Totuk, Onat Halis
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Totuk, Onat
Totuk, O.
Totuk, O.H.
Totuk, O.
Totuk, O.H.
Job Title
Dr. Öğr. Üyesi
Email Address
onattotuk@cankaya.edu.tr
Main Affiliation
06.08. Mekatronik Mühendisliği
Mekatronik Mühendisliği
06. Mühendislik Fakültesi
01. Çankaya Üniversitesi
Mekatronik Mühendisliği
06. Mühendislik Fakültesi
01. Çankaya Üniversitesi
Status
Current Staff
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Scopus Author ID
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Sustainable Development Goals
13
CLIMATE ACTION
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Research Products
8
DECENT WORK AND ECONOMIC GROWTH
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3
GOOD HEALTH AND WELL-BEING
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LIFE ON LAND
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PARTNERSHIPS FOR THE GOALS
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LIFE BELOW WATER
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QUALITY EDUCATION
1
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11
SUSTAINABLE CITIES AND COMMUNITIES
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6
CLEAN WATER AND SANITATION
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10
REDUCED INEQUALITIES
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9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
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RESPONSIBLE CONSUMPTION AND PRODUCTION
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2
ZERO HUNGER
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NO POVERTY
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AFFORDABLE AND CLEAN ENERGY
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5
GENDER EQUALITY
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PEACE, JUSTICE AND STRONG INSTITUTIONS
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Documents
7
Citations
18
h-index
3
Documents
4
Citations
7
Scholarly Output
10
Articles
7
Views / Downloads
17/0
Supervised MSc Theses
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Supervised PhD Theses
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WoS Citation Count
0
Scopus Citation Count
9
WoS h-index
0
Scopus h-index
2
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WoS Citations per Publication
0.00
Scopus Citations per Publication
0.90
Open Access Source
7
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| Journal | Count |
|---|---|
| International Journal of 3D Printing Technologies and Digital Industry | 2 |
| International Journal of Mechanical Engineering Education | 1 |
| Journal of Scientific & Industrial Research | 1 |
| Kocaeli Journal of Science and Engineering | 1 |
| Mechanisms and Machine Science -- 3rd International Workshop IFToMM for Sustainable Development Goals, I4SDG 2025 -- 9 June 2025 through 11 June 2025 -- Lamezia Terme -- 332369 | 1 |
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Now showing 1 - 10 of 10
Article Citation - Scopus: 5Fused Filament Fabrication in Cad Education: a Closed-Loop Approach(Sage Publications inc, 2025) Totuk, Onat Halis; Selvi, Ozguen; Akar, SametIntegrating low-cost fused filament fabrication 3D printing as a foundation for learning 3D modelling is explored. This method blends traditional computer aided design (CAD) instruction with additive manufacturing possibilities. Experimental results demonstrate increased comprehension speed and reduced learning time. This hands-on approach empowers students by enabling direct engagement with the modelling process. Analogous to reverse engineering, the strategy instructs engineering students from final product to model creation, closing the gap between theory and practice. Incorporating 3D printing bridges this divide, enhancing understanding, creativity and problem-solving. The study underscores technology's influence on learning strategies, aligning with the surge of 3D printing in education. Results link advanced design technology usage to improved student performance, with 3D-printed materials yielding 45% higher grades and 30% faster task completion. This study advocates curricular advancement for design-focused careers through enhanced technology integration and favourable 3D printing model reception.Conference Object Citation - Scopus: 4Small-Scale Mechanical Properties of Additively Manufactured Ti-6al(The University of Texas at Austin, 2020) Totuk, Onat Halis; Haghshenas, M.; Totuk, O.; Masoomi, M.; Thompson, S.M.; Shamsaei, N.; Mekatronik MühendisliğiThis article aims at studying microstructure and nano/micro-scale mechanical responses of Ti-6Al4V fabricated using a Laser-based Powder Bed Fusion (L-PBF) method. To this end, an instrumented depth-sensing nanoindentation system has been used to assess hardness, Young's modulus, strain rate sensitivity and rate dependent plastic deformation of the alloy at different build Orientations (in the Z-plane and X-plane) at ambient temperature. Indentation tests were conducted at constant proportional loading rate of 15 mN/s in a depth-controlled (hind=2000 nm) testing regime. The Microstructure characterizations were performed using optical and scanning electron microscopy to assess the correlations to the mechanical properties achieved by the nanoindentation testing to better establish structure-property relationships for L-PBF Ti-6Al-4V. It is expected that the fine microstructure, developed by fast solidification during the L-PBF process, to directly contribute to the nanoindentation measurements at different strain rates. Copyright © SFF 2017.All rights reserved.Article Design, Optimization, Simulation, and Implementation of a 3d Printed Soft Robotic Peristaltic Pump(Iop Publishing Ltd, 2024) Totuk, Onat Halis; Mistikoglu, Selcuk; Guvenc, Mehmet AliThis study presents an innovative approach to fluidic pumping using soft robotics, designed to circulate fluid through soft conduits for delicate environments like blood streams where traditional peristaltic pumps may not be feasible. A