iosr-JMCE   Volume-19 ~ Issue-1 ~ Jan. – Feb. 2022

Abstract: In this paper, a three-dimensional (3D) plate theory was used to investigate the stability analysis of an isotropic thick rectangular plate that is clamped in its three edges and one simply supported edge (CCCS) under uniaxial compression using polynomial displacement function. Using three dimensional constitutive relations, the total energy equation for the plate was developed and consequently the equations of compatibility were designed to obtain the relations between the deflection and shear deformation rotation along the direction of x and y coordinates. To obtain the governing equation, this total potential energy functional was differentiated with respect.........

Key words: CCCS plate, stability analysis, three-dimensional (3D) plate theory, polynomial displacement function.

[1]. Ibearugbulem, O. M, Onyeka, F. C. (2020). Moment and Stress Analysis Solutions of Clamped Rectangular Thick Plate. EJERS, European Journal of Engineering Research and Science, 5(4): 531-534. DOI: http://dx.doi.org/10.24018/ejers.2020.5.4.1898.
[2]. Onyeka, F. C. (2020). Critical lateral load analysis of rectangular plate considering shear deformation effect. Global Journal of Civil Engineering, Vol. 1: 16–27. doi:10.37516/global.j.civ.eng.2020.0121.
[3]. Ghugal, Y. M., Gajbhiye, P.D. (2016). Bending analysis of thick isotropic plates by using 5th order shear deformation theory. Journal of Applied and Computational Mechanics, Vol. 2(2): 80-95.
[4]. Onyeka, F. C., Osegbowa, D.E. (2020). Stress analysis of thick rectangular plate using higher order polynomial shear deformation theory. Futo Journal Series (FUTOJNLS), Vol. 6(2): 142-161
[5]. Chandrashekhara, K. (2000).Theory of plates. University Press (India) Limited

Abstract: A composite materials of Fiber reinforced plastic used in a variety of industrial applications, including aircraft structures, automobile structural parts, and micro-electromechanical systems. The goal of this study was to look at how interlayer delamination affects the mechanical properties of composite materials. Artificial delaminations were used to evaluate the effect of their size on laminate stiffness and strength. The hand lay-up approach was used to create a bi-woven E-glass/epoxy composite with an artificial polytetrafluoroethylene (PTFE) film defect in the centre.........

Key words: Delamination, polytetrafluoroethylene (PTFE), Glass/Epoxy, Plies, Hand Lay-up.

[1]. A. Wagih, T.A. Sebaey, A. Yudhanto, G. Lubineau, "Post-Impact Flexural Behavior of Carbon-Aramid/Epoxy Hybrid Composites", Composite Structures , https://doi.org/10.1016/j.compstruct.2020.112022
[2]. Aslan Z, Daricik F, "Effects of multiple delaminations on the compressive, tensile, flexural, and buckling behaviour of E-glass/epoxy composites", Composites Part B (2016), doi: 10.1016/j.compositesb.2016.06.069
[3]. Dipen Kumar Rajak, Durgesh D. Pagar, Ravinder Kumar, Catalin I. Pruncu, Recent progress of reinforcement materials: a comprehensive overview of composite materials, Journal of Materials Research and Technology, Volume 8, Issue 6, 2019, Pages 6354-6374, ISSN 2238-7854, https://doi.org/10.1016/j.jmrt.2019.09.068.
[4]. I. Papa, L. Boccarusso, A. Langella, V. Lopresto, ''Carbon/Glass hybrid composite laminates in vinylester resin '', Composite Structures (2019), https://doi.org/10.1016/j.compstruct.2019.111571
[5]. Luis F. Sánchez-Heres, Jonas W. Ringsberg, Erland Johnson, 6 - Effective use of composite marine structures: Reducing weight and acquisition cost, Editor(s): Richard Pemberton, John Summerscales, Jasper Graham-Jones, In Woodhead Publishing Series in Composites Science and Engineering, Marine Composites, Woodhead Publishing, 2019, Pages 161-183, ISBN 9780081022641, https://doi.org/10.1016/B978-0-08-102264-1.00006-6.

