IJET Vol. 5, Issue 2, June 2019

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https://hdl.handle.net/11363/1388

International Journal of Engineering Technologies (IJET) Dergisi / International Journal of Engineering Technologies (IJET)

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International Journal of Engineering Technologies (IJET) Vol. 5, Issue 2, June 2019
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019) Bayram, Mustafa
Dear Colleagues, On behalf of the editorial board of International Journal of Engineering Technologies (IJET), I would like to share our happiness to publish the 18th issue of IJET. My special thanks are for members of Editorial Board, Publication Board, Editorial Team, Referees, Authors and other technical staff. Please find the 18th issue of International Journal of Engineering Technologies at http://ijet.gelisim.edu.tr or http://dergipark.gov.tr/ijet. We invite you to review the Table of Contents by visiting our web site and review articles and items of interest. IJET will continue to publish high level scientific research papers in the field of Engineering Technologies as an international peer-reviewed scientific and academic journal of Istanbul Gelisim University. Thanks for your continuing interest in our work, Professor Mustafa BAYRAM Istanbul Gelisim University mbayram@gelisim.edu.tr http://ijet.gelisim.edu.tr http://dergipark.gov.tr/ijet Printed ISSN: 2149-0104 e-ISSN: 2149-5262
Numerical Data Modelling and Classification in Marine Geology by the SPSS Statistics
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Lemenkova, Polina
The paper focuses on the geostatistical analysis of the data set on the Philippine archipelago. The research question is understanding variability in several geospatial parameters (geology, geomorphology, tectonics and bathymetry) in different segments of the study area. The initial data set was generated in QGIS by digitizing 25 cross-sectioning profiles. The data set contained information on the geospatial parameters in the samples by profiles. Modelling and statistical analysis were performed in SPSS IBM Statistics software. The analysis of the topography shows strong variability of the elevations in the samples with the extreme depths in the central part of the study area (profile 13 with -9,400 m) and highest elevations in its south-western part (profile 17 with 1950 m). The analysis of the geological classes and lithology shows maximal samples of the basic volcanic rocks (40,40%) followed by mixed sedimentary consolidated rocks (31,90 %). Pairwise analysis of the sediment thickness and slope aspect demonstrates correlation between these two variables with the maximal sediment layer in the profiles 1-4 crossing the Philippines. The hierarchical dendrogram clustering of the bathymetry by three approaches shown maximal correlation of 5 clusters containing profile groups: 12-18 (centre), 22-25 (south-west), 1-2 (north), 7-8 (north-east), 19-21 (south-west). Other profiles show lesser similarities in the bathymetric patterns. The forecasting models were computed for the geospatial variables showing gradual increase in the gradient angles southwards and increased values for the sediment thickness in the north. Technically, the results proved effectiveness of the SPSS application of the geological data modelling.
The Compressive Strength Development of Alkali Activated Fly Ash/Slag Concretes with Different Alkali Activator Ratios
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Niş, Anıl
Recently, geopolymer or alkali-activated concrete takes great attention due to low carbon footprint since fly ash and ground granulated blast furnace slag (industrial by-product materials) has been utilized as binder materials in the alkali-activated concrete. In this research, the compressive strength (CS) development of the alkali-activated fly ash/slag (AAFAS) concrete was investigated in an ambient environment at 7., 14., 28., and 56. days using alkali activator (sodium silicate to sodium hydroxide) ratios of 1, 1.5, 2, and 2.5 with 6M SH (low) concentration. In addition, the effect of delayed oven-curing condition was also studied at 56.day. The results indicated that for the ambient-cured specimens with 6M SH concentration, the maximum and minimum CS were reached in the AAFSS concrete with alkali activator (SS/SH) ratios of 2 and 1, respectively. The AAFAS concrete with an alkali activator ratio of 2.5 showed the lowest CS enhancement after 7.day and 14.day, while the AAFAS specimens with an alkali activator ratio of 1.5 performed the least CS improvement at 28.day in the ambient environment. Meanwhile, the highest CS enhancement was observed in the specimens with an alkali activator ratio of 2 for all ages. Due to the delayed oven-curing, the least and the highest CS enhancements were observed in the AAFAS specimens with alkali activator ratios of 2 and 1.5, respectively. The results pointed out that AAFAS concrete with a higher alkali activator ratio (?2) should be used for structural applications in the ambient environment.
Mathematical Model of the Traveling Salesman Problem with Delivery and Draft Limit
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Mersin, Kadir; Nur, Cemile
In this paper, we determine the order of the ports to be reached with the help of graph theory and establish Hamilton cycles. We obtain sub-solutions and solution sets with the help of these cycles. Moreover, we prove some relations about the draft limit and the demand of the port. Finally we present some examples.
One–Dimensional Solute Transport for an Input against the Flow in a Homogeneous Finite Porous Media
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Yadav, Raja Ram; Roy, Joy; Jaiswal, Dilip Kumar
