iosr-JMCE   Volume-18 ~ Issue-2 ~ Mar. – Apr. 2021

Abstract: This paper presents exact approach to buckling analysis of SSSS and CCCC thin rectangular plates under vibration using split-deflection method. In this method, deflection function, is split into . Total potential energy functional for a thin rectangular plate subjected to both buckling load and vibration was formulated from principles of theory of elasticity. By direct variation, the total potential energy functional was minimized with respect to deflection coefficient to obtain the equation for critical buckling load under vibration. The deflection function is of trigonometric-polynomial family. Numerical analyses for plate with all edges simply supported (SSSS) and a plate with all edges clamped (CCCC) were performed. The non-dimensional critical buckling load results......

Keywords: Split-deflection, total potential energy functional, direct variation, trigonometric-polynomial function.

[1]. Bouazza, M., Quinas, D., Yazid, A., and Hamouine, A.(2012). "Buckling of thin plates under uniaxial and biaxial compression". Journal of Materials Science and Engineering, 32 (8), (2012), pp 487-492.
[2]. Bleich, F. Buckling Strength of Metal Structures, McGraw-Hill, New York, 1952.
[3]. Bulson, P.S.(1970). The stability of flat plates. Chatto and Windus London, UK.
[4]. Chajes, A. (1993). Principles of structural stability theory. Englewood Cliffs New Jersey, Prentice Hall.
[5]. Chattopadhyay, A.P. (2011). Elastic buckling behaviour of plate and tubular structures. Msc thesis, Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, Kansas

Abstract: Background: Rotating machineries are widely used in a various type of industrial applications. For reliable working of mechanical system, fault diagnosis of rotating element is the most important and crucial task. Over the past decades, fault diagnosis of mechanical systems has progressed with the evolution of machinery in terms of complexity and scale. High scale machinery require health monitoring and fault diagnosis to guarantee their reliable performance. Research on fault diagnosis of rotary machines has grown rapidly in the recent years. Objective of this paper is to review the recent research trends in the field of rotating machinery fault diagnosis in terms of these aspects: vibration generation mechanism, fault mechanism, signal acquisition and signal processing and fault diagnostics, artificial......

Key Word: Deep learning, Fault diagnosis, Intelligent diagnostics, Rotating machinery, Signal processing, Support vector machines

[1]. Aherwar, A. An investigation on gearbox fault detection using vibration analysis techniques: A review. Australian Journal of Mechanical Engineering. 2012; 10(2): 169-184.
[2]. Loutas TH, Roulias D, Pauly E, Kostopoulos V. The combined use of vibration, acoustic emission and oil debris on-line monitoring towards a more effective condition monitoring of rotating machinery. Mechanical Systems and Signal Processing. 2011; 25:1339–1352.
[3]. Emmanuel Resendiz-Ochoa, Juan J Saucedo-Dorantes, Juan P Benitez-Rangel, Roque A, Osornio-Rios and Luis A, Morales-Hernandez. Novel Methodology for Condition Monitoring of Gear Wear Using Supervised Learning and Infrared Thermography. Appl. Sci. 2020; 10, 506; doi: 10.3390/app10020506, MDPI.
[4]. Wei Yu, Yuqing Li, Minqiang Xu and Wenhu Huang. A Review of Early Fault Diagnosis Approaches and Their Applications in Rotating Machinery. Entropy 2019, 21, 409; doi: 10.3390/e21040409, MDPI.
[5]. Xuefeng CHE N, Shibin WANG, Baijie QIAO, Qiang CHEN. Basic research on machinery fault diagnostics: Past, present, and future trends. Front. Mech. Eng. 2018, 13(2): 264–291.

Abstract: In the field of agriculture, proper irrigation is critical, and it is well recognized that drip irrigation is both cost-effective and productive. In a traditional drip irrigation method, the farmer must keep track of the irrigation schedule, which varies depending on the crop. The irrigation will be automated as a result of the project. The use of low-cost sensors and simple circuitry makes this project a low-cost product that even a poor farmer can afford. This project is ideally adapted for locations where water is scarce and must be used sparingly. This project will make use of the ATMEGA328U controller. The microcontroller is attached to a 16×2 LCD display that shows the water level and moisture level. Individually set solenoid valves regulate the water flow to the area, and four pushbuttons are given to set the limits of water flow. The moisture and water levels are displays the LCD and Blynk mobile application by using of IoT module. The IoT module sends the data to mobile application. Four relays are provided for controlling three solenoid valves, which controls the flow of water to three different parts of the field.

