Browsing Mechanical Engineering by Author "(ORCID 0000-0003-2212-7419 & YÖK ID 274138) Şendur, Polat"
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3-D dynamic walking trajectory generation for a bipedal exoskeleton with underactuated legs: A proof of concept
Soliman, Ahmed Fahmy; Şendur, Polat; Uğurlu, Regaip Barkan (IEEE, 2019-06)This paper presents a framework to address three dimensional (3-D) dynamic walking for a bipedal exoskeleton with underactuated legs. To achieve this goal, the framework is constructed via a trajectory generator and an ... -
Application of a disturbance observer based controller to improve vehicle ride
Şendur, Polat; Uğurlu, Regaip Barkan (Canadian Acoustical Association, 2019)In this paper the application of a disturbance observer based control algorithm is proposed to improve the vehicle ride performance of a vehicle that has magnetorheological damper (MR Damper) suspension. The vehicle is ... -
Co-ex: A torque-controllable lower body exoskeleton for dependable human-robot co-existence
Yıldırım, Mehmet Can; Kansızoğlu, Ahmet Talha; Emre, Sinan; Derman, Mustafa; Çoruk, Sinan; Soliman, Ahmed Fahmy; Şendur, Polat; Uğurlu, Regaip Barkan (IEEE, 2019-06)In this paper, we present our research study concerning the design and development of an exoskeleton that aims to provide 3D walking support with minimum number of actuators. Following a prior simulation study, the joint ... -
Computational and experimental investigation of vibration characteristics of variable unit-cell gyroid structures
Şimşek, Uğur; Gayir, C.; Kavas, B.; Şendur, Polat (International Center for Numerical Methods in Engineering, 2019)Triply periodic minimal surface (TPMS) based geometries exhibit extraordinary mechanical, thermal, electrical and acoustic properties thanks to their unique topologies. There are various types of structures in the TPMS ... -
Critical review of the factors dominating the fracture toughness of CNT reinforced polymer composites
Al-Maharma, Ahmad Yousef Mohammad; Şendur, Polat; Al-Huniti, N. (IOP Publishing, 2019-01)In this study, the main factors, which have substantial influence on fracture toughness of carbon nanotubes (CNTs)-based composites both at nano and macro scales, are discussed in detail. Based on the findings from the ... -
Design and development of a durable series elastic actuator with an optimized spring topology
Yıldırım, M. C.; Şendur, Polat; Kansızoğlu, Mehmet Taha; Uras, U.; Bilgin, Onur; Emre, Sinan; Yapıcı, Güney Güven; Arık, Mehmet; Uğurlu, Regaip Barkan (Sage, 2021-12)This paper aims to present the integrated design, development, and testing procedures for a state-of-the-art torsion-based series elastic actuator that could be reliably employed for long-term use in force-controlled robot ... -
Design sensitivity and optimization of powertrain mount system design parameters for rigid body modes and kinetic energy distributions
Şendur, Polat; Tunç, B. (Springer Nature, 2020-08-24)This study evaluates the influences of the powertrain mount design parameters on the frequencies of powertrain rigid body modes and their kinetic energy distributions (KEDs), which play an important role in the low-frequency ... -
Determining the structural life of an electric vehicle battery from road loads
Düzgün, Halil Zınar; Şendur, Polat (Walter de Gruyter, 2022-07)Although the electrical system is important in the development of electric vehicles, the durability of the battery system against mechanical loads and the performance of the battery against shock reactions are just as ... -
Effect of build parameters on the compressive behavior of additive manufactured CoCrMo lattice parts based on experimental design
Gülcan, O.; Simsek, U.; Çokgünlü, Okan; Özdemir, Mirhan; Şendur, Polat; Yapıcı, Güney Güven (MDPI, 2022-07)Due to their high specific strength, toughness, and corrosion and wear resistance characteristics, CoCrMo alloys are widely used in different industries and applications: wind turbines and jet-engine components, orthopedic ... -
The effect of curvic coupling joints on the roto rdynamic characteristics of gas turbines with tie-shaft
Şimşek, Uğur; Şendur, Polat; Yaşar, A. (Canadian Acoustical Association, 2019)The importance and use of curvic coupling joints are garnering interest in many aero-engine rotordynamics applications thanks to their benefits such as lower stress, higher service life, reliable positioning, precise ... -