A theoretical model comprising advection-dispersion equation with temporal seepage velocity, dispersion coefficient and time dependent pulse type input of uniform nature applied against the flow is studied in a finite porous domain. Input concentration is any continuous smooth function of time acts up to some finite time and then eliminated. Concentration gradient at other boundary is proportional to concentration. Dispersion is proportional to seepage velocity. Interpolation method is applied to reduce the input function into a polynomial. Certain transformations are utilized to reduce the variable coefficient advectiondispersion equation into constant coefficient. The Laplace Transform Technique is applied to get the solution of advection dispersion equation. Two different functions of input are discussed to understand the utility of the present study. Obtained result is demonstrated graphically with the help of numerical example.
Determining the Velocity Distribution Profile of a Fluid in an Inclined Flat Surface Using the Finite Element Method and the Exact Differential Equation Method
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Erhunmwun, Iredia Davis; Oside, Collins
An analysis has been carried out to determine the velocity profile of a fluid on an inclined plane using the Finite Element Method (FEM). The overall results from these finite elements were finally assembled to represent the velocity profile in the entire domain of the inclined plane. The results obtained from the finite element method shows that as the velocity distribution has a parabolic profile with the maximum velocity of 1109.8748m/s at open surface of the inclined plane. The fluid due to the no slip boundary condition has 0m/s at the walls of the inclined plane. Also, it was shown that the higher the angle of inclination and fluid viscosity, the lower the velocity and also the higher the fluid density, the higher the velocity. The result obtained from the FEM when compared with the result obtained from the exact differential equation method shows a strong agreement with a maximum percentage error of 2.3413x10-14 .
Controlling a Robotic Arm Using Hand Recognition Software
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Çetinkaya, Ali; Öztürk, Onur; Okatan, Ali
With the increasing need of repetitive tasks in the manufacturing industry, robotic automation is becoming a necessity. In the steel industry, workers become less efficient over time, causing interruptions during assembly. Robotic automation is capable of operating at highest efficiency therefore increasing productivity in the steel industry. The robot will be able to pick up and drop metallic object with the help of the electromagnet present on the robotic arm. The handling of the objects will be triggered by the hand gestures from the user. The image to be processed will be captured by an external camera. This robot is built as a prototype for the steel industry.
Finite Element Analysis of Tungsten Inert Gas Welding Temperatures on the Stress Profiles of AIS1 1020 Low Carbon Steel Plate
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Ikechukwu, Owunna; Aniekan E., Ikpe
For better understanding of the residual stress fields associated with Tungsten Inert Gas (TIG) welding, thermal analysis was carried out using Solid Works 2017 version and ESI Visual-Environment 2016 version to compute the transient temperature profile due to welding thermal loading and resulting stress field in three categories namely; von-mises stress, axial stress and thermal stress. A range of welding temperatures including 1746oC, 1912oC, 2100oC, 2410oC and 2800oC were experimentally applied in the joining process of AISI 1020 low carbon steel plate of 10 mm thickness and a strain gauge indicator was used to measure the thermal stresses induced in the steel plate which the average was recorded as 38,200MPa. The experimental parameters and conditions were applied in finite element simulation of the same plate dimension, and average vonmises stress of 37,508 MPa, average axial stress of 30,732 MPa and average thermal stress of 20,101 MPa was obtained. However, it was observed that the higher the welding temperature, the higher the stresses induced in the welding material. Hence, temperature for TIG welding process should be regulated at its optimum to avoid fatigue acceleration, stress propagation, early crack nucleation and possible fracture on the welded component which may limit the longevity and performance of such component in its service condition.
A Framework for Production Capacity and Time Utilization of Mono Product Sequential Process Plants
(İstanbul Gelişim Üniversitesi Yayınları / Istanbul Gelisim University Press, 2019-6-30) Olabanji, Olayinka Mohammed
This article addresses the challenges of estimating production capacity and time utilization problem in a sequential process plant. A framework and mathematical model are presented to aid the analysis and understanding of the proposed solution. A set of constraints is provided in order to specify the requirements for production capacity and time utilization planning in a sequential process plant. In order to ascertain the performance of the framework, the mathematical models derived are tested using an existing designed process plant and the results obtained from the evaluation are also presented. The proposed model generates the utilized time for the process plant per batch and also the production capacity of the process plant as well as the production rates of individual machines in the process plant. Application of the model to an existing process plant demonstrates that the addition of buffer storage to store work in progress materials in a mono product sequential process plant will increase the production rate of the plant but the production rate of the machines in the plant remains constant. Also, the addition of buffer storage will increase the time utilized by the process plant to complete its operation per batch.

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