KEYWORDS: Automation, Arduino, Relay, Solenoid Valve, IoT Module, Moisture Sensor, Float Sensor.

[1]. L. Praburaj, "Role of Agriculture in the Economic Development of a Country", Shanlax International Journal of Commerce, Volume: 6, Issue: 3, July-2018.
[2]. Satyanarayana, Acharya A. N. Ranga Agricultural University,Hyderabad, India, T. M. Thiyagarajan, Tamil Nadu Agricultural University, Killikulam, India, Norman Uphoff, Cornell University, USA, "Opportunities for water saving with higher yield using system of rice intensification", Page no:1-26.
[3]. Yanbo Huang,Yubin Lan, Steven J. Thomson, Alex Fang, Wesley C Hoffmann, "Development of soft computing and applications in agricultural and Biologicalengineering", January-2010.
[4]. Andreas Kamilaris, Andreas Kartakoullis, Francesc X. Prenafeta-Boldu, "A review on the practice of big data analysis in agriculture", Computers and Electronics in Agriculture 143 (2017) page no:23–37, September-2017.
[5]. Joaquín Gutiérrez, Juan Francisco Villa-Medina, Alejandra Nieto-Garibay, Miguel Angel Porta-Gándara, "Automated Irrigation System Using a Wireless Sensor Network and GPRS Module", IEEE Transactions on Instrumentation and measurement,2013.

Abstract: Lighting in office buildings can account for approximately 30% of electrical use. This provides an opportunity for energy efficient technologies to be implemented to reduce this load. Automated daylight control systems are part of a growing industry, based on complex electronics and careful placing of light sensors. In an economy that is accepting the need for energy reduction due to the realization of limited fossil fuels, it is important to maintain and enhance energy efficient systems. Research highlighted that previous studies used physical measuring approach, computer based software or an occupant survey to understand how well automated daylight control systems are working. This thesis combined all of these approaches to quantify how much energy automated daylight control......

KEYWORDS: Daylight harvesting, control, systems, energy, buildings

[1]. Adeyemi A. Ogundipe, 2004, Center for Sustainable Building Research: Book on Daylighting Systems and Components, [cited 28 September] available from: Department of Economics and Development Studies, Covenant University, Ota,
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[4]. Choi, A. S., Song, K. D., & Kim, Y. S. (2005). The characteristics of photosensors and electronic dimming ballasts in daylight responsive dimming systems. Building and Environment , 40, 39-50.
[5]. DALI by Design. (n.d.). Q&A About DALI. Retrieved January 10, 2012, from DALI by Design: http://www.dalibydesign.us/faq.html

Abstract: The deficit in electricity and high diesel costs affects the pumping requirements of community water supplies and irrigation; so using solar energy for water pumping is a promising alternative to conventional electricity and diesel based pumping systems. Solar water pumping is based on photovoltaic (PV) technology that converts solar energy into electrical energy to run a DC or AC motor based water pump. An automated irrigation system was designed based on Bluetooth to use in the agricultural crops. The Bluetooth is a wireless radio communication between the farmers Smartphone and the Arduino. The Bluetooth is preferred because of its cost efficient, so that it can be affordable to almost all farmers. This paper describes the details of the design and instrumentation of wireless network, control of irrigation system with correct soil, water, and temperature.

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Abstract: The fatigue performance of a flexible pavement is very important. In recent times, fatigue distress is increasing as a result of submergence of the pavement during the wet season. As a result,pavements fail on time before its life span. To improve the fatigue performance, researchers have done several studies to improve the fatigue performance of road pavement in the presence of moisture by the addition of modifiers. In this study, Candle Wax (CW), Shredded Tyre Chips (STC) and Waste Polythene Bags (WPB) were used to modify the asphalt concrete mix in soaked conditions from 0 to 5days. The aim of this study, was to carry out cost-effectiveness analysis of the fourmixes. That is, theunmodified and modified using CW, STC and WPB modifiers. The fatigue analysis indicated that the STC modified asphalt concrete had a better performance followed by the WPB modified mix and the CW modified mixcompared....

Keywords: Fatigue performance, Shredded tyre Chips, Candle Wax and Waste Polyethene Bag..

