Pub Date : 2023-01-01DOI: 10.5505/pajes.2022.61657
Cansu Bozkurt, Mahmut Fırat, Abdullah Ateş
{"title":"Developing a model to evaluate current practice level of key data used in water loss management","authors":"Cansu Bozkurt, Mahmut Fırat, Abdullah Ateş","doi":"10.5505/pajes.2022.61657","DOIUrl":"https://doi.org/10.5505/pajes.2022.61657","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135214718","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2021.68047
Yasin Yilmaz, H. Callioglu, Ali Balbay
Bu çalışmada, karbon nano tüp (CNT) katkılı cam fiber/epoksi (GFRP) ve karbon fiber/epoksi (CFRP) kompozit borusal yapıların ezilme ve crushing and energy absorption behavior of carbon nanotube (CNT) reinforced glass fiber/epoxy (GFRP) and carbon fiber/epoxy (CFRP) composite tubular structures has been investigated. The study consists of two main parts. First part deals with the experimental studies. At this stage, functionalized multi-walled CNT added (at weight percentages of 0.1; 0.2; 0.3; 0.5; 1; 2%) and additive free GFRP composite plates were produced using hand lay-up method and tension, compression and shear tests were carried out to determine mechanical properties of the composite materials. As a result of these investigations, 0.5% CNT addition is determined to be most suitable rate for the composite in terms of tension, compression, and shear strength. The second part deals with the numerical studies. At this stage, quasi-static crushing and energy absorption characteristics of circular and square cross-section GFRP and CFRP tubes were investigated numerically using the determined mechanical properties in a commercial finite element based software (ABAQUS). The mechanical properties of CFRP tubes were taken from the existing literature. As a result of numerical studies, the specific energy absorption capacity of circular CFRP tubes was found to be most efficient compared to the other tubes.
{"title":"Investigation of quasi-static crushing and energy absorption behaviors of carbon nanotube reinforced glass fiber/epoxy and carbon fiber/epoxy composite tubular structures","authors":"Yasin Yilmaz, H. Callioglu, Ali Balbay","doi":"10.5505/pajes.2021.68047","DOIUrl":"https://doi.org/10.5505/pajes.2021.68047","url":null,"abstract":"Bu çalışmada, karbon nano tüp (CNT) katkılı cam fiber/epoksi (GFRP) ve karbon fiber/epoksi (CFRP) kompozit borusal yapıların ezilme ve crushing and energy absorption behavior of carbon nanotube (CNT) reinforced glass fiber/epoxy (GFRP) and carbon fiber/epoxy (CFRP) composite tubular structures has been investigated. The study consists of two main parts. First part deals with the experimental studies. At this stage, functionalized multi-walled CNT added (at weight percentages of 0.1; 0.2; 0.3; 0.5; 1; 2%) and additive free GFRP composite plates were produced using hand lay-up method and tension, compression and shear tests were carried out to determine mechanical properties of the composite materials. As a result of these investigations, 0.5% CNT addition is determined to be most suitable rate for the composite in terms of tension, compression, and shear strength. The second part deals with the numerical studies. At this stage, quasi-static crushing and energy absorption characteristics of circular and square cross-section GFRP and CFRP tubes were investigated numerically using the determined mechanical properties in a commercial finite element based software (ABAQUS). The mechanical properties of CFRP tubes were taken from the existing literature. As a result of numerical studies, the specific energy absorption capacity of circular CFRP tubes was found to be most efficient compared to the other tubes.","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71114540","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2021.88393
Işılay Bozkurt, G. Ulutaş
{"title":"Duplicated frame forgery detection in videos based on edge detection","authors":"Işılay Bozkurt, G. Ulutaş","doi":"10.5505/pajes.2021.88393","DOIUrl":"https://doi.org/10.5505/pajes.2021.88393","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71114605","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2021.99491
M. Ak, Ilayda Top
{"title":"The effect of soil types on nitrogen and phosphorus removal from secondary treated municipal wastewater by using soil-aquifer treatment system","authors":"M. Ak, Ilayda Top","doi":"10.5505/pajes.2021.99491","DOIUrl":"https://doi.org/10.5505/pajes.2021.99491","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71115092","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2022.38227
Alp Özdemir, A. Özkan, Z. Günkaya, M. Banar
{"title":"Co-pyrolysis of municipal solid waste and municipal sewage sludge and characterization of liquid product","authors":"Alp Özdemir, A. Özkan, Z. Günkaya, M. Banar","doi":"10.5505/pajes.2022.38227","DOIUrl":"https://doi.org/10.5505/pajes.2022.38227","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71115958","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2022.88027
Fatma Oguz Erdogan, Okan Duman
{"title":"Evaluation of explosive atmosphere in a paint shop according to standards","authors":"Fatma Oguz Erdogan, Okan Duman","doi":"10.5505/pajes.2022.88027","DOIUrl":"https://doi.org/10.5505/pajes.2022.88027","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71116016","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2022.98371
Bulut Kuskonmaz, H. Özkan
{"title":"Investigation of Fourier features via neural networks and an application to smart steering in wireless mesh networks","authors":"Bulut Kuskonmaz, H. Özkan","doi":"10.5505/pajes.2022.98371","DOIUrl":"https://doi.org/10.5505/pajes.2022.98371","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71116305","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2021.09234
G. Erden, Cihan Topuz