novel soft robotic peristaltic pump is optimized and implemented, featuring 3D printed ring-shaped actuators and a PDMS pipe housing a Newtonian fluid. The design includes a three-stage actuator ring structure, actuated sequentially for peristaltic motion. A parametric finite element model predicts the required pressure, and the Mooney-Rivlin 5 Parameters hyper-elastic material model ensures accurate material properties. Optimization uses response surface analysis in Minitab and MATLAB Simulink Simscape simulations to achieve maximum flow rate with minimal power and pressure. Experimental validation confirms the simulations, achieving an optimal flow rate of 0.27 ml s(-1) at a 450 ms cycle, with minor discrepancies due to friction and measurement errors. This study demonstrates the scalability of linearly sequenced soft squeeze actuators into an effective pump, validated by both simulation and experiments. Future applications include medical devices addressing deep venous thrombosis, with further research exploring control theory for optimization and comparing performance with conventional pumps to enhance practical applicability.Article Anisotropic Effects on Topology Optimization for Additive Manufacturing in Aerospace Applications(2025) Totuk, Onat; Akar, Samet; Özkara, MustafaThis study investigates the effects of anisotropy on topology optimization in additive manufacturing, with a focus on aerospace applications. Topology optimization, a powerful design method for lightweight structures, is increasingly relevant in aerospace due to the adoption of additive manufacturing techniques. However, the anisotropic nature of materials used in these processes is often overlooked. This research compares isotropic and anisotropic analyses using TiAl4V and Epoxy Carbon UD Prepreg materials, examining stress distributions and optimization times. A cubic sample (40 mm) was subjected to various loading conditions, with a 10% mass retention constraint. Results demonstrate significant differences in stress levels and solution times between isotropic and anisotropic optimizations. For TiAl4V, the anisotropic analysis revealed notable variations in stress distribution and optimization times compared to isotropic assumptions. The composite material analysis further emphasized the importance of considering directional properties in optimization. Additionally, comparing aluminum and titanium components highlighted potential weight savings in certain applications. This study underscores the importance of incorporating anisotropic material properties in topology optimization for additive manufacturing, particularly in aerospace applications where weight reduction and structural integrity are critical. The findings suggest that anisotropic optimization could lead to more efficient designs and reduced computational times in specific loading scenarios.Article Scamper Metodoloji Çerçevesi ile Makine Mühendisliği Tasarım Dersinin Çıktısının Geliştirilmesi(2024) Totuk, OnatMühendislik eğitiminde metodoloji çerçeveleri, mühendislik disiplinlerinde eğitim uygulamalarını tasarlamak, uygulamak ve değerlendirmek için kullanılan yapılandırılmış yaklaşımlar veya modellerdir. Bu çerçeveler, öğretim ve öğrenme sürecini düzenlemek ve optimize etmek için sistemli bir yol sağlar, bu sayede mühendislik öğrencilerinin kapsamlı ve etkili bir eğitim almasını sağlanır. SCAMPER, problem çözme veya proje geliştirme için yeni fikirler ve yaklaşımlar üretmek için kullanılan yaratıcı düşünme tekniğidir. SCAMPER’ daki her harf, hedeflenen süreci geliştirmek için farklı bir ipucunu temsil eder. Bu ipuçları sırasıyla yerine koyma, birleştirme, uyarlama, değiştirme, başka bir amaçla kullanma, eleme ve tersine çevirme anlamına gelir. SCAMPER’ı Makine Mühendisliği eğitimi için bir metodoloji çerçevesi olarak evrimleştirmek, prensiplerini ve ipuçlarını mühendislik öğrencilerinin ihtiyaçlarına ve zorluklarına özgü olarak adapte etmeyi içerir. Bu çalışma, SCAMPER metodolojisinin makine mühendisliği eğitimi için bir eğitim çerçevesi olarak kullanımını ve son sınıf öğrencilerine verilen Makine Mühendisliği Tasarımı dersine uygulanmasını, önceki derslerden elde edilen deneyimlere dayalı önerilen örneklerle sunmaktadırArticle Modeling and Optimization of a Peano-Hasel Actuator Peristaltic Pump(Natl inst Science Communication-niscair, 2023) Mistikoglu, Selcuk; Totuk, Onat HalisPeano-Hasel (hydraulically amplified self-healing electrostatic) pumps are crucial devices with unique mechanisms and versatile applications. They simulate muscle contractions to move fluids or materials through tubes. The Peano-Hasel method, a specific design, achieves flow by compressing a segmented tube externally. Exploring the design aspects of Peano-Hasel pumps can lead to advancements in optimizing their performance, efficiency, reliability, and control systems. This paper presents a novel method of peristaltic pumping on soft pipes using Peano-HASEL actuators. In the study, a design evaluation of an external ring-type pump over a PDMS (Polydimethylsiloxane -commonly referred to as silicone) tube containing Newtonian fluids is made, and a novel multi-pouch ring shape design is proposed. Our method utilizes a peripheral and compact design that allows for more efficient sinusoidal pumping action. The close proximity of the rings in the longitudinal direction enhances the effectiveness of the pumping process. The actuator is analytically modeled and optimized for maximum areal contraction and flow rate using a differential evolution algorithm. A MATLAB Simulink Simscape model is generated, and the system is simulated. As a result, an optimal solution for the number of pouches was found to be eight, considering ring geometry and applicability. It was also seen from the simulation that a sinusoidal squeezing scheme of a ring-type pump creates the desired action. Based on the analytical model presented, it has been demonstrated that the optimal flow rate is achieved when there are eight pouches, and they are fully circular after being energized.Book