Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 629-648 of 1494
-
Failure Characterization of Hot Formed Boron Steels with Tailored Mechanical Properties
(University of Waterloo, 2016-04-01)This thesis presents the results from characterization of the failure behaviour of hot stamped USIBOR® 1500-AS steel sheet with tailored properties. A phenomenological approach is used in which failure strain is characterized ... -
Failure parameter identification and validation for a dual-phase 780 steel sheet
(Elsevier, 2017-10-01)A hybrid experimental-numerical procedure was implemented to determine the failure surface of a dual-phase 780 steel sheet as a function of the effective plastic strain, triaxiality, and Lode parameter using butterfly ... -
Fast and Robust Approach to Find the Gouge-free Tool Position of the Toroidal Cutter for the Bézier Surface in Five Axis Machining
(University of Waterloo, 2020-05-15)One of the approach used for tool path generation for Bézier surfaces is the Multipoint machining (MPM) approach, in which the toroidal cutter touches the machined surface at two points of contact. Multipoint machining ... -
Fatigue Analysis of Welded Joints Using Local Reference Stress
(University of Waterloo, 2017-05-24)Of the many parts of a machine, welded joints are the most susceptible to fatigue loading. The unusually complex geometry of a welded joint combined with the heating process during welding produces a high amount of stress ... -
Fatigue characteristics and modeling of cast and cast-forged ZK60 magnesium alloy
(Elsevier, 2019-01-01)The fatigue behavior of as-cast and cast-forged ZK60 magnesium alloy was investigated via fully-reversed strain controlled fatigue tests at different strain amplitudes. Microstructure analysis, texture measurement, and SEM ... -
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 characterization and modeling of AZ31B magnesium alloy spot-welds
(Elsevier, 2014-07-01)Cyclic behavior of AZ31B spot-welds was studied using different specimen configurations, and compared with steel and aluminum spot-welds. Fatigue strength of magnesium spot-welds was similar to aluminum and less than steel. ... -
Fatigue Life Assessment of 30CrNiMo8HH Steel Under Variable Amplitude Loading
(University of Waterloo, 2013-01-18)The actual service loading histories of most engineering components are characterized by variable amplitudes and are sometimes rather complicated. The goal of this study was to estimate the fatigue life of nickel-chromiu ... -
Fatigue Life Prediction Based on the Advanced Fatigue Crack Growth Model and the Monte-Carlo Simulation Method
(University of Waterloo, 2015-01-05)It is well-known that loss of the structural stability due to propagation of the dominant crack is one of the main sources of fatigue failures. Therefore, computationally feasible fatigue crack growth model is essential ... -
Fatigue Life Prediction of an Automotive Chassis System with Combined Hardening Material Model
(Society of Automotive Engineers, 2016-04-05)The choice of an appropriate material model with parameters derived from testing and proper modeling of stress-strain response during cyclic loading are the critical steps for accurate fatigue-life prediction of complex ... -
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 ... -
A Fault Diagnosis System for Rotary Machinery Supported by Rolling Element Bearings
(University of Waterloo, 2007-09-22)The failure of rolling element bearings is one of the foremost causes of breakdown in rotary machinery. So far, a variety of vibration-based techniques have been developed to monitor the condition of bearings; however, the ... -
Feasibility Analysis of Two Indirect Heat Pump Assisted Solar Domestic Hot Water Systems
(University of Waterloo, 2011-01-21)This thesis is an analysis of the simulated performance of two indirect heat pump assisted solar domestic hot water (i-HPASDHW) systems compared to two base systems: an electric domestic hot water (DHW) system and a ... -
Feasibility of Producing Clad Twin Roll Cast (TRC) AZ31
(University of Waterloo, 2011-10-27)The need for lighter weight vehicles to improve fuel efficiency is becoming increasingly imperative. Sheet magnesium alloys offer the potential as a light weight material for use in the transportation industry due to their ... -
Feasibility Study of Ferromagnetic Particulate Path Diversion in Additive Manufacturing
(University of Waterloo, 2018-04-30)The use of electromagnetic actuator components typically involves a coil comprised of a stack-packed continuous winding, usually layered, and a core material of soft iron or at least a solenoid, similarly constructed, ... -
Feedback Controls in Droplet Microfluidics
(University of Waterloo, 2016-12-21)The ability to stabilize and move individual droplets would allow scientists to perform micro-scale manipulation, and unlock the advantages of microfluidics. The challenge lies in the fact that droplet displacements are ... -
Femtosecond Laser Interaction with Graphene Oxide Aqueous Solution
(University of Waterloo, 2015-09-23)In this study fs pulsed laser of wavelength 800 nm was used to reduce two sets of aqueous graphene oxide solution namely low (0.5 mg/mL) and high concentration (6.2 mg/mL). It was found that after fs laser treatment the ... -
Femtosecond Laser Joining of Silver Submicron/Nanoparticles
(University of Waterloo, 2015-08-06)The development of future devices is towards to the miniaturization and performance improvement. This requires the large scale integration of nanodevices. Nanojoining is an essential step for the industrial scale production ... -
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 ... -
Fiber Optic Sensor for In-Situ State-of-Charge Monitoring for Lithium-Ion Batteries
(University of Waterloo, 2015-01-13)The objective of this thesis is to develop a fiber optic sensor for in-situ measurement of the optical properties of Li-ion batteries for the purpose of state-of-charge (SOC) estimation. Current methods rely on measuring ...