UWSpace will be migrating to a new version of its software from July 29th to August 1st. UWSpace will be offline for all UW community members during this time.
Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 661-680 of 1512
-
Investigation of Resistance Spot Weld Failure in Tailored Hot Stamped Assemblies
(University of Waterloo, 2018-01-23)This thesis presents the results from the mechanical characterization of resistance spot welds within hot stamped USIBOR® 1500-AS steel sheet (1.2 and 1.6 mm thickness) with tailored properties. Three parent metal conditions, ... -
A Component-Level Study on the Effect of Warm Forming on Formability and Springback of Aluminum Alloy Brazing Sheet
(University of Waterloo, 2018-01-23)This thesis investigates the effect of warm forming (up to 350⁰C) on the formability and springback behavior of AA3003/AA4045 brazing sheet (0.2 mm gauge) for three temper conditions: O-, H22- and H24-tempers. The geometry ... -
Dynamic and Quasi-Static Response of Warm and Hot Formed Aluminum Beams Under Three-Point Bending
(University of Waterloo, 2018-01-23)This thesis investigates the effect of elevated temperature forming on the impact resistance of three aluminum alloys, AA6013-T6, AA7075-T6, and a developmental 7000-series alloy (designated AA7xxx-T76). Both die quenching ... -
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 ... -
Effect of alloy composition on hot deformation behavior of some Al-Mg-Si alloys
(Elsevier, 2018-03-01)The hot flow stress behavior of three Al-Mg-Si alloys was determined by performing hot deformation compression tests on a Gleeble 3500 thermomechanical simulator over the temperature range 400 °C–550 °C and at strain rates ... -
Compressed Sensing for Elastography in Portable Ultrasound
(Sage Journals, 2017-07-01)Portable wireless ultrasound has many advantages such as high portability, easy connectivity, strong individuality, as well as on-site diagnostic ability in real-time. Some of the modern portable ultrasound devices offer ... -
Sagging resistance of warm formed aluminum brazing sheet
(Elsevier, 2018-04-01)Interrupted tensile tests, performed between room temperature (RT) and 250°C, were used to simulate warm forming of an AA3003/AA4045 brazing sheet. Brazing performance was predicted from sagging distance measurements after ... -
Experimental and simulated temperature variations in a LiFePO4-20Ah battery during discharge process
(Elsevier, 2016-10-15)The present study investigates the impact of various discharge rates on the thermal (temperature and heat generation profiles) and electrical performance of the Li-ion battery for electric vehicles and hybrid electric ... -
Experimental and theoretical investigations of heat generation rates for a water cooled LiFePO4 battery
(Elsevier, 2016-10-01)Understanding the rate of heat generation in a lithium-ion cell is critical for its safety and performance behavior. This paper presents in situ measurements of the heat generation rate for a prismatic Lithium-ion battery ... -
Design and simulation of a lithium-ion battery at large C-rates and varying boundary conditions through heat flux distributions
(Elsevier, 2018-02-01)In this paper, the heat flux distributions on a prismatic lithium-ion battery at 1C, 2C, 3C and 4C discharge rates under various operating temperatures and boundary conditions (BCs) of 22 °C for air cooling and 5 °C, 15 ... -
Transient electrochemical heat transfer modeling and experimental validation of a large sized LiFePO4/graphite battery
(Elsevier, 2017-06-01)Both measurement and modeling of thermal performance in lithium-ion battery cell are considered crucial as they directly affect the safety. Even though the operation of a lithium-ion battery cell is transient phenomena in ... -
Thermal design and simulation of mini-channel cold plate for water cooled large sized prismatic lithium-ion battery
(Elsevier, 2017-07-25)This paper has presented a comparative study of the temperature and velocity distributions within the mini-channel cold plates placed on a prismatic lithium-ion battery cell using experimental and numerical techniques. The ... -
Cycling degradation testing and analysis of a LiFePO4 battery at actual conditions
(Wiley, 2017-12-01)This paper presents a degradation testing of a lithium-ion battery developed using real world drive cycles obtained from an electric vehicle (EV). For this, a data logger was installed in the EV, and real world drive cycle ... -
Uneven temperature and voltage distributions due to rapid discharge rates and different boundary conditions for series-connected LiFePO4 batteries
(Elsevier, 2017-02-01)This paper presents the surface temperature and voltage distributions on a prismatic lithium-ion battery pack at 1C, 2C, 3C, and 4C discharge rates and 5°C, 15°C, 25°C, and 35°C boundary conditions (BCs) for water cooling ... -
The Effects of Additives on the Dehydrogenation of Amorphous Manganese Borohydride and Its Crystalline Form after Solvent Filtration/Extraction
(Multidisciplinary Digital Publishing Institute, 2017-10-30)A non-stoichiometric, amorphous a-Mn(BH4)(2x) hydride, accompanied by a NaCl-type salt, was mechanochemically synthesized from the additive-free mixture of (2NaBH4 + MnCl2), as well as from the mixtures containing the ... -
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 ... -
Experimental and modeling investigation of thermal behaviour and performance of lithium ion prismatic cells at cold-start temperatures
(University of Waterloo, 2018-01-05)This thesis examines the thermal behaviour of prismatic lithium iron-phosphate (LFP) cells and batteries and the influence of that behaviour on discharge performance under cold-start operating conditions representative of ... -
Development of Green Synthetic Approaches for the Potential Application of Carbon and Semiconductor Nanomaterials for Emerging Applications
(University of Waterloo, 2017-12-22)The increasing interest towards the synthesis and modification of different nanomaterials is attributed to their outstanding mechanical, physical and electrical properties that allow their use in different fields. In the ... -
Laboratory Evaluation of Low to Medium Cost Particle Sensors
(University of Waterloo, 2017-12-21)Low cost instruments for particulate matter monitoring directly benefits researchers, governments, and public with the overall goal of reducing the adverse effects of air pollution. As a result, companies have been rushing ... -
Modeling Dynamic Systems for Multi-Step Prediction with Recurrent Neural Networks
(University of Waterloo, 2017-12-20)This thesis investigates the applicability of Recurrent Neural Networks (RNNs) and Deep Learning methods for multi-step prediction of robotic systems. The unmodeled dynamics and simplifying assumptions in classic modeling ...