Browsing Mechanical and Mechatronics Engineering by Supervisor "Toyserkani, Ehsan"
Now showing items 21-33 of 33
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Implementation of Coupled Thermo-Mechanical Topology Optimization Methods for Effective Additive Manufacturing of a Gas Turbine Component
(University of Waterloo, 2020-02-18)Additive manufacturing (AM) is a relatively new technology that is making its way into different industries at a fast pace. In order to take full advantage of flexibility and freedom that this technology provides, a proper ... -
In-situ monitoring and intermittent controller for adaptive trajectory generation during laser directed energy deposition via powder feeding
(University of Waterloo, 2023-03-27)Laser Directed Energy Deposition (LDED) is one of the advanced manufacturing technologies for building near-net-shaped engineering components in a layer-by-layer fashion using high-power lasers as an energy source. LDED ... -
In-Situ Monitoring and Quality Assurance Algorithms for Laser Powder-Bed Fusion
(University of Waterloo, 2022-04-13)This dissertation describes the development of advanced in-situ defect detection algorithms using analytical and machine learning methods, followed by intermittent control systems to minimize the number of defects in parts ... -
Magnesium for biomedical applications as degradable implants: thermomechanical processing and surface functionalization of a Mg-Ca alloy
(University of Waterloo, 2016-01-25)Degradable implants for bone fixation have been of significant interest since the last decade. Among different materials, magnesium appears as a promising candidate due to its unique combination of properties. Magnesium ... -
Monitoring and Control of Metal Additive Manufacturing Processes Using Ultrasound
(University of Waterloo, 2023-01-24)Laser powder bed fusion (LPBF) and Directed energy deposition (DED) are two classes of additive manufacturing (AM) that are widely used to fabricate metal components. In these processes, metal powder or wire and a heat ... -
Powder-fed Laser Directed Energy Deposition of Near-β Titanium Alloy: A Comprehensive Analytical and Experimental Analysis
(University of Waterloo, 2021-10-12)Laser directed energy deposition through powder feeding (LDED-PF), a class of metal additive manufacturing (AM), is a promising technique that enables the repair and refurbishment of metallic components with a variety of ... -
Process Mapping and Optimization of Titanium Parts Made by Binder Jetting Additive Manufacturing
(University of Waterloo, 2018-01-08)Additive manufacturing (AM) has recently seen an increase in adoption outside of its traditional role of rapid prototyping and is being used more and more for the production of functional components. The increased adoption ... -
Process Optimization, Numerical Modelling, and Microstructure Control in Laser Powder Bed Fusion of Ti-5553 Parts
(University of Waterloo, 2024-03-14)Additive manufacturing (AM) is an advanced production technique that creates components by depositing material layer by layer. AM has been deployed industrially for producing metallic parts from alloys which pose challenges ... -
Rapid Thermo-mechanical Modeling of Laser Powder-Bed Fusion Additive Manufacturing using an Effective Heat Source
(University of Waterloo, 2021-09-22)Laser powder-bed fusion (LPBF) is one of the most common types of additive manufacturing (AM) processes that has gained a lot of attraction by industries. This process induces a high magnitude of a temperature gradient ... -
Single and Dual-Parameter Fiber Bragg Grating Sensors Embedded in Metallic Structures
(University of Waterloo, 2017-04-04)Fiber Bragg Gratings (FBGs) are optical fiber sensors that can be used to measure both strain and temperature. Due to their robustness, FBG sensors can be more easily embedded into materials than traditional electronic ... -
Structure-Property correlation in additive manufactured Ti-5553 components
(University of Waterloo, 2023-01-26)A recently developed metastable β-titanium alloy, Ti-5Al-5V-5Mo-3Cr (Ti-5553), is a potential replacement to existing aircraft landing gear materials, offering a wider processing window along with excellent heat treatability. ... -
Surface Modification of Stainless Steel by Electro-Spark Deposition
(University of Waterloo, 2016-12-13)Electrospark Deposition (ESD) is a pulsed micro-welding process that is used to apply surface coatings for repair of damaged high value precision products or modify their surfaces for specific properties. The low heat ... -
Systems, materials, and methodologies for multi-material hybrid additive manufacturing functionally graded structures
(University of Waterloo, 2017-10-18)Over the last three decades, additive manufacturing (AM), which is based on fashioning 3D objects through a layer-by-layer construction, has greatly expanded. The progress in this field is due to the capability of fabricating ...