Profile URL: https://hdl.handle.net/20.500.13091/11979
Job Title:Doç. Dr.
Email Address:aaslan@ktun.edu.tr
Main Affiliation:02.10. Department of Mechanical Engineering
Status: Current Staff
ORCID:
0000-0001-8348-3471
0000-0001-8348-3471Google Scholar:
_FRDdYYAAAAJ
_FRDdYYAAAAJWeb of Science ID:
EJP-3948-2022
EJP-3948-202213 results
Scholarly Output Search Results
Now showing 1 - 10 of 13
Article Citation - WoS: 104Citation - Scopus: 119Experimental Study and Analysis of Machinability Characteristics of Metal Matrix Composites During Drilling(ELSEVIER SCI LTD, 2019-06-01) Salur, Emin; Aslan, Abdullah; Kuntoğlu, Mustafa; Güneş, Aydın; Şahin, Ömer SinanIn this study, the metal matrix composite materials were produced by hot press with various production parameters. The drilling experiments were performed on computer numerical control vertical machining centre without cutting fluid. Analysis of variance (ANOVA) was carried out in order to determine the effects of the production parameters on thrust force and surface roughness of metal matrix composites drilled with different feed rate. The effect of production parameters such as temperature, pressure and reinforcement ratio were investigated, and their effects were presented. The optimal level for each production parameters was determined by 'Maximize the S/N ratio approach with a Taguchi design'. The test results revealed that the reinforcement ratio was the main factor affecting the surface roughness of the metal matrix composites for both feed rate. However, same singularity was not matter on thrust force due to close contribution rates of production parameters and high error rates of analysis. In literature, an increase on the thrust force and the surface roughness values was reported as the feed rate increased during machining. Nevertheless, in our MMCs system, the thrust force and the surface roughness values were in tendency of declination / as the feed rate increased which makes this study more novel research.Article Citation - WoS: 7Citation - Scopus: 7Machine Learning Models and Machinability Analysis for Comparison of Various Cooling and Lubricating Mediums During Milling of Hardox 400 Steel(Elsevier Sci Ltd, 2024-10-01) Aslan, AbdullahMartensitic steels are widely used in many areas such as automotive, mining, and agriculture mostly thanks to their thermal loading ability property. On the other hand, these special steels exhibit extreme tool wear tendency and low surface quality which can be associated with abrasive resistance. This situation makes this steel hard-tocut and requires further investigation with several approaches. Sustainable machining environments are highly effective as modern strategies to improve the machinability index. Also, machine learning models have pivotal role on decreasing the total consumption in the way of lean manufacturing. In the light of above-mentioned information, this work focuses on the machining performances and optimization of dry, flood, and MQL conditions during the milling of Hardox 400 martensitic stainless steel. A novel approach was applied with using several cutting environments and machine learning models to enhance machinability of Hardox which is an industrially important material. Results were analyzed with different machine learning models using heat map and decision trees. Seemingly, cutting fluid assistance in the milling of Hardox steel is critical where flood and MQL provided a considerable effect on the tool wear for reducing it under some level. Also, this technology was found useful in determining the best conditions of machinability in terms of surface roughness, chip morphology, energy consumption, and cutting temperatures. Machine learning models provided hopeful results in analyzing the correlations between parameters used in the model. In machine learning, the heat map being close to 1 and the MSE and MAE values being close to 0 indicated that the model was suitable. This study is expected to observe the contributions of different types of cutting environments to the machinability criteria during milling of industrially important materials.Article