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Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 261-280 of 1512
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Laminar Separation Bubble Dynamics on a Finite Wing
(University of Waterloo, 2021-07-30)Laminar separation bubbles substantially influence the performance of finite wings at low chord Reynolds numbers. The objective of this study is to explore the influence of wingtip effects on three-dimensional laminar ... -
Velocity scaling of high-speed turbulent boundary layer flows with wall heat transfer
(University of Waterloo, 2021-07-19)The law of the wall has been a staple in collapsing the mean velocity profiles of seemingly very different turbulent channel and boundary layer flows into one single, semi-analytical function. Accordingly, it has equipped ... -
Modeling and Simulation of Lower Limb Spasticity in Motor-Impaired Individuals
(University of Waterloo, 2021-06-29)Spasticity is a symptom that impairs the ability to freely move and control one’s limbs through increased tone and involuntary activations in the muscles. It can cause pain and discomfort and interfere with daily life and ... -
Crystal Plasticity Based Numerical Modeling of Temperature and Strain Rate Dependent Behavior in Mg Alloys
(University of Waterloo, 2021-06-23)This thesis provides a combined experimental and numerical study to explore the mechanical and forming behavior of E-form Plus Mg alloy. For the last few decades, Mg alloys are a key of interest for replacing heavier steel ... -
Analysis of Facial Emotional Characteristics: Impact of Culture and Gender
(University of Waterloo, 2021-06-22)Emotional expressions are considered universal for a long time. However, some evidence indicates that there are gender and cultural specific variations in emotional expressions, which leads to inaccurate recognition result ... -
On the Development of Fold Initiator Patterns to Promote Progressive Folding of Hot Stamped Ultra-High Strength Axial Crush Structures
(University of Waterloo, 2021-06-21)The effect of fold initiator design on the performance of axial crush rails fabricated using ultra high strength steels (UHSS) is examined in a combined experimental-numerical-analytical study. Of particular interest is ... -
Graphene-based FET biosensors
(University of Waterloo, 2021-06-16)Graphene and graphene-based materials are highly attractive for field effect transistor (FET) applications because of their elevated theoretical charge carrier mobility. Graphene FETs (GFETs) are studied for biosensing ... -
3D Shape Reconstruction of Knee Bones from Low Radiation X-ray Images Using Deep Learning
(University of Waterloo, 2021-06-02)Understanding the bone kinematics of the human knee during dynamic motions is necessary to evaluate the pathological conditions, design knee prosthesis, orthosis and surgical treatments such as knee arthroplasty. Also, ... -
Towards Improved Understanding and Modelling of Compact Heat Exchangers
(University of Waterloo, 2021-06-02)The present work pursues the ability to increase the fundamental understanding of and to improve numerical modelling capabilities for Compact Heat Exchangers (CHE). This goal is achieved by numerically and experimentally ... -
A New Crystal Plasticity Model for Steels Exhibiting Transformation Induced Plasticity with Application to Quenched and Partitioned Steel
(University of Waterloo, 2021-05-28)This thesis outlines the development of a constitutive model and the modelling techniques required to accurately model steels that exhibit transformation induced plasticity over a wide range of strain-rates and temperatures. ... -
Applications of Reflectometry Towards the Development of MEMS Gas Sensors
(University of Waterloo, 2021-05-27)Reflectometry or reflectance spectroscopy is a relatively simple characterization technique based on the analysis of reflected light from a surface. Herein, reflectometry is used to attain significant insights towards the ... -
Predictive model of impact-induced bonding in cold spray using the Material Point Method
(University of Waterloo, 2021-05-27)Cold spray technology has emerged in recent years as a promising method of powder deposition that is inherently different from other processes. Without melting of the particles prior to deposition, powders of a wide range ... -
Development of a Prosthetic Biofeedback Method and Device to Measure Quality of Fit for Trans-Tibial Amputees
(University of Waterloo, 2021-05-27)As the primary interface between the prosthetic and the residual limb, the socket is a crucial component affecting fit and function of the device. While prostheses have been used for centuries, prosthetic socket design ... -
Characterization and Simulation of the Microstructure of Additively Manufactured Hastelloy X Parts with Columnar Grain Structure
(University of Waterloo, 2021-05-21)One of the well-known AM techniques is laser powder-bed fusion (LPBF), which enables engineers to benefit from the concept of “design freedom” while designing complex geometries compared to other conventional methods. This ... -
Embedding Optical Sensors in Additively Manufactured Parts for In-Situ Performance Measurement
(University of Waterloo, 2021-05-18)The aim of this project is to explore the potential of embedding sensors in additively manufactured metal parts towards smart product development. Smart product development is desirable due to its ability to detect product ... -
Design for Additive Manufacturing: Topology Optimization of Structures under Design-Dependent Loads and Manufacturing Constraints
(University of Waterloo, 2021-05-18)The advances in additive manufacturing (AM) have opened new possibilities in design and manufacturing that were not previously attainable. AM has found application in several industries such as aerospace, medical, automotive, ... -
Simplifying Accelerated Electromigration Testing of Solder using Wire-based DUTs
(University of Waterloo, 2021-05-17)A novel and accelerated method for the characterization of Electromigration (EM) in a solder material typically used in electronics packaging is proposed in this report. The method includes a novel approach to prepare EM ... -
Depth-sensing thermal stability of accumulative fold-forged nanostructured materials
(Elsevier, 2021-04)Accumulative fold-forging (AFF) as a newly developed severe plastic deformation (SPD) process based on the repetitive fold-forging steps is implemented for the production of the layered UFG (~200 nm) AA8006 alloy and ... -
Additive Manufacturing of Architected Structures for Healthcare Applications
(University of Waterloo, 2021-05-07)This dissertation focuses on the development of architected structures via direct additive manufacturing (AM) and novel template-assisted techniques for sensing and tissue engineering applications. Although AM technologies ... -
Characterization of single- and multilayer cold-spray coating of Zn on AZ31B
(Elsevier, 2021-06-25)Zinc, a soft material with a low melting point and high corrosion resistance, was coated onto AZ31B Mg alloy using different cold spraying process parameters. The physical and mechanical properties of the resulting Zn/AZ31B ...