Academic Platform Journal of Engineering and Science最新文献

{"title":"On the Energy Absorption Capability of Metallic Tubes Subjected to the Radial Wall Crushing Process","authors":"Y. Kahraman","doi":"10.21541/APJES.855080","DOIUrl":"https://doi.org/10.21541/APJES.855080","url":null,"abstract":"Metallic tubes, under axial loading, are frequently preferred in many different industries due to their high energy absorption efficiency. The studies to increase the energy absorption capacity (EAC) of these structures are still up to date. In this study, the deformation behavior and EAC of regionally pre-deformed identical aluminum and steel tubes under axial loading were investigated experimentally. Regional strength increase in tubes was obtained by the radial wall crushing (RWC) process. The RWC process is carried out by radially crushing the desired areas of the metallic tube from the outside with the aid of a specially designed device. Strengthening (hardening) occurs in the pre-deformed regions and as a result, the EAC of the metallic tubes can be increased. It is also noteworthy that the increase in absorbed energy is provided without reinforcement materials. When the experimental results were examined, it was seen that the RWC increased the energy absorption value of aluminum and steel tubes approximately 23% and by 33%, respectively. In addition to energy increases, the folding beginning of the metallic tubes can also be directed by using the RWC process.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128562141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating Quantitative Techniques Into Quality Function Deployment For Determining Of Importance Weights Of Customer Requirements In The Design Of A Baby Diaper","authors":"Derya Haroglu, İzem Leblebi̇ci̇","doi":"10.21541/apjes.896648","DOIUrl":"https://doi.org/10.21541/apjes.896648","url":null,"abstract":"","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115340761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Examination of Urban Road Hierarchy in Regards to Accessibility of Gathering Points in Case of Disaster","authors":"H. E. Erdi̇n, M. B. S. Aydin, Nur Sinem Parti̇göç, H. Z. Çelik, Arzu Palazca, Çiğdem Horoz","doi":"10.21541/APJES.478601","DOIUrl":"https://doi.org/10.21541/APJES.478601","url":null,"abstract":"*1Hilmi Evren Erdin, 2 M. Burcu Sılaydın Aydın, 3Nur Sinem Partigöç, 4Hayat Zengin Çelik, 5Arzu Palazca ve 6Çiğdem Horoz 1 Dokuz Eylül Üniversitesi, Mimarlık Fak., Şehir ve Bölge Planlama Böl., İzmir/Türkiye, evren.erdin@deu.edu.tr 2 Dokuz Eylül Üniversitesi, Mimarlık Fak., Şehir ve Bölge Planlama Böl., İzmir/Türkiye, burcu.silaydin@deu.edu.tr 3 Pamukkale Üniversitesi, Mimarlık ve Tasarım Fak., Şehir ve Bölge Planlama Böl., Denizli/Türkiye, npartigoc@pau.edu.tr 4 Dokuz Eylül Üniversitesi, Mimarlık Fak., Şehir ve Bölge Planlama Böl., İzmir/Türkiye,","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124882402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extending Wireless Sensor Networks’ Lifetimes Using Deep Reinforcement Learning in a Software-Defined Network Architecture","authors":"Z. Abbood, M. Shuker, Ç. Aydin, D. Atilla","doi":"10.21541/APJES.687496","DOIUrl":"https://doi.org/10.21541/APJES.687496","url":null,"abstract":"Routing packets in a Wireless Sensor Network (WSN) is a challenging task, according to the limited resources available on the nodes of these networks, especially their energy sources. The use of Machine Learning (ML) techniques in a Software-Defined Network (SDN) topology has shown a good potential toward solving such a complex task. However, existing techniques emphasize finding the shortest paths to deliver the packets, which can overload certain nodes in the network, depending on their positioning. In this study, a new method is proposed to extend the lifetime of the WSN by balancing the loading on the nodes, using a Deep Reinforcement Learning (DRL) approach. By emphasizing on the lifetime of the network, the proposed method has been able to discover and use alternative routes to deliver the packets, avoiding the use of nodes with low energy. Hence, the average number of hops the packets travel through has been increased but the time required for the first node to exhaust its energy has been significantly increased.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134562701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid Evolutionary Strategy and Simulated Annealing Algorithms for Integrated Process Planning, Scheduling and Due-Date Assignment Problem","authors":"Halil Ibrahim Demir, R. K. Phanden, A. H. Kökçam, B. Erkayman, C. Erden","doi":"10.21541/APJES.764150","DOIUrl":"https://doi.org/10.21541/APJES.764150","url":null,"abstract":"Butunlesik surec planlama ve cizelgeleme (IPPS) problemi ile teslim tarihi belirleme ile cizelgeleme (SWDDA) problemlerinin literaturde kapsamli olarak kapsamli olarak calisilmasina ragmen, surec planlama, cizelgeleme ve teslim tarihi belirleme fonksiyonlarinin butunlesik calisilmasi ile alakali yalnizca birkac calisma vardir. Butunlesik calismalar ile daha iyi bir kuresel performans saglandigindan, bu uretim fonksiyonlarinin birlikte calistirilmasi onem arz etmektedir. Bu calismada, surec planlama ve en kisa teslim tarihine sahip islerin onceliklendirildigi (EDD) cizelgeleme kurali ile teslim tarihi belirleme fonksiyonlarinin entegrasyonu, hibrit evrimsel stratejiler (RS/ES) ve hibrit tavlama benzetimi algoritmalari (RS/SA) kullanilarak incelenmistir. Siradan cozumler (OS), rasgele arama (RS) cozumleri, evrimsel strateji (ES) cozumleri ve tavlama benzetimi (SA) cozumleri birbirleriyle ve ES ve SA hibrit cozumleri de aralarinda karsilastirilmistir. Elde edilen sonuclara gore, daha yuksek butunlesik calismalarin daha iyi oldugu ve en iyi sonuclarin en yuksek entegrasyon duzeyinde gerceklestigi tespit edilmistir. ES ve SA yontemleri RS ve OS ile karsilastirildiginda daha iyi sonuclar vermistir. Calisma sonucunda RS/ES ve RS/SA tekniklerinin butunlesik calismalar icin kullabilabilir algoritmalar oldugu belirtilmistir.