Part Integrating Multidisciplinary DBR in Mechanical Engineering Education, Challenges, and Opportunities: Innovating ME Education Via Cross-Discipline DBR(IGI Global, 2025) Totuk, O.H.; Selvi, O.This chapter explores the challenges and opportunities of integrating multidisciplinary design-based research (DBR) into mechanical engineering education. As engineering problems become more complex, there is a growing need for graduates who can work across disciplines. DBR enhances the mechanical engineering curriculum by fostering collaboration, promoting real-world problem-solving skills, and bridging theory and practice. The chapter addresses challenges in implementing DBR, including resistance to change, resource constraints, and assessment issues, while highlighting opportunities for improved student engagement, creativity, and industry partnerships. Case studies of successful DBR integration in mechanical engineering programs are presented, showcasing innovative approaches and outcomes. Finally, the chapter proposes strategies to overcome barriers and maximize the benefits of multidisciplinary DBR, contributing valuable insights for educators seeking to prepare students for the evolving demands of the engineering profession. © 2025 by IGI Global Scientific Publishing.Conference Object Integrating Un Sustainable Development Goals Into Mechanical Engineering Electives: a Modular Approach(Springer Science and Business Media B.V., 2025) Totuk, O.H.; Selvi, O.; Ceccarelli, M.This paper presents an innovative approach to incorporating the United Nations Sustainable Development Goals (SDGs) into the Mechanical Engineering curriculum, focusing on elective courses in the third and fourth years of study. The proposed method introduces a standardized 3-h module for each elective, comprising two hours of theoretical instruction and one hour of practical application. This modular approach ensures consistent exposure to sustainability concepts across various specialized topics within Mechanical Engineering. The theoretical component covers relevant SDGs, their implications for engineering practice, and potential technological solutions. The practical segment includes tailored activities, labs, or design challenges that apply sustainability principles to the specific subject matter of each elective. This integration strategy not only enhances students’ understanding of global sustainability challenges but also equips them with the skills to address these issues within their future engineering careers. The paper discusses the development process of these modules, potential challenges in implementation, and preliminary feedback from faculty and students. By systematically embedding sustainability into existing courses, this approach offers a scalable and efficient method for engineering programs to produce graduates who are both technically proficient and sustainability-conscious, ready to contribute to a more sustainable future. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.Article Strengthening Effect of Flooding in 3d Printed Porous Soft Robotics Scaffolds(2021) Arslan, Ozan; Selvi, Özgün; Mıstıkoglu, Selçuk; Totuk, OnatThis study aims to design and 3D print porous elements for soft robotic applications and test the stiffness changes when the cavities are filled with liquids. When an elastic element has porous scaffolds, the stiffness can be controlled by filling the cavities with a liquid. A gyroid structure is selected for the design and evaluation of the characteristics of elements. The stiffness of the element in both non-filled and liquid-filled modes is analyzed using FEM simulation Software in two modes where simple support with central loading and compressive uniform loading. A porous test structure is created and tested in these modes for observation of the stiffness change. Employing an FDM printer in this project enabled us to make our thoughts to reality. The results show that liquid-filling can be used as a stiffening method for porous scaffolds in soft robotic applications.Article Characterization of 3d Printed Conductive Flexible Materials for Soft Robotic Applications(2024) Arslan, Ozan; Selvi, Özgün; Totuk, OnatSoft robots composed of compliant and flexible materials can safely interact with humans and adapt to unstructured environments. However, integrating sensors, actuators, and control circuits into soft structures remains challenging. Additive manufacturing shows promise for fabricating soft robots with embedded electronics using conductive flexible composites. Nevertheless, there is still a limited understanding of the electromechanical behavior of 3D-printed conductive structures when subjected to the types of strains relevant to soft robotics applications. Optimized design requires characterizing the interplay between a soft component's changing shape and electrical properties during deformation. This study investigates the application of 3D printing technology to fabricate various geometries using a conductive, flexible material for soft robotic applications. The primary objective is to understand and characterize the behavior of differently shaped 3D-printed conductive materials under various mechanical stresses. Two distinct test setups are designed for conducting bending and tensile tests on the produced materials. Diverse geometries are printed using the conductive flexible material with desirable mechanical and electrical properties to employ tensile and bending tests. The experiments reveal a direct correlation between shape change and electrical resistance of the 3D printed materials, providing valuable insights into their adaptability for soft robotics. According to numerical results, honeycomb profiles are found to be the most linear and stable profile type. This research not only contributes to the field of flexible conductive materials but also lays the foundation for integrating these materials into future engineering designs, potentially enabling the development of highly responsive and adaptable devices for various industries.