Citation - WoS: 18Citation - Scopus: 20Optimization Study on Surface Roughness and Tribological Behavior of Recycled Cast Iron Reinforced Bronze Mmcs Produced by Hot Pressing(MDPI, 2021-06-17) Güneş, Aydın; Şahin, Ömer Sinan; Düzcükoğlu, Hayrettin; Salur, Emin; Aslan, Abdullah; Kuntoğlu, Mustafa; Pimenov, Danil YurievichSurface roughness reflects the quality of many operational parameters, namely service life, wear characteristics, working performance and tribological behavior of the produced part. Therefore, tribological performance is critical for the components used as tandem parts, especially for the MMCs (Metal Matrix Composites) which are a unique class of materials having extensive application areas such as aerospace, aeronautics, marine engineering and the defense industry. Current work covers the optimization study of production parameters for surface roughness and tribological indicators of newly produced cast iron reinforced bronze MMCs. In this context, two levels of temperature (400 and 450 degrees C), three levels of pressure (480, 640 and 820 MPa) and seven levels of reinforcement ratios (60/40, 70/30, 80/20, 90/10, 100/0 of GGG40/CuSn10, pure bronze-as received and pure cast iron-as received) are considered. According to the findings obtained by Taguchi's signal-to-noise ratios, the reinforcement ratio has a dominant effect on surface roughness parameters (Ra and Rz), the coefficient of friction and the weight loss in different levels. In addition, 100/0 reinforced GGG40/CuSn10 gives minimum surface roughness, pure cast iron provides the best weight loss and pure bronze offers the desired coefficient of friction. The results showed the importance of material ingredients on mechanical properties by comparing a wide range of samples from starting the production phase, which provides a perspective for manufacturers to meet the market supply as per human requirements.Article Kompozit Malzemelerin Tornalanması Esnasında Oluşan Kesme Kuvvetlerinin Optimizasyonu(2020-09-30) Salur, Emin; Aslan, Abdullah; Kuntoğlu, Mustafa; Güneş, Aydın; Şahin, Ömer SinanKompozit malzemeler kullanılacağı yere göre tasarlanan ve üretilen malzemelerdir. Dolayısıyla kompozit malzemeler aynı üretim metodu kullanılarak kullanılacağı yere göre farklı üretim parametrelerinde üretilebilir. Farklı üretim parametrelerinde üretilen kompozit malzemeler farklı mekanik özelliklere sahip olacağı için bu durum kompozit malzemelerin işlenebilirlik özelliklerini etkiler. Bu sebeple kompozit malzemelerin işlenmesi esnasında oluşan kesme kuvvetlerinin tespit edilmesi ve optimizasyonu önem arz etmektedir. Bu kapsamda, 3 farklı üretim sıcaklığı (350, 400 ve 450?C) ve basıncı (480, 640 ve 820 MPa) ile 4 farklı karışım oranında (ağ. %10, ağ. %20, ağ. %30, ağ. %40) üretilen dökme demir (GGG-40) takviyeli ve bronz matrisli (CuSn10) kompozit malzemelerin kuru kesme şartlarında tornalanması esnasında kesme kuvvetlerinin optimizasyonu gerçekleştirilmiştir. Tam faktöriyel tasarım prensibi ile 36 deney yapılmış ve üç eksende kesme kuvvetleri ölçümü alınarak bileşke kesme kuvveti hesabı yapılmıştır. Deneyler esnasında kesme şartları sabit tutulmuştur (kesme hızı=50 m/dak, ilerleme=0,128 mm/dev ve talaş derinliği=1 mm). Varyans analizi (ANOVA) neticesinde bileşke kesme kuvveti üzerine en çok etkisi olan parametrenin %80 katkı oranıyla birlikte üretim basıncı olduğu tespit edilmiştir.Master Thesis Investigation of the Structural Strength of a Carbon Fiber Reinforced Spar in an UAV Wing Based on Cross-Section Profile and Ply Orientations Using the Finite Element Method(2025) Göçen, Ali Mert; Aslan, AbdullahYüksek dayanım, düşük yoğunluk, yorulma dayanımı gibi avantajları dolayısıyla karbonfiber takviyeli kompozitler havacılık ve uzay sektöründe yaygın olarak kullanılmaktadır. Özellikle hafif hava platformlarının kanat ve gövde yapılarında da karbonfiber takviyeli kompozit malzemelerin kullanımı günden güne artmaktadır. Bu konuda literatürde çeşitli çalışmalar mevcuttur. Bu tez çalışmasında, hava araçlarının kritik bileşenlerinden biri olan kanat yapılarında kullanılan karbonfiber takviyeli kompozit kirişlerin kesit