Makina Mühendisliği Bölümü Tez Koleksiyonu
Recent Submissions
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WEIGHT REDUCTION AND MATERIAL CHARACTERIZATION IN A PART USED IN AVIATION APPLICATIONS PRODUCED BY ADDITIVE MANUFACTURING METHOD
(Fen Bilimleri Enstitüsü, 2023)Optimizing design in the aviation sector without altering load paths, achieving fuel savings through weight reduction, reducing carbon footprint, and gaining high maneuverability for aircraft through such improvements ... -
Immersed Boundary Method for Rotorcraft Aerodynamics Using OpenFOAM
(Fen Bilimleri Enstitüsü, 2022)The rotorcraft CFD literature review showed that efficient, easy to apply, and computationally less expensive methods are still a need for the design and performance predictions of rotorcraft. Immersed Boundary Method ... -
A Novel Constant Force Compliant Gripper Design
(Fen Bilimleri Enstitüsü, 2023-04)The aim of this thesis is to design a novel constant-force compliant gripper mechanism. The design is a monolithic holding mechanism which is fixed on one side and free on the gripper side. The mechanism has four compliant ... -
Sensitivity Analysis of Material Parameters on the Micro-Scale Stress Distribution in Fiber Reinforced Composites
(Fen Bilimleri Enstitüsü, 2023)Knowing the mechanical behavior of fiber-reinforced composites are important since unidirectional (UD) composite materials have been widely used in many industries. Different methods in macro-scale and micro-scale have ... -
Handling Quality Oriented Fault Tolerant Longitudinal Flight Control Algorithm Design For A Jet Trainer Aircraft
(Fen Bilimleri Enstitüsü, 2023)In the scope of the thesis an alternative longitudinal flight control algorithm, which satisfies predefined stability and performance requirements, in case of a specific fault is aimed for a jet trainer aircraft. Base ... -
Crack Propagation During Actuation Cycles of The Nitihf High Temperature Shape Memory Alloys
(Fen Bilimleri Enstitüsü, 2023)Shape Memory Alloys (SMAs) are very special materials with their distinctive ability to recover their shape change by phase transformation via mechanical and/or thermal stimulations. When the alloy heated above a certain ... -
Determining the Effects of Transformation Induced Plasticity and Creep Plasticity on the Functional Fatigue Life of NiTiHf High Temperature Shape Memory Alloys
(Fen Bilimleri Enstitüsü, 2023)With their high work output during thermal cycling under load, NiTiHf high temperature shape memory alloys became promising candidates for smart actuator design for aerospace industry. However, high temperature applications ... -
Design, Fabrication and Control of A Novel Shape Memory Alloy (SMA)-Wire-Based Flexible Composite Actuator
(Fen Bilimleri Enstitüsü, 2023)Soft actuators are frequently seen in many design areas. They can adapt to the desired motion and do not harm the material they touch. These features give many ideas to designers. In this thesis, such a soft composite ... -
Investigation of Advanced Current Characteristics on Expulsion Formation and Characteristics of Resistance Spot Welded Advanced High Strength Steels
(Fen Bilimleri Enstitüsü, 2023)In this thesis, the experiments with HSLA600 which is widely used in industry will be investigated. Single, double and triple pulse welding will be applied to the materials to obtain the biggest, homogenous nugget geometry ... -
Electrospinning of Super Tough Nylon 6,6 Fibers and Their Use in Layered Composites
(Fen Bilimleri Enstitüsü, 2023)Despite their obvious advantages in applications that require a high strength-to-weight ratio, delamination problems in layered composite structures continue to be a major drawback. Interleaving the layers with films or ... -
Adjustment of the Thermal Expansion Coefficient of 3D Printed Composite Tools for Composite Overwrapped Pressure Vessels
(Fen Bilimleri Enstitüsü, 2023)A thermal mismatch problem between a curable composite and the tool material can negatively impact the cured product's geometrical precision and structural integrity, leading to insufficient quality or, even worse, reduced ... -
Resıstance Spot Weldıng Of Ultra Hıgh Strength Steel Sheets Wıth Alumınum Materıals
(Fen Bilimleri Enstitüsü, 2023-01-24)This thesis aims to examine the joining of steel sheets with a yield strength of up to 1500MPa and aluminum materials by using resistance spot welding (RSW). Effect of electrode geometry and its combinations on the quality ... -
Hydrodynamic Optimization of the Submarine with a Fully Parametric CAD Model
(Fen Bilimleri Enstitüsü, 2023-02)This study was conducted to compare the performance of four different optimization studies that can be done to reduce the drag force that a submarine is exposed to in fully submerged conditions. The submarine used in the ... -
Effect of Hot Extrusion, Annealing and Warm Rolling on the Functional Fatigue Behaviors of Nitihf High Temperature Shape Memory Alloys
(Fen Bilimleri Enstitüsü, 2023)High temperature shape memory alloys (HTSMAs) have a wide range of application in aerospace, automotive and petroleum industries as high temperature actuators. NiTiHf HTSMAs are the most potential alloys compared to the ... -
Investigation of Bending Characteristic of 5XXX – Series Aluminum Alloys
(Fen Bilimleri Enstitüsü, 2023)In this study, strains and fraction formation which occur in the parts was examined by creating a bending simulation in the MSC.Marc finite element analysis program for En AW-5083-H321 series of aluminium which are more ... -
Design and Testıng of A Novel Intervention Configuration For the Lane Keepıng System For Vehıcles
(Fen Bilimleri Enstitüsü, 2023-01-30)This study presents a novel intervention configuration for lane keeping assistance system. The goal of the new configuration is to increase the robustness of the lateral control of the vehicle by utilizing the force potential ... -
Broadband and High Frequency Piezoelectric Energy Harvesting System With Curved Panels For Passive Vibration Isolator
(Fen Bilimleri Enstitüsü, 2023-02-01)In military aircrafts, random vibration occurs with high amplitude in broad frequency spectrum. High vibration profiles, which affecting electronic units, can cause fatigue over time and damage mechanics and electronic ... -
Dynamic Characterisation of Human Neck For Impact Applications
(Fen Bilimleri Enstitüsü, 2023)The neck is the part of the spine and has highest risk of injury in traffic accidents. Neck trauma can occur in several types of collisions, but rear-end collisions have the highest risk of trauma. Human neck models are ... -
Investigation of Ballistic Performance of Ceramic Armors With Tests and Analysis Which Contains Multilayer Ceramic Tiles
(Fen Bilimleri Enstitüsü, 2023)Ceramic armors have been developed to provide high ballistic protection with low density. Ceramic armors consist of three basic components, these are: the ceramic tile, the ductile backing plate, and the adhesive to bond ... -
Robust Autolanding System Design for a Combat Aircraft on the Ground
(Fen Bilimleri Enstitüsü, 2023-02-01)Within the scope of this thesis, a 6-degree-of-freedom model of a combat aircraft is created. Apart from the flight dynamics, landing gear dynamics on the ground are also modeled. After that, a robust autolanding system ...
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