Abstract: Background: The volumetric changes of Block cotton soil creates many problems in structures & pavements , thus for a stable performance & long life of structures & roads, it is necessary to upgrade the properties of Block cotton soil. This project deals with upgrade the physical properties of Block cotton soil through addition of low cost industrial wastes such as foundry sand and steel slag sand. Laboratory tests were conducted on various proportions of admixtures with a Block cotton soil from 0% to 40% at an interval of 8%. In these study the tests conducted in laboratories are Atterbergs limits, Compaction tests, Unconfined compression strength tests and California bearing ratio tests. From this tests we got good results. The soaked CBR value improves up to 9.43% &8.15 for Foundry sand and steel slag respectively for 40% replacement. The UCS value improves up to 6.03%& 5.57% respectively for Foundry sand and steel slag for 40% replacement.........

Key words: Liquid Limit(LL) ; Unconfined Compressive Strength (UCS); Maximum Dry Density (MDD), Black cotton Soil (BCS), California Bearing Ratio (CBR),

[1]. B.C.punamiya and A.K.Jain, " Soil mechanics and engineering property".
[2]. C.E.G.Justo and S.K.Khanna, " highway engineering
[3]. Brajesh mishra,Assistant engineer U P(2014) presented the stabilisation of clayey soil using foundry sand
[4]. Sanjeev tanaji jadhav,Sushma shekhar kulkarni(2014) carried laboratory investigations on the charecterstics of black cotton soil byusing foundry sand.
[5]. Kiran B Biradar,U Arun kumar,Dr PVV Satyanarayana from Vizag(AUCOE)AP presented a comparative study on Influence of Steel slag and Fly ash on the strength properties of clayey soil
[6]. IS 2720,Codes for all tests

Abstract: This study examined the Prospects and challenges of the movement of the National Institute of Construction Technology and Management Uromi, Nigeria, from its temporary site to its permanent facility. The study was primarily carried out to establish the factors that influenced the polytechnic's relocation, the attitude of staff members towards the movement, the challenges associated with the movement, and to determine the opportunities accruable to the movement to the a permanent structure. The descriptive survey method was used in this study. An online survey questionnaire was sent to academic and non-academic staff of the National Institute of Construction Technology and Management Uromi, Edo State, Nigeria. The entire staff of the polytechnic formed the population of the study. There was therefore no need for sampling. A total of 60 questionnaires were returned. Data were analyzed using graphical charts..........

Key words: Movement, NICTM, Permanent structure, Relocation, Temporary Structure.

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[2]. BusinessVibes (2015). 6 Reasons Why a Relocation is Good for Business. Retrieved from https://www.business2community.com/business-intelligence/6-reasons-relocation-good-business-01407703 , on January 8, 2022.
[3]. Cy Movers (2021). 26 Common Issues Encountered While Moving And How To Fix Them : A Comprehensive Guide To Moving. Retrieved from http://www.cycmovers.com/moving-guide/26-common-issues-encountered-while-moving-and-how-to-fix-them-a-comprehensive-guide-to-moving/, on (December 31, 2021).
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[5]. Help Moving Office (2022). Most common reasons why a company relocates. Retrieved from https://www.helpmovingoffice.com/article/most-common-reasons-why-a-company-relocates, on January 8, 2022..

Abstract: There have been in recent time's research being extended to the utilization of gas turbines adopting bio fuels. The main idea is that a large number of turbines after aviation /defense uses is normally confined to the storage yards and utilized for reclamation of auxiliary units or metals. Not to be differentiated from the normal use of JP4 or kerosene as fuels, a simplified gas turbine matching parametric relationship has been established. Considering a normal Brayton cycle, relationships have been arrived at for various parametric variables. This is a conceptual paper.

