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Journal Articles (Mechanical Engineering)
Items in this Collection
- 53Hogan, James D.
- 52Kumar, Amit
- 30Carey, Jason P.
- 17Major, Paul W.
- 15Hogan, James
- 13Melenka, Garrett W.
- 12Life Cycle Assessment
- 8Brittle failure
- 8Digital image correlation
- 8Dynamic fragmentation
- 7Boron carbide
- 7GHG Emissions
- 250Mechanical Engineering, Department of
- 250Mechanical Engineering, Department of/Journal Articles (Mechanical Engineering)
- 1Earth and Atmospheric Sciences, Department of
- 1Earth and Atmospheric Sciences, Department of/Journal Articles (Earth and Atmospheric Sciences)
- 1Physics, Department of
- 1Physics, Department of/Journal Articles (Physics)
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Dynamic Fragmentation of Planetary Materials: Length Scale Quantification and Semi-Analytical Modelling
Download2013
Rogers, Robert, Spray, John, Hogan, James
The dynamic fragmentation of planetary materials during impact into finite targets has been examined. A particle tracking algorithm was implemented to estimate the size and velocity of fragments ejected from the rear of the target. A total of 76 experiments were performed for four material,...
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Dynamic Fragmentation of Planetary Materials: Sub-Hypervelocity Ejecta Measurements and Velocity Scaling during Impact Testing
Download2013-01-01
Hogan, James, Vincent, Gregory, Spray, John, Rogers, Robert, Schneider, Markus
Ejecta velocity measurements were made during impacts into solid planetary materials. Ejecta velocity fields overlie each other when normalized by vmax, v50%mass, and v50%KE; these correspond to the maximum velocity and median values of mass and kinetic energy among ejecta velocities....
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2021-03-01
Koch, Brendan M.L., Lo, Calvin, Li, Haoyang, Sano, Tomoko, Ligda, Jonathan, Hogan, James D.
This paper explores the compressive responses of alumina ceramics subjected to various levels of pre-damage via internal cracking. Pre-damage is achieved by subjecting the samples to thermal shock. Mechanical loading is performed using a load frame for quasi-static strain rates and a Kolsky bar...
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2018-10-23
The dynamics of a fully nonlinear, tree-structured resonator and