usability of peroxydisulphate (PDS) oxidation for biological sludge obtained in municipal wastewater treatment plant for sludge disintegration prior to stabilization by anaerobic method was investigated. In addition, PDS oxidation has been evaluated as a conditioning process in order to improve the filterability properties of sludges. In this study, PDS oxidation was applied to sludges taken from Denizli Wastewater Treatment Plant where municipal wastewater is treated. Process conditions (concentration and temperature) were optimized using response surface statistical analysis in terms of disintegration and conditioning. Disintegration Degree (DD) for disintegration process and reduction in Capillary Suction Time (CST) are considered as efficiency for conditioning process. After determining the optimum conditions for the disintegration method, biochemical methane potential (BMP) tests were conducted to determine the anaerobic degradability of the sludge. The highest degree of disintegration (DD) was obtained when 900 g/kg DS concentration and 100°C temperature was applied and DD value was determined as 51.5%. This application enabled an increase of 42.6% methane gas compared to raw sludge. As a result of the study, It has been determined that oxidation process with PDS causes more methane gas formation in the anaerobic digestion process by providing disintegration of sludge. The lowest KES value was obtained in 1100 g/kg KM and 20 °C application, and the decrease in KES value was calculated as 89% in this application. This result showed that PDS oxidation improved the dewatering property of the sludges.
{"title":"Sludge oxidation with peroxydisulphate: Effects on disintegration, anaerobic degradability and filterability properties","authors":"G. Erden, Cihan Topuz","doi":"10.5505/pajes.2021.09234","DOIUrl":"https://doi.org/10.5505/pajes.2021.09234","url":null,"abstract":"usability of peroxydisulphate (PDS) oxidation for biological sludge obtained in municipal wastewater treatment plant for sludge disintegration prior to stabilization by anaerobic method was investigated. In addition, PDS oxidation has been evaluated as a conditioning process in order to improve the filterability properties of sludges. In this study, PDS oxidation was applied to sludges taken from Denizli Wastewater Treatment Plant where municipal wastewater is treated. Process conditions (concentration and temperature) were optimized using response surface statistical analysis in terms of disintegration and conditioning. Disintegration Degree (DD) for disintegration process and reduction in Capillary Suction Time (CST) are considered as efficiency for conditioning process. After determining the optimum conditions for the disintegration method, biochemical methane potential (BMP) tests were conducted to determine the anaerobic degradability of the sludge. The highest degree of disintegration (DD) was obtained when 900 g/kg DS concentration and 100°C temperature was applied and DD value was determined as 51.5%. This application enabled an increase of 42.6% methane gas compared to raw sludge. As a result of the study, It has been determined that oxidation process with PDS causes more methane gas formation in the anaerobic digestion process by providing disintegration of sludge. The lowest KES value was obtained in 1100 g/kg KM and 20 °C application, and the decrease in KES value was calculated as 89% in this application. This result showed that PDS oxidation improved the dewatering property of the sludges.","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71113611","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2021.16689
Nigar Karagül, A. Eroglu
{"title":"Production lot sizing with quality screening, rework and shortages backordered","authors":"Nigar Karagül, A. Eroglu","doi":"10.5505/pajes.2021.16689","DOIUrl":"https://doi.org/10.5505/pajes.2021.16689","url":null,"abstract":"","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71113759","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}
Pub Date : 2022-01-01DOI: 10.5505/pajes.2021.58708
Burcu Küçükoğlu Doğan, T. Karaçay
Polimer hibrit rulmanlarda bilezikler viskoelastik malzemeden bilyalar ise farklı malzemeden üretildiklerinden temas mekaniği çelik rulmanlarda olduğu gibi elastik temas olan Hertz temas ile incelenememektedir. Hertz temas yerine elasto-plastik temas modelinde Hertz temasla aynı olarak değerlendirilen temas modeli kullanılarak incelenmelidir. Elasto-plastik temas iz (indentation) model ve düzleşme (flattening) modeli olarak iki modelden oluşmaktadır. Elasto-plastik modeller elastik, elasto-plastik ve tam plastik bölge olmak üzere üç temas bölgesine ayrılarak değerlendirilmektedir. balls and rings consist of different materials. Rings have been manufactured viskoelastic material. The traditional ball bearings ball-ring contact analyse with Hertzian contact theory but polymer hybrid ball bearings has not been analyse with the Hertzian contact theory. Polymer ring-ball contact has been analysed with elasto-plastic contact model instead of Hertzian contact theory. Elasto-plastic contact model has two model which are indentation and flattening. These model have been evaluated contact area as elastic region, elasto-plastic region or plastic region. Elastic contact region evaluate the same as Hertzian contact theory. Ball bearings has long lifetime to run elastic region and away from resonance condition. Friction has been caused the systems temperature to rise while the shaft-bearing system run. This condition has been caused to drop elastic modulus and stiffness of polymer bearing. Elastic modulus has been affect the bearings force capacity and stiffness. Stiffness affect the natural frequency of systems. For researching temperature effect on elastic modulus and vibration characteristic of ball bearings mathematical model has been created. Radial deep groove ball bearings geometric and material properties have been used in mathematical model. Simulations have been done via MATLAB software program. As a result, elastic modulus and natural frequency of systems' decreases with temperature rise. Although force capacity related with elastic modulus, force capacity increase with temperature rise because of critic deformation.