The effect of interlaminar graphene nano-sheets reinforced e-glass fiber/ epoxy on low velocity impact response of a composite plate
Al-Maharma, Ahmad Yousef Mohammad; Şendur, Polat (IOP Publishing, 2018-05)In this study, we compare the inter-laminar effect of graphene nano-sheets (GNSs) and CNTs on the single and multiple dynamic impact response of E-glass fiber reinforced epoxy composite (GFEP). In the comparisons, raw GFEP ... -
The effect of spotwelds and structural adhesives on static and dynamic characteristics of vehicle body design
Tuncer, Gözde; Mansouri, Deniz; Şendur, Polat (Sage, 2021-10)Spotwelding and structural adhesive applications are two important processes in the automotive industry as they are closely associated with the functional requirements, weight, and cost of the vehicle. Even though there ... -
Effect of structural adhesives in noise, vibration and harshness (NVH) characteristics of vehicle body design
Şendur, Polat; Tunçer, Gözde (International Institute of Acoustics and Vibration, IIAV, 2018)Application of structural adhesives has received an increased interest in automotive industry due to their attractive characteristics as an alternative to other lightweight strategies. There are various modeling methods ... -
An efficient design methodology for graded surface-based lattice structures using free-size optimization and enhanced mapping method
Şimşek, Uğur; Özdemir, Mirhan; Şendur, Polat (Elsevier, 2021-11-15)In this paper, a novel Free-size Optimization based Graded Lattice Generation (FOGLG) method, that generates the functionally graded lattice (FGL) structures using free-size optimization, is proposed. In addition, the ... -
Enhancing the performance of Piezoelectric Energy Harvester under electrostatic actuation using a robust metaheuristic algorithm
Firouzi, Behnam; Abbasi, Ahmad; Şendur, Polat (Elsevier, 2023-02)This study proposes a novel shape optimization methodology based on evolutionary algorithms to maximize the harvesting energy from piezoelectric energy harvester stimulated by the β-emitted radioisotope. The parametric ... -
Experimental and numerical modal characterization for additively manufactured triply periodic minimal surface lattice structures: Comparison between free-size and homogenization-based optimization methods
Özdemir, Mirhan; Simsek, U.; Kuşer, Engin; Gayir, C. E.; Celik, A.; Şendur, Polat (Wiley, 2023-06)Homogenization-based topology optimization (HMTO) is one of the most extensively used grading methods to generate functionally graded lattice structures (FGLs). However, it requires a precharacterization of the lattices, ... -
Fatigue characteristics of continuous welded rails and the effect of residual stress on fatigue-ratchetting interaction
Mansouri, Deniz; Şendur, Polat; Yapıcı, Güney Güven (Taylor & Francis, 2020-03-16)The importance of ratchetting-fatigue interaction is garnering interest due to complex failure mechanism of rail welds under cyclic loading. The objective of this paper is to investigate the fatigue characteristics of ... -
Frequency-based dynamic topology optimization methodology for improved door closing sound quality
Tuncer, Gözde; Şendur, Polat (Sage, 2019-12-05)Door closing sound quality of a vehicle has become one of the most important customer-related quality metrics in the recent years. There has been a vast amount of information on the design parameters contributing to this ... -
High power series elastic actuator development for torque-controlled exoskeletons
Yıldırım, Mehmet Can; Kansızoğlu, Ahmet Talha; Şendur, Polat; Uğurlu, Regaip Barkan (Springer Nature, 2019)This paper presents the development procedures of a high power series elastic actuator that can be used in torque-controlled exoskeleton applications as a high-fidelity torque source. In order to provide a high torque ... -
Identification and evaluation of cracks in electrostatically actuated resonant gas sensors using Harris Hawk / Nelder Mead and perturbation methods
Firouzi, Behnam; Abbasi, Ahmad; Şendur, Polat (Techno-Press, 2021-01)In this paper we study the static deflection, natural frequency, primary resonance of an electrostatically actuated cracked gas sensor. Besides, a novel hybrid metaheuristic algorithm is proposed to detect the location and ...
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