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124009277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of an Android Wear Smartwatch Application as a Wearable Interface to the Diabetes Diary Application","authors":"Ömer Pektaş, Murat Köseoğlu, M. Muzny, G. Hartvigsen, E. Årsand","doi":"10.21541/APJES.660490","DOIUrl":"https://doi.org/10.21541/APJES.660490","url":null,"abstract":"In this study, an application was developed for Android-based smartwatches which has the capacity of monitoring the state of diabetes mellitus and indicating the data concerning the physical activities and cardiac rhythm. Android Studio was used to develop and design the application. The application consists of five pages (glucose, insulin, carbohydrate, physical activity, and heart rate) and a watch face. The Dexcom G4 Platinum sensor was used to provide the user’s continuous glucose data. The application not only provides monitoring but also allows the users to enter data entry from the pages. Thus, it is possible to use it as a diary by people with diabetes. The development process of the application was done in collaboration with the Norwegian Centre for e-Health Research in Tromsø, Norway. Also, the application operates simultaneously with an Android phone application called Diabetes Diary, which is developed by this research center.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114364735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Temperature Corrosion Behavior of Eutectic Structured NiAl-34Cr and NiAl-28Cr-6Mo Alloys Produced by Electric Current Activated Sintering","authors":"C. Çeper, N. Ergin, Ö. Özdemir","doi":"10.21541/APJES.708253","DOIUrl":"https://doi.org/10.21541/APJES.708253","url":null,"abstract":"In this study, NiAl-34Cr and NiAl-28Cr-6Mo eutectic alloys were produced by electric current assisted sintering (ECAS) method in a 3500-4200 A current range with a waiting time of 47 minutes. Phase examinations of the obtained samples were carried out with the help of X-ray diffraction analysis (XRD). While determining NiAl and Cr phases in NiAl-34Cr alloy from XRD patterns; It was determined that NiAl-28Cr-6Mo alloy consists of two phases, together with Mo residues, NiAl and CrMo. According to the Archimed principle, the relative density of NiAl-34Cr and NiAl-28Cr-6Mo alloys was determined as 96.2%, 97.9% respectively. The hardness values of NiAl-34Cr and NiAl-28Cr-6Mo samples were approximately 275 ± 13 HB and 255 ± 20 HB detected. In addition, the corrosion properties of the samples were examined by hot corrosion tests at 800, 900 and 1000°C for 165 hours (15 cycles) in 25% wt. K2SO4 + 75% wt. Na2SO4 salt medium. Weight changes, microstructure (SEM-EDS) and phase analysis of the samples after corrosion were carried out, and the corrosion properties of NiAl-34Cr alloy were found to be better compared to the Mo-added alloy. Ö ÖZDEMİR Academic Platform Journal of Engineering and Science 9-1, 79-85, 2021 80","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"493 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125092739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Expert System to Predict Eye Disorder Using Deep Convolutional Neural Network","authors":"Moahmmed Rashid Ahmed Ahmed, S. Ahmed, A. Duru, O. Ucan, O. Bayat","doi":"10.21541/APJES.741194","DOIUrl":"https://doi.org/10.21541/APJES.741194","url":null,"abstract":"Glaucoma according to the W.H.O is one of the major causes of blindness worldwide. Due to its complexity and silent nature early detection of this disease makes it hard to detect. There have been several techniques over the years for classification which have shown significant improvement over the past decade or two. Some of the many classification models are SVM (support vector machine), KNN (K- Nearest Neighbors), Decision tree, Logistic Regression and ANN (Artificial Neural Network) back propagation. For this paper we would consider different procedure and method of early detection of the glaucoma disease using the MATLAB Deep Convolutional Neural Network (DCNN). The DCNN based expert system basically works like the human brain with input, neurons, hidden layers and output. For this project Fundus image of both healthy image and glaucoma image are collected with good lighting condition so that all hidden features can be identify. The Fundus image are then passed through different image processing method such as Grayscale, B&W, Complement, Robert, Resize and power Transform. The fundus is then passed through a texture feature extraction algorithm know as Deep Convolutional Neural Network (DCNN). The features gotten are Contrast, Correlation, energy, Homogeneity, Entropy, Mean, Standard deviation, Variance, skewness and Kurtosis. After the feature extraction the data are arrangement on a spreadsheet which serves as a means of record. Lastly, a deep convolutional neural network is written with one hidden layer, 16 input neuron and 2 output either healthy or not. The data are split into train and test dataset with 70% for training 15% validation and 15% for testing. Accuracy of detection was 92.78% with the execution time of 5.33s only depending on the number of iteration or epochs.