[1]. AASHTO Design Guide Draft (2002). – 2.4 Modulus of Elasticity for Major Material Groups, NCHRP Project 1-37A.
[2]. Asphalt Institute (1956) "Mix Design methods for Hot-mix Asphalt Paving", University of Maryland, Manual Series No.2. Lexington.
[3]. Asphalt Institute (1982). Research and Development of Asphalt Institutes' Thickness Design Manual, (9thedn.). Research Report 82-2.
[4]. Igwe, E. A. (2015). "Contributions of Shredded Tire Chips as Filler Material on Stiffness of HMA Concrete", Global Advancement Research Journal of Engineering, Technology and Innovation (GARJETI) 4(5), 80-85.
[5]. Igwe, E. A., Ottos, C. G. and Ekwulo, E. O (2016). "The Role of Candle Wax as Non-bituminous Modifier in Material Recharacterization of Bituminous Concrete Used Synonymously for Flexible Pavement – Study on Voids and Flow", IOSR Journal of Mechanical and Civil Engineering (IOSR -JMCE) 13(5), 74-81..

Abstract: Reactive Powder Concrete (RPC) is composed of very fine powders (cement, sand, and silica fume), steel fibers and super plasticizer. A very dense matrix is achieved. The coarse aggregate becomes the weakest link in concrete. In order to increase the compressive strength of concrete even further, the only way is to remove coarse aggregate. RPC is characterized by extremely good physical properties, such as strength and durability. Due to exposed to high temperature, mechanical properties of RPC gradually improves by increasing temperature up to 200° C, but mechanical properties decrease due to higher temperatures than 200° C . The compressive, flexural and tensile strength, decreased at a higher rate of temperatures higher than 300°C. For an exposure temperature of 300°C, results show that the reduction....

Keywords: High temperatures, Compressive Strength, , flexural strength, Reactive Powder Concrete, splitting tensile strength.

[1]. Yang Ju, Li Wang, Hongbin Liu, and Guowei Ma "Experimental Investigation into Mechanical Properties of Polypropylene Reactive Powder Concrete", ACI Materials 2018: 21-32.
[2]. Yang, J., Hong Bin, L., Jian, C., YuDan, J., and PeiHuo, P., (2009), "Toughness and Characterization of Reactive Powder Concrete with Ultra-High Strength", Sci. China Ser E-Tech Sci. 52(4): 1009-1018.
[3]. Yazici, H. (2007). "The effect of curing conditions on compressive strength of ultra-high strength concrete with high volume mineral admixtures", Building and Environment, 42(5): 2083-2089.
[4]. Yazici, H., Yardımcı, H.Y., Aydın, S. and Karabulut, A., (2009), "Mechanical Properties of Reactive Powder Concrete Containing Mineral Admixtures under Different Curing Regimes", Construction and Building Materials, 23(3): 1223-1231.
[5]. Yuh-Shiou Taia,∗, Huang-Hsing Panb, Ying-Nien Kungb "Mechanical properties of steel fiber reinforced reactive powder concrete following exposure to high temperature reaching 800 ◦C", Nuclear Engineering and Design 241 (2011): 2416–2424.

Abstract: Structural models, when used in conjunction with iterative MMRS investigations, have the ability to replicate the nonlinear behaviour of the isolation system as well as the effects of SSI .Purpose of simulating the superstructures of bridges, three-dimensional beam components are utilised. The SSI impacts are considered by adjusting the adaptability at the foundation of the buildings. There are a few ways to deal with model this soil adaptability in view of rearranged or thorough models. The models make the assumption that there is full composite action between the slab and the girders. Each of the nodal points that connect the many different segments that constitute the superstructure is where the mass of the superstructure is consolidated..

Keywords: Modeling , Nonlinear , Lateral Pile-Soil , Interaction , RC Bridges.

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[2]. Wankhade, Rajan & Ghugal, Yuwaraj. (2016). Study on Soil-Structure Interaction: A Review. International Journal of Engineering Research. 5. 737-741. 10.17950/ijer/v5i3/047.
[3]. Falamarz-Sheikhabadi, Mohammad Reza & Zerva, A.. (2016). Effect of numerical soil-foundation-structure modeling on the seismic response of a tall bridge pier via pushover analysis. Soil Dynamics and Earthquake Engineering. 90. 10.1016/j.soildyn.2016.08.020.
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