Key words: Gas turbines for bio fuels, bio fuelling gas turbines, renewable energy turbines

[1]. Horlock, J. H., 1966, Axial Flow Turbines, Fluid Mechanics and Thermodynamics, Butterworths, UK [2]. Cohen, H., Saravanamuttoo, H. I. H., et al., 2001, Gas Turbine Theory, Pearson Education, UK
[3]. Gopalakrishnan, G., 2019, Turbomachines, Coral Publishers, Chennai, India

Abstract: The construction industry plays a vital role in the Egyptian economy. The main contractor depends on the subcontractors in the execution of the project. However, lack of planning, poor management, and contracting lead to many problems such as delays that cause claims and conflicts among the parties of the project. A model based on visual studio, C programming language, problems and solutions have been applied to solve problems facing projects. This research helps to choose a subcontractor in a project and improve the Egyptian subcontracting environment. A case study has been studied in the Egyptian construction industry about the relationship between the main contractor and the subcontractors. To avoid some of the problems that face relationship between the contractor and.....

Keywords: Main contractor; Subcontractor; Disputes; Contracting; Egyptian Construction Industries

[1]. A. O. Ujene, E. Achuenu, and O. Eta, "The Nature and Effects of Subcontracting on the Performance of Building Projects in South-South Zone of Nigeria," J. Archit. Plan. Constr. Manag., vol. 1, no. 2, pp. 1–20, 2011.
[2]. J. Mbachu, "Conceptual framework for the assessment of subcontractors' eligibility and performance in the construction industry," Constr. Manag. Econ., vol. 26, no. 5, pp. 471–484, 2008, DOI: 10.1080/01446190801918730.
[3]. H. White and R. Marasini, " Management of Interface between Main Contractor and Subcontractors for Successful Project Outcomes," J. Eng. Proj. Prod. Manag., vol. 4, no. 1, pp. 36–50, 2014, DOI: 10.32738/jeppm.201401.0005.
[4]. L. Yoke-Lian, S. Hassim, R. Muniandy, and L. Teik-Hua, "Review of subcontracting practice in the construction industry," WCSE2012 - Int. Work. Comput. Sci. Eng., vol. 4, no. 4, pp. 442–445, 2012, doi: 10.7763/ijet.2012.v4.406.
[5]. P. E. Eriksson and M. Westerberg, "Effects of cooperative procurement procedures on construction project performance: A conceptual framework," Int. J. Proj. Manag., vol. 29, no. 2, pp. 197–208, 2011, DOI: 10.1016/j.ijproman.2010.01.003.

Abstract: This paper deals with heat transfer and flow field analysis of trapezoidal fins of air-cooled heat exchanger (ACHE). The performance parameters such as heat transfer rate, Reynold's number, Nusselt number, pressure drop and heat exchanger effectiveness for five types of setup were investigated. The experimental set-up consist of a five different setups one with simple air-cooled heat exchanger (ACHE) without grooving, second with internal spiral grooving pitch of 5mm, third with internal spiral grooving pitch of 10mm, forth internal spiral grooving pitch of 15mm and fifth with internal spiral grooving pitch of 20mm with rectangular fin respectively using aluminum as tube and fin material. All experiments were carried out at different temperature for both free and forced air convection.....

Keywords: Rate of heat transfer, Effectivness, Thermal efficiency, Spiral grooving, Rectangular Fins, Reynold Number, Pressure Drop

[1]. Jian Wang et al., Experimental investigation of heat transfer and flow characteristics in finned copper foam heat sinks subjected to jet impingement cooling, Applied Energy, VOL-241 ,PP: 433–443, 2019.
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[3]. Hai Wang et al.Heat transfer performance of a novel tubular oscillating heat pipe with sintered copper particles inside flat-plate evaporator and high-power LED heat sink application, Energy Conversion and Management, VOL-189 ,PP:215–222, 2019.
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