profillerine ve fiber serim açılarına bağlı yapısal davranışları numerik olarak incelenmiştir. Bu bağlamda, I, C ve kutu profillere sahip kiriş yapılarının 0˚, ±45˚ fiber kombinasyonlarında, aerodinamik yüklemeler altında sonlu elemanlar modeli oluşturulmuştur. Belirlenen hava aracı konfigürasyonu için bir kanat tasarımı yapılmış, bu kanat tasarımı üzerinde gerçekleştirilen HAD (Hesaplamalı Akışkanlar Dinamiği) analizleri sonucunda elde edilen basınç yükleri, tek yönlü Akışkan-Yapı etkileşimi yöntemi ile yapısal modele aktarılarak kanat yapılarının statik analizleri gerçekleştirilmiştir. Çıkan sonuçlara göre kirişlerin yapısal davranışları kesit profiline ve serim açılarına bağlı olarak değerlendirilmiştir. Bulunan sonuçlarda ±45˚ fiber kullanımında IRF (Ters Emniyet Katsayısı) değerlerinde ani düşüşler görülse de 0° fiberlerde IRF değerlerinin arttığı ve dalgalanmalar olduğu gözlemlenmiştir. Bu dalgalanmalar ±45˚ fiberlerin tüm katmanlara oranı arttıkça artmaktadır. Sadece 0° fiberlerin kullanıldığı oryantasyonlarda ise oldukça düzenli bir IRF dağılımı olduğu gözlemlenmiştir. Ayrıca ±45˚ fiber kullanımının taşıma ve sürükleme yönlerinde deformasyonları da arttırdığı görülmüştür. Profil kesitlerinin karşılaştırmasında ise kutu profil dayanımsal olarak öne çıkarken C profil ağırlık bakımından daha avantajlıdır. I profil ise ağırlık bakımından C profile yakın olsa da hem dayanım hem de üretim zorluğu açısından diğer profillerin gerisinde kalmıştır.Article Citation - WoS: 55Citation - Scopus: 58The Effects of Harsh Aging Environments on the Properties of Neat and Mwcnt Reinforced Epoxy Resins(ELSEVIER SCI LTD, 2021-02-01) Aslan, Abdullah; Salur, Emin; Düzcükoğlu, Hayrettin; Şahin, Ömer Sinan; Ekrem, Mürsel; Sinan Şahin, ÖmerIn this study, the effects of different harsh aging environments on the chemical and mechanical properties of neat and multiwall carbon nanotubes (MWCNT) reinforced epoxy resins were investigated. The neat and 1 wt% MWCNT reinforced epoxy resins were exposed to four different corrosive environments, namely deionized water, NaCl solution (10 wt% NaCl), H2SO4 solution (10 wt% H2SO4), and HCl solution (10 wt% HCl. The mass variation results revealed that the highest absorption rates were found in specimens aged in both acidic environments. The highest amount of absorption was observed in the H2SO4 environment, measured approximately 3% for neat epoxy, and 6.5% for MWCNT reinforced epoxy resin. FT-IR spectrums showed that the most affected peaks belong to specimens aged in both acidic environments. Tensile test results revealed that the aging process in H2SO4 solution and deionized water deteriorated the strength of specimens. According to the literature, it was reported that the strength of specimens aged in NaCl solution environment is decreased. However, the same trend has not been in this study. In our study, the strength of specimens aged in NaCl solution environment increased impressively by 29%, which makes this study more striking. Another important point analyzed from the tensile test results was that the MWCNT nanoparticle reinforcement adversely affects the strength of the epoxy resin. So, it can be clearly stated that the use of expensive MWCNTs as filler of epoxy resin is not useful to improve its aging resistance. The scanning electron microscope (SEM) and optical microscope images showed that acidic environments result in different fracture mechanisms from typical polymer damaged surfaces reported in available researches. (C) 2020 Elsevier Ltd. All rights reserved.Article Citation - WoS: 17Citation - Scopus: 19Evaluation of the Role of Dry and Mql Regimes on Machining and Sustainability Index of Strenx 900 Steel(MDPI, 2022-11-09) Aslan, Abdullah; Salur, Emin; Kuntoğlu, MustafaSustainable technologies draw attention in the machining industry thanks to their contributions in many aspects such as ecological, economic, and technological. Minimum quantity lubrication (MQL) is one of these techniques that enable to convey of the high pressurized cutting fluid toward the cutting zone as small oil particulates. This study examines the potency of MQL