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127201564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Döküm Sanayinde Süreç Tabanlı Temel Gösterimleri İle İstatistiksel Süreç Kontrolü","authors":"Kenan Orçanlı","doi":"10.21541/APJES.720051","DOIUrl":"https://doi.org/10.21541/APJES.720051","url":null,"abstract":"In process control in the casting industry, the features of the product, such as diameter, thickness, density, are generally considered as quality characteristics and assignable causes affecting the process is tried to be determined by monitoring these quality characteristics in the quality control charts. However, instead of the features of the producing product as quality characteristics in the casting industry, the proportions of the elements that make up the product can also be accepted. Because the proportions of the elements that make up the product are desired to be within certain limits within the product and these generally vary. In addition, metal ratios, which can be selected as quality characteristics, can be monitored with quality control charts as in the properties of the product, but interpretation of out-of-control signals may not be sufficient. Therefore, in the solution of the problem, instead of quality control graphics, the process-oriented basis representations method in the literature can be used. As a result of the research in the literature, it has been determined that the process-oriented basis representations method has been used successfully in the modeling of geometric deviations in the manufacturing industry, but it is not applied in the process (chemistry, petro-chemistry, casting, etc.) industries, and in multivariate industrial production processes with interrelated quality characteristics. In this content, the aim of this study was is to show that metal alloy ratios can be used as quality characteristics and the process-oriented basis representations method can be applied in process control in the casting industry. The data used in the study were obtained from the production process of Brass Factory Directorate of Mechanical and Chemical Industry Company in Kirikkale province between 01 January 2015 and 31 March 2015. The module in the Minitab package program was used to create the control charts. At the end of the study, it has been determined that in the process control in the casting industry, the element ratios that make up the product produced as quality characteristics can be selected and positive results can be obtained by monitoring the quality characteristics selected in this way with the process-oriented basis representations method. It is evaluated that the results obtained in the study will contribute both to the domestic and foreign literature theoretically and to the quality control applications in terms of practicality in the casting industry.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127771589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Mechanical Behavior of Steel Column Base Plates","authors":"Şahin Sözen, M. Atilgan","doi":"10.21541/APJES.779577","DOIUrl":"https://doi.org/10.21541/APJES.779577","url":null,"abstract":"Major earthquakes in the world led engineers and scientists to work on the connections of steel structures. Since the capacities of the connections, which are one of the important components of a steel structure, significantly affect the capacity of the entire structure, scientists are trying to design new connections and determine the limit states of these connections. At this point, column-base plate connections, which are an interface between reinforced concrete foundation and column, are of great importance in steel structures. In this study, the connections designed using base plates with different thicknesses, different numbers of anchor rods and different column types are analyzed under static loads, and comparative results are introduced in terms of stress and deformations occurred on the connection components. Analyzes were performed using ANSYS, a finite element software that is frequently used in engineering disciplines. The results obtained are interpreted and the advantages and disadvantages of the different types of column base plate connections are revealed. The results of the research show that the thickness of the baseplate used in the connection has a significant effect on the total deformation and stresses on the connection and its components. In addition, it has been determined that the number of anchor rods used in the base-plate connections affects the deformation and stresses. It has been observed that the total rigidity of the connections has a dominant role in the mechanical behavior of the joints.","PeriodicalId":294830,"journal":{"name":"Academic Platform Journal of Engineering and Science","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122246901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}