management system and adequate supervision.

Published by: Wondimagegn Tadesse Borku

Author: Wondimagegn Tadesse Borku

Paper ID: V6I1-1141

Paper Status: published

Published: January 27, 2020

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Research Paper

Comparative study on using different types of sands around Tepi Town, Southern Ethiopia

Concrete is an intimate mixture of Coarse Aggregate, Sand (Fine Aggregate), Cement and Water. In building construction, most of the activities are executed using concrete so that concrete materials quality is important. Construction materials used in construction determine the behavior of the structure and resulted in any types of failures or defects. The objective of this study was to compere different types of sands used in building construction project around Tepi town, specifically to identify different types sands used in Tepi town, to determine engineering properties sands and to compare with standard. The methodologies includes, data collection methods (field observation and laboratory test), and organized data, data-analyzed and conclusion made from the result of data analysis and forwarded recommendations. From site observation, for fine aggregate they used four sand types namely: gambela, dimma, Tepi and Meti sand. Based on the findings, the determined properties of materials includes silt content of sands, 4.64%, 3.85%, 9.26%,11.67%; respectively,Compacted unit weight,1407.94Kg/m3,1498.00Kg/m3,1348.92Kg/m3, 1303.08Kg/m3; and Dimma, Gambella, Tepi and Meti respectively. The compressive strength for concrete in 28th days was 30.3Mpa, 33.8Mpa, 22.91Mpa, and 24.64Mpa, Dimma, Gambella, Meti and Tepi sand respectively by using the similar course aggregate. All the above results were compared with the standard specifications. The researcher recommended that the owner of the project must check the quality of materials, follow up and supervision during construction period. Finally, for consultant, check and approve concrete materials according to the specification.

Published by: Wondimagegn Tadesse Borku

Author: Wondimagegn Tadesse Borku

Paper ID: V6I1-1138

Paper Status: published

Published: January 27, 2020

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Research Paper

Investigation on mechanical and tribological properties of Boron Carbide and CNT reinforced Copper-based composites

The current work focuses on the influence and contribution of multi-walled carbon nanotube (MWCNT) and boron carbide (B4C) to the mechanical and corrosion properties of copper matrix composites. Different weight fractions of nano- B4C and MWCNT-reinforced copper composites were prepared using the ultrasonic-assisted stir casting methodologies. Various tests such as density, tensile, compression, hardness, and corrosion were conducted as per ASTM standards. The addition of reinforcements showed enhancements in the mechanical properties such as tensile strength, compressive strength, hardness and corrosion resistance of the composites due to the uniform dispersion of the secondary reinforcement in the copper matrix and the self-lubricating effect of the MWCNTs. Further, the weight of the composites decreased with the strength characteristics increasing leading to the enhancement in strength to weight ratios of the composite specimens. The effects of the nanoparticle distribution in the matrix and the dispersion of the composites were characterized using high-resolution scanning electron microscopy. The results of experiments highlight the use of experiential reinforcing limits of B4C on the mechanical behavior and corrosion characteristics of copper composites.

Published by: Tukaram Jadhav, Dr. Shivanand H. K.

Author: Tukaram Jadhav

Paper ID: V6I1-1204

Paper Status: published

Published: January 24, 2020

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Research Paper

Effect of air volume in musical drums on the quality of sound produced

To find if there is any correlation between the quality of sound produced and the volume of air present in the membranophones. Materials and methods: The experiment was conducted in an anechoic room with proper sound insulation. The drums were placed on the stands and were marked with a circle of radius 3 cm for accuracy of strikes. In total 15 strokes were recorded to decrease the uncertainty in the force. The data was recorded through a microphone and transferred to a system. The data were analyzed and plotted using Audacity’s in-built function. Results and conclusion: With an increase in the depth, the air has more room to move around and when a sound is produced, the increased volume allows the air to lose energy easily to the surrounds and maybe clash around with each other to decrease its frequency and producing multiple unique sounds at the same time.

Published by: Ratiq Narwal

Author: Ratiq Narwal

Paper ID: V6I1-1205

Paper Status: published

Published: January 24, 2020

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