technology versus dry conditions on the machining quality during the milling of structural Strenx 900 steel within the sustainability index. High strength and toughness properties make this steel a hard-to-cut material providing an important opportunity to test the performances of dry and MQL environments. The outcomes of the experimental data demonstrated that MQL is superior in enhancing the quality of significant machining characteristics namely surface roughness (up to 35%), flank wear (up to 94%), wear mechanisms, cutting energy (up to 28%), and cutting temperatures (up to 14%). Furthermore, after analyzing the main headings of the sustainable indicators, MQL provided the same (+5) desirability value with a dry (+5) medium. This experimental work presents a comparative approach for improved machinability of industrially important materials by questioning the impact of sustainable methods.Article Citation - WoS: 10Citation - Scopus: 12The Effect of Ultrasonic Cleaning Upon Mechanical Properties of Metal Matrix Composites(SPRINGER INDIA, 2020-11-20) Aslan, Abdullah; Salur, Emin; Güneş, Aydın; Şahin, Ömer Sinan; Karadağ, Hakan Burak; Akdemir, AhmetThe aim of this study is to produce composite materials by recycling metallic chips, which are found in industry as a large amount of waste. In addition, it is aimed to investigate the effect of ultrasonic cleaning process as the consolidation behavior and mechanical properties of bulk material directly depend on the cleaning of waste metallic chips. In the present investigation, spheroidal graphite cast iron (GGG-40) was employed as reinforcement material in tin bronze (CuSn10) matrix system. GGG-40 and CuSn10 chips were cleaned by ultrasonic agitation in water for 20 and 40 min. Consolidation of the cleaned metallic chips was achieved with a hot press by applying 820 MPa pressure under 450 degrees C, and the cylindrical and prismatic metal matrix composite materials with different reinforcement ratios were successfully produced. Energy-dispersive X-ray and scanning electron microscopy analyses were carried out to determine the amount of the oxide removed from the surfaces of chips. The mechanical properties of the samples were determined by hardness, porosity, compression and three-point bending tests. According to the results of the analyses, it was found that CuSn10 surfaces were cleaned from 20%, 50% and GGG-40 surfaces from 35%, 39% oxides during 20- and 40-min cleaning time, respectively. In addition, the results of the mechanical tests revealed that increased ultrasonic cleaning time improves the consolidation quality of metallic chips and it provides successful covering of GGG-40 chips by the CuSn10 chips as a result of a better structural integrity. New machinery parts with high mechanical properties can be produced as a result of recycling of the metallic chips which are available as waste in industry by appropriate cleaning process and this situation makes this study more innovative, economical and environmentally friendly research.Review Citation - WoS: 3Citation - Scopus: 4A Review on Surface Morphology and Tribological Behavior of Titanium Alloys Via Slm Processing(EMERALD GROUP PUBLISHING LTD, 2024) Kuntoglu, Mustafa; Salur, Emin; Gupta, Munish Kumar; Waqar, Saad; Szczotkarz, Natalia; Vashishtha, Govind; Korkmaz, Mehmet Erdi; Binali, RüstemPurpose-Additive manufacturing became the most popular method as it enables the production of light-weight and high-density parts in effective way. Selective laser melting (SLM) is preferred by means of producing a component with good surface quality and near-net shape even if it has complex form. Titanium alloys have been extensively used in engineering covering a variety of sectors such as aeronautical, chemical, automotive and defense industry with its unique material properties. Therefore, the purpose of this review is to study the tribological behavior and surface integrity that reflects the thermal and mechanical performances of the fabricated parts. Design/methodology/approach-This paper is focused on the tribological and surface integrity aspects of SLM-produced titanium alloy components. It is aimed to outline the effect of SLM process parameters on tribology and surface integrity first. Then, thermal, thermal heat, thermomechanical and postprocessing surface treatments such as peening, surface modification and coatings are highlighted in the light of literature review. Findings-This work studied the effects of particle characteristics (e.g. size, shape, distributions, flowability and morphology) on tribological performance according to an extensive literature survey. Originality/value-This study addresses this blind spot in existing industrial-academic knowledge and goals to determine the impact of SLM process parameters, posttreatments (especially peening operations) and particle characteristics on the SLMed Ti-based alloys, which are increasingly used in biomedical applications as well as other many applications ranging from automobile, aero, aviation, maritime, etc. This review paper is created with the intention of providing deep investigation on the important material characteristics of titanium alloy-based components, which can be useful for the several engineering sectors.Article The Influences of Near-Dry Lubricating and Dry Mediums on Surface Roughness and Other Machinability Indicators in Hard Turning Aisi 5115(2025) Kuntoğlu, Mustafa; Şalvarcıoğlu, Zeynep Sude; Aslan, Abdullah; Binali, RüstemAISI 5115 çeliği, mukavemeti ve aşınma direnci sayesinde makinelerde yaygın olarak kullanılan sertleştirilmiş düşük alaşımlı bir çelik türüdür. Bu tür yüzey sertleştirilmiş malzemelerin işlenmesi, yüksek kesme kuvvetleri, takım aşınması ve sertlikten kaynaklanan düşük yüzey kalitesi sorunları nedeniyle zorluklar sunmaktadır. Bu nedenle, kesme ortamının seçimi bu noktada kritik öneme sahiptir ve özellikle kuru veya Minimum Miktarda Yağlama (MMY) yöntemi, çevresel avantajları ve artan enerji verimliliği ile son yıllarda ön plana çıkmıştır. Bu çalışma, sertleştirilmiş AISI 5115 çeliklerinin tornalanması sırasında MMY ve kuru ortam koşullarının yüzey pürüzlülüğü, kesme kuvvetleri ve enerji tüketimi üzerindeki etkilerini deneysel olarak araştırmaktadır. Tornalama koşulları kuru olup, MQL için bitkisel bazlı yağ kullanılmıştır. MMY uygulamasının yüzey pürüzlülüğünü azalttığı, daha yüksek kaliteli yüzeyler sağladığı, kesme kuvvetlerini azalttığı ve enerji tüketimini optimize ettiği belirlenmiştir. Bu çalışmanın yeniliği, enerji tüketimi, kesme kuvvetleri ve yüzey kalitesi de dahil olmak üzere 5115 alaşımlı çeliğin çevresel ve işlenebilirlik faktörlerinin kapsamlı bir analizini sunmasıdır.
Research Topics
Domains
Physical Sciences
Fields
EngineeringMaterials Science
Subfields
Mechanical EngineeringElectrical and Electronic EngineeringCeramics and Composites
Specific Research Areas
Aluminum Alloys Composites Properties
Advanced machining processes and optimization
Advanced Machining and Optimization Techniques
Bauxite Residue and Utilization
Advanced ceramic materials synthesis
Sustainable Development Goals
9INDUSTRY, INNOVATION AND INFRASTRUCTURE
7
Research Products
13CLIMATE ACTION
1
Research Products
2ZERO HUNGER
1
Research Products
12RESPONSIBLE CONSUMPTION AND PRODUCTION
1
Research Products
This researcher does not have a Scopus ID.
Documents
25
Citations
1057
Publication Collaboration
| Affiliation Name | Count |
|---|---|
| Selçuk University | 29 |
| Konya Technical University | 14 |
| South Ural State University | 6 |
| Necmettin Erbakan University | 6 |
| Abdullah Gül University | 6 |
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Data obtained from OpenAlex
| Journal | Count |
|---|---|
| MATERIALS | 2 |
| Lubricants | 2 |
| CONSTRUCTION AND BUILDING MATERIALS | 1 |
| DergiPark (Istanbul University) | 1 |
| Rapid Prototyping Journal | 1 |
Current Page: 1 / 2
Scholarly Output
13
Articles
11
Views / Downloads
30/52
Supervised MSc Theses
1
Supervised PhD Theses
0
WoS Citation Count
226
Scopus Citation Count
252
Patents
0
Projects
0
WoS Citations per Publication
17.38
Scopus Citations per Publication
19.38
Open Access Source
7
Supervised Theses
1
Scopus Quartile Distribution
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