Polimer hibrit rulmanlada bilzikler viskoelastick malzemeden bilyalar ise farklımalzemedeüretildiklerinden temas mekaniğiçelik rulmanlada olduğu gibi elastick temas olan Hertz temas ile inclenememektedir。赫兹弹塑性材料模型。弹塑性temas iz（压痕）模型ve düzleşme（压扁）模型olarak iki modelden oluşmaktadır。弹塑性建模者弹性，弹塑性ve tam plastic bölge olmaküzereüçtemas bölkesine ayrılarak değerlendirilmektedir。球和环由不同的材料组成。吊环是由粘弹性材料制成的。传统的滚珠轴承球环接触用赫兹接触理论进行分析，而聚合物混合滚珠轴承没有用赫兹接触论进行分析。用弹塑性接触模型代替赫兹接触理论对聚合物环球接触进行了分析。弹塑性接触模型有压痕和压扁两种模型。将这些模型的接触面积分别评定为弹性区、弹塑性区或塑性区。弹性接触区的评价与赫兹接触理论相同。滚珠轴承具有较长的使用寿命，可以在弹性区域运行，并远离共振条件。轴承系统运行时，摩擦导致系统温度升高。这种情况导致聚合物轴承的弹性模量和刚度下降。弹性模量一直影响着轴承的受力能力和刚度。刚度影响系统的固有频率。为了研究温度对滚珠轴承弹性模量和振动特性的影响，建立了滚珠轴承的数学模型。径向深沟球轴承的几何特性和材料特性已被用于数学模型中。通过MATLAB软件程序进行了仿真。结果表明，系统的弹性模量和固有频率随温度的升高而降低。虽然受力能力与弹性模量有关，但由于临界变形，受力能力随着温度的升高而增加。
{"title":"Investigation of temperature effect on dynamic characteristic of polymer hybrid bearings in elastic area","authors":"Burcu Küçükoğlu Doğan, T. Karaçay","doi":"10.5505/pajes.2021.58708","DOIUrl":"https://doi.org/10.5505/pajes.2021.58708","url":null,"abstract":"Polimer hibrit rulmanlarda bilezikler viskoelastik malzemeden bilyalar ise farklı malzemeden üretildiklerinden temas mekaniği çelik rulmanlarda olduğu gibi elastik temas olan Hertz temas ile incelenememektedir. Hertz temas yerine elasto-plastik temas modelinde Hertz temasla aynı olarak değerlendirilen temas modeli kullanılarak incelenmelidir. Elasto-plastik temas iz (indentation) model ve düzleşme (flattening) modeli olarak iki modelden oluşmaktadır. Elasto-plastik modeller elastik, elasto-plastik ve tam plastik bölge olmak üzere üç temas bölgesine ayrılarak değerlendirilmektedir. balls and rings consist of different materials. Rings have been manufactured viskoelastic material. The traditional ball bearings ball-ring contact analyse with Hertzian contact theory but polymer hybrid ball bearings has not been analyse with the Hertzian contact theory. Polymer ring-ball contact has been analysed with elasto-plastic contact model instead of Hertzian contact theory. Elasto-plastic contact model has two model which are indentation and flattening. These model have been evaluated contact area as elastic region, elasto-plastic region or plastic region. Elastic contact region evaluate the same as Hertzian contact theory. Ball bearings has long lifetime to run elastic region and away from resonance condition. Friction has been caused the systems temperature to rise while the shaft-bearing system run. This condition has been caused to drop elastic modulus and stiffness of polymer bearing. Elastic modulus has been affect the bearings force capacity and stiffness. Stiffness affect the natural frequency of systems. For researching temperature effect on elastic modulus and vibration characteristic of ball bearings mathematical model has been created. Radial deep groove ball bearings geometric and material properties have been used in mathematical model. Simulations have been done via MATLAB software program. As a result, elastic modulus and natural frequency of systems' decreases with temperature rise. Although force capacity related with elastic modulus, force capacity increase with temperature rise because of critic deformation.","PeriodicalId":44807,"journal":{"name":"Pamukkale University Journal of Engineering Sciences-Pamukkale Universitesi Muhendislik Bilimleri Dergisi","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71114303","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}
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