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Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 521-540 of 1512
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A simple droplet merger design for controlled reaction volumes
(Springer Nature, 2017-04-01)Droplet microfluidics has been proven to be a viable platform for a variety of reactions by using uniform droplets well encapsulated by an immiscible carrier medium as reaction vesicles. Merging as one of the most basic ... -
On nonequilibrium shrinkage of supercritical CO2 droplets in a water-carrier microflow
(AIP Publishing, 2018-07-16)We report an experimental study on the hydrodynamic shrinkage of supercritical carbon dioxide (scCO(2)) microdroplets during a nonequilibrium process. After scCO(2 )microdroplets are generated by water shearing upon a ... -
A micromechanical investigation of biomimetic composites: experimental characterization and three-dimensional computational modeling
(University of Waterloo, 2018-12-06)Biological and natural composites have been naturally optimized over millions of years. These materials benefit from high-performance responses under various loading conditions. Mimicking these materials offers the opportunity ... -
Electrokinetic phenomena of electrically induced Janus droplets and their applications
(University of Waterloo, 2018-12-04)Janus droplets refer to droplets comprised of two hemispheres with different properties. Among the Janus droplets, electrically anisotropic Janus droplets with two sides carrying opposite signs of surface charges are unique. ... -
Nonprehensile Manipulation via Multisensory Learning from Demonstration
(University of Waterloo, 2018-12-04)Dexterous manipulation problem concerns control of a robot hand to manipulate an object in a desired manner. While classical dexterous manipulation strategies are based on stable grasping (or force closure), many human-like ... -
Towards Robust Autonomous MAV Landing with a Gimbal Camera
(University of Waterloo, 2018-11-30)As micro aerial vehicles (MAVs) become increasingly common as platforms for aerial inspection, monitoring and tracking, the need for robust automated landing methods increases, for both static and dynamic landing targets. ... -
Granularity measures and complexity measures of partition-based granular structures
(Elsevier, 2019-01-01)Granular computing is an emerging field of study in which the complexity of problem solving is reduced through granulation. Researchers have proposed various granularity measures of partitions to quantify the effects of ... -
Vortex break-down during the impact of a starting subsonic compressible gas jet on a multi-plume spray
(Springer, 2016-11-01)The impact process and the consequent two-phase interaction for a compressible subsonic starting gas jet colliding on a multi-plume spray are investigated using large eddy simulation with Eulerian/Lagrangian multiphase ... -
Assessment and validation of liquid breakup models for high-pressure dense diesel sprays
(Springer, 2016-06-01)Liquid breakup in fuel spray and atomization significantly affects the consequent mixture formation, combustion behavior, and emission formation processes in a direct injection diesel engine. In this paper, different models ... -
Humidification strategy for polymer electrolyte membrane fuel cells – A review
(Elsevier, 2018-11-15)Polymer electrolyte membrane fuel cells are promising power sources because of their advantage such as high efficiency, zero emission and low operating temperature. Water management is one of the critical issues for polymer ... -
Assessment of failure toughening mechanisms in continuous glass fiber thermoplastic laminates subjected to cyclic loading
(Elsevier, 2019-03-15)Tensile fatigue behaviour of glass fiber/polyamide composites, including unidirectional ([0]8, [90]8) and cross-ply ([02/902]s, [04/904]s and [904/04]s) laminates, was studied and compared to that of similar glass fiber/epoxy ... -
Research on the energy control of a dual-motor hybrid vehicle during engine start-stop process
(Elsevier, 2019-01-01)In this paper, motor torque control methods are proposed to suppress the vibration of a dual-motor hybrid powertrain during start-stop operation. Firstly, a co-simulation ADAMS and MATLAB/SIMULINK model is built to study ... -
A new approach to rapidly generate random periodic representative volume elements for microstructural assessment of high volume fraction composites
(Elsevier, 2018-07-15)An algorithm based on event-driven molecular dynamics theory was developed to rapidly generate periodic representative volume elements (RVEs) with nonuniform distributions for both unidirectional fibre-reinforced and ... -
Narrow Urban Vehicles with an Integrated Suspension Tilting System: Design, Modeling, and Control
(University of Waterloo, 2018-11-20)Narrow urban vehicles are proposed to alleviate urban transportation challenges like congestion, parking, fuel consumption, and pollution. They are designed to seat one or two people in tandem, which saves space in road ... -
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 ... -
Low-cycle fatigue characterization and texture induced ratcheting behaviour of forged AZ80 Mg alloys
(Elsevier, 2018-11-01)Stress-controlled uniaxial “push-pull” fatigue testing was conducted on as-received (cast and extruded) and closed-die cast-forged and extruded-forged AZ80 Mg alloy. The as-cast material possessed random texture and somewhat ... -
Interfacial bonding mechanisms between aluminum and titanium during cold gas spraying followed by friction-stir modification
(Elsevier, 2018-12-31)This paper closely evaluates the interfacial bonding mechanism between titanium particles deposited on an aluminum alloy substrate by cold gas spraying followed by friction-stir processing (FSP). After cold spraying and ... -
Effects of post-processing on the thermomechanical fatigue properties of laser modified NiTi
(Elsevier, 2019-01-01)The multifunctional capabilities needed for advanced shape memory alloys (SMA) actuators has been shown to be achievable by locally tuning the properties through laser processing. Before the wide-spread use of these SMAs ... -
Deconvolution of overlapping peaks from differential scanning calorimetry analysis for multi-phase NiTi alloys
(Elsevier, 2018-07-10)An adaptive function capable of fitting the curve of Differential Scanning Calorimetry (DSC) data for any NiTi phase transformation peak has been developed. A novel methodology was applied in conjunction with this new ... -
Liquid metal embrittlement in laser lap joining of TWIP and medium-manganese TRIP steel: The role of stress and grain boundaries
(Elsevier, 2018-11-01)High-Manganese austenite-containing steels with superior combination of strength and ductility have shown potential for enhancement of passenger safety and body-in-white (BIW) weight reduction. Even though Zn-coated ...