Browsing Theses by Subject "fatigue"
Now showing items 1-20 of 27
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Behaviour of Post-Tensioned Slab Bridges with FRP Reinforcement under Monotonic and Fatigue Loading
(University of Waterloo, 2013-07-02)The introduction of fibre-reinforced polymers (FRPs) to the field of civil engineering has led to numerous research efforts focusing on a wide range of applications where properties such as high strength, light weight or ... -
Bond Behaviour of Beams Reinforced with Near Surface Mounted Carbon Fibre Reinforced Polymer Rods under Fatigue Loading
(University of Waterloo, 2011-04-19)Over the past decade, extensive research has been conducted on the strengthening of reinforced concrete (RC) structures using externally bonded fibre reinforced polymer (FRP). More recently, near-surface mounted (NSM) FRP ... -
Characterization and Modeling of Forged ZK60 Mg Alloys under Quasi-static and Fatigue Loadings
(University of Waterloo, 2020-01-24)In response to impending changes to the environmental regulations on the vehicles’ gas consumption rate, the transportation sector is motivated toward the widespread adoption of lightweight materials in the manufacturing ... -
Design of Ultrasonic Processing Device for Aluminum Surfaces
(University of Waterloo, 2018-01-19)The work in this thesis examines the design possibility of a device capable of harnessing ultrasonic oscillations through resonance such that it can be applied onto an aluminum surface to produce a compressive residual ... -
Detecting subject-specific fatigue related changes in lifting kinematics using a machine learning approach
(University of Waterloo, 2021-01-07)Background. Functional capacity evaluations (FCEs) are used to determine a worker’s capacity for return to work (RTW) or for job matching purposes. FCEs are completed using a subjective approach, where a trained evaluator ... -
Development of Computational Multiaxial Fatigue Modelling For Notched Components
(University of Waterloo, 2012-05-03)Fatigue failures of driveline and suspensions components for ground vehicles under multiaxial loading conditions are common, since most those components are subjected to complex multiaxial loadings in service. In addition ... -
The Effects of Elevated Temperature and Laminating on the Quasi-Static and Fatigue Properties of Electrical Steel
(University of Waterloo, 2023-05-24)Electrical steel is an alloy of steel that can have on average 3% silicon. These alloys are known to possess great magnetic properties, and this makes them an ideal material choice for the application of electric motors ... -
Examining changes in intradiscal pressure during intervertebral disc herniation
(University of Waterloo, 2013-09-27)Background: Approximately 40% of low back pain cases are attributed to internal disc disruption. Since mechanical loading directly affects intradiscal pressure and the stresses that the inner annulus fibrosus experiences, ... -
Experimental and numerical investigation of split sleeve cold expansion of AZ31B magnesium alloy
(University of Waterloo, 2018-04-23)The serious pollution problem caused by transportation can cause critical environmental effect such as global warming. This has drawn attention towards lighter materials for use in the transportation industry. Magnesium ... -
Exploring interactions between force, repetition and posture on low back joint loading and intervertebral disc injury
(University of Waterloo, 2014-08-26)Low back pain (LBP) affects approximately 80% of the population at some point in their lives, with 65% of cases becoming chronic pain sufferers. Approximately 40% of LBP cases are attributed to intervertebral disc (IVD) ... -
Fatigue Characterization and Cyclic Plasticity Modeling of Magnesium Spot-Welds
(University of Waterloo, 2013-07-18)The automotive industry is adopting lightweight materials to improve emissions and fuel economy. Magnesium (Mg) alloys are the lightest of engineering metals, but work is required to assess their structural strength, ... -
Fatigue Design and Behaviour of Carburized Steel
(University of Waterloo, 2022-05-02)Steel is an essential component used in infrastructure, automobiles, machines and many other areas due to its low cost and high tensile strength. Carburization is a heat treatment process commonly used to harden and ... -
Fatigue Flexural Behaviour of Reinforced Concrete Beams with Non-Prestressed and Prestressed Basalt Fiber Reinforced Polymer Bars
(University of Waterloo, 2015-06-18)Basalt fibers have recently been introduced as a promising alternative to the existing fiber reinforced polymer (FRP) family. The mechanical properties of basalt FRP (BFRP) bars are, generally, better than those of glass ... -
Fatigue of Forged AZ80 Magnesium Alloy
(University of Waterloo, 2019-09-25)The majority of research surrounding the fatigue of Mg alloys generally exhibits a rigid dichotomy between theoretical and applied contributions. This research work addresses both of these domains of the field from a more ... -
Fatigue Testing and Analysis of Aluminum and Steel Partial Joint Penetration (PJP) Welds for Bridge Applications
(University of Waterloo, 2023-05-30)Partial joint penetration (PJP) welds are a cost-effective alternative to full penetration welds and have certain advantages, especially in situations where a full penetration weld is unnecessary and the stress on the weld ... -
Fiber Laser Welding of Advanced High Strength Steels
(University of Waterloo, 2013-08-01)Fiber laser welding (FLW) was used to join advanced high strength steel (AHSS) and high strength steel (HSS); specifically two dual-phase (DP) steels, with ultimate tensile strengths above 980 MPa and with different ... -
Flexural Fatigue Behaviour of Corroded Pretensioned Beams and Their Repair Using Carbon Fibre Reinforced Polymer Sheets
(University of Waterloo, 2015-09-24)The study presented in this thesis investigated the flexural fatigue behaviour of non-corroded and corroded pretensioned beams and examined the use of externally bonded Carbon Fibre Reinforcement Polymer (CFRP) sheets as ... -
Jerk as a Method of Identifying Physical Fatigue and Skill Level in Construction Work
(University of Waterloo, 2019-04-26)Researchers have shown that physically demanding work, characterized by forceful exertions, repetition, and prolonged duration can result in fatigue. Physical fatigue has been identified as a risk factor for both acute and ... -
Kinematic variability in repetitive occupational tasks as an individual trait from different motor control perspectives
(University of Waterloo, 2022-07-06)Recent ergonomic research suggests that individuals with low motor variability (repeaters) are at higher risk of developing work-related musculoskeletal disorders than individuals with high motor variability (replacers) ... -
Machine Learning in Driver Drowsiness Detection: A Focus on HRV, EDA, and Eye Tracking
(University of Waterloo, 2023-09-25)Drowsy driving continues to be a significant cause of road traffic accidents, necessi- tating the development of robust drowsiness detection systems. This research enhances our understanding of driver drowsiness by analyzing ...