iosr-JMCE   Volume-18 ~ Issue-6 ~ Nov. – Dec. 2021

Abstract: In our analysis, numerical model have been developed the model is considered as existing part in continuous production of ingots. The analysis results show that temperature range between 1841 to 1884 K gives absolute convergence on temperature, Validation and optimization is done to determine the effect of temperature and velocity during working heating and non – heating plasma condition. The temperature and velocity with respect to time (s) is analysed in tundish casting for enhancement of proper casting process to reduce internal stresses generated due to imbalance of temperature and velocity. Pouring time were also analysed at different heated plasma condition for enhancement of settlement of molten steel in tundish casting. Hence, temperature of 1841 to 1884 K with time of 120 to 180 exhibits optimum convergence in casting of molten steel in tundish casting with different heating plasma values i.e. 300, 350, 400, 450 and 600 KW.

Key words: Velocity, Temperature, Tundish casting, Non – heating plasma, Heated plasma, Taguchi optimization technique.

[1]. VialeMariana et al. "Slab Length Optimisation During Fly Tundish Operation at the Continuous Casting Using Artificial Intelligence Techniques", IFAC Proceedings Volumes, Volume 34, Issue 18, September 2001, Pages 375-380
[2]. MehdiALIZADEH et al. "Fluid Flow and Interfacial Phenomenon of Slag and Metal in Continuous Casting Tundish with Argon Blowing", Journal of Iron and Steel Research, International, Volume 15, Issue 4, July 2008, Pages 26-31
[3]. WANG et al. "Fluid Flow and Interfacial Phenomenon of Slag and Metal in Continuous Casting Tundish With Argon Blowing", Journal of Iron and Steel Research, International, Volume 15, Issue 4, July 2008, Pages 26-31
[4]. QiangYUE et al. "Water Modeling of Swirling Flow Tundish for Steel Continuous Casting", Journal of Iron and Steel Research, International, Volume 16, Issue 5, September 2009, Pages 17-22
[5]. MoumtezBensouici et al. "Numerical Investigation of the Fluid Flow in Continuous Casting Tundish Using Analysis of RTD Curves", Journal of Iron and Steel Research, International, Volume 16, Issue 2, March 2009, Pages 22-29

Abstract: This empirical study presents the results of the investigation carried out on the relationship between compressive strength of sand-quarry block and their corresponding cube strength, using quarry dust as partial replacement of 3 different river sand samples of fineness modulus of 2.38, 2.55 ,and 3.02 with varying percentage replacements of 0%,10%,20%,30%,40%,50% to 100%. A total of 99 cubes of 100 × 100 × 100mm size and 99 blocks of 450 × 225 × 255mm size were produced with a mix ratio of 1:6 and 1:6 respectively. Three(3) cubes and 3 hollow blocks for each replacement and a total 33 cubes and 33 blocks for each river sand, were crushed to obtain the compressive strength of 28day curing respectively. It was found out that the sandcrete cubes possess.....

Key words: Fineness modulus, river sand, Quarry dust, compressive strength, quarry dust-sandcrete block, quarry dust sandcrete cube, percentage replacement, mix ratio.

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[2]. Andams .K. (2002). Enhancing the Compressive Strength of Quarry Dust using single and mixed size coarse aggregates. Proceedings of SEAM 4. pp 76-78.
[3]. Chandana Sukesh. (2013). River Sand alternation with granite Dust in Construction industry .International Journal of Innovative Technology and exploring Engineering 2:253 - 257.
[4]. Dan . Ravin.( 1997) . Structural characterisation of Concrete with high Quantity of Fly-Ash as partial fine sand replacement. Materials and Structures/Materiaux et Construction, 30,473
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Abstract: To analyze the structures with rigid underground or bottom stories, two approaches are common among the practicing engineers. In the first approach, the entire structure including the basement walls is analyzed for the first few modes by mode superposition method using Eigen vectors while the similar second approach neglects the rigidity of the basement walls. There exists another approach in which two-stage analysis is performed but due to implementation issues, it is not performed for large structures. The present study provides a comparison of the two common approaches and also deals with the effect of mode truncation for building with rigid underground stories. Further, it is suggested that complete seismic response of the buildings with rigid underground stories should be captured and for that a computationally efficient method based on load-dependent Ritz vector is recommended.

Key words: Underground stories; Mode superposition analysis; Ritz vector; Eigen vector; Missing mass

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[4]. M. Dhileep and P. Bose, "A comparative study of "missing mass" correction method for response spectrum method of seismic analysis," computers and structures, vol. 86, pp. 2087-2094, 2008. https://doi.org/10.1016/j.compstruc.2008.04.003
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Abstract: The present work focuses on the study of the mechanical properties of metakaolin concrete (MKC) based on the partial substitution of cement in a reference concrete by Balengou halloysite clay in West Cameroon. The clay heat treatment test, the particle size analysis test of the aggregates used, the water content test, the sand equivalent test, the specific gravity and bulk density test, the mix design of the reference concrete by the Dreux - Gorisse method, the mix design of metakaolin concrete with partial substitution of the cement in the reference concrete by 0, 10, 20, 30 and 40% of halloysite clay from Balengou namely MKC0% MC10% MKC20% MKC30% and MKC40%. The results obtained were impressive with 21.20 MPa and 1.87 MPa at 7 days for MKC20% in compression and tension respectively......

Key words: Halloysite clay; partial substitution of cement, Design of metakaolin concrete, mechanical strengths.

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Abstract: These days, trains may be able to compete on an equal footing with aero planes on a serious basis. When properly constructed and maintained, the railway may serve as a mode of transportation, reaching speeds of up to 300 kilometers per hour or more. The development, material quality and manual manufacturing of pre-stressed concrete made concrete railroad ties popular in Europe after World War II. As ever, concrete ballast sleepers are the fundamental foundation of road building throughout the globe, but equally popular and extensively utilized are twin-block concrete sleepers. With operating loads and speeds constantly rising, railway firms have been compelled to upgrade their technological and economical.......

Key words: Faster trains, ballasted track, ballastless track, deformation of high speed trains etc

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[2]. Cai, X., Zhao, L., Lau, A.L.L., Tan, S. and Cui, R., 2015. Analysis of vehicle dynamic behavior under ballasted track irregularities in high-speed railway. Noise & Vibration Worldwide, 46(10), pp.10-17.
[3]. Xiao, J.L., Jing, P., Yu, S.X. and Wang, P., 2020. Analysis on the track quality evolution law of polyurethane-reinforced ballasted track in high-speed railway. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, p.0954409720975572.
[4]. Lu, C. and Cai, C., 2020. Overview on safety management and maintenance of high-speed railway in China. Transportation Geotechnics Guo, Y. and Zhai, W., 2018. Long-term prediction of track geometry degradation in high-speed vehicle–ballastless track system due to differential subgrade settlement. Soil Dynamics and Earthquake Engineering, 113, pp.1-11., 25, p.100397.
[5]. Jadidi, K., Esmaeili, M., Kalantari, M., Khalili, M. and Karakouzian, M., 2021. A review of different aspects of applying asphalt and Bituminous mixes under a railway track. Materials, 14(1), p.169.

Abstract: Risk matrix is an effective tool used to give a visual sense of security for activities included in a certain project. It is usually used in risky fields such as oil, gas, and mining. This tool can be modified to define the expected risk over the environment for projects in environmental impact assessment studies. This paper aims to introduce a New Proposed Risk Matrix and compare it with the Traditional Project Risk Matrix. The comparison was carried out by applying both techniques to an existing project consisting of an offshore platform and a pipeline with a previous environmental and risk assessment study. Parameters of comparison included judgment of each action using both matrices. Also, an evaluation of each phase and the whole project performed was done. The methodology of assessment was illustrated and final comparison between the resulted was included..

Key words: Risk matrix, Offshore Projects, Offshore Platform, Pipelines, Environmental Impact Assessment, Risk Assessment, Traditional Project Risk Matrix, New Proposed Risk Matrix.

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Abstract: This study aims to analyze the impact test strength of a mixture of pandan mat fiber with epoxy resin as a test medium for motorcycle body kit materials with fiber orientation directions 0°, 45°, *R° (Random), with a comparison of the composition of the epoxy resin matrix (A). +hardener (B) (A: B/2:1), 95%, 85%, 75%, with pandan mat fiber as 5%, 15%, and 25%, with the Charpy Impact testing method. This test is carried out regarding the JIS Z 2202 impact test standard. In the experiments that have been carried out, it was found that the test object with the code MF-04 with fiber orientation direction 0° with a ratio of the resin composition (A) + hardener (B) (A: B/2:1).......

Key words: Body Kit, Pandan Mat, Epoxy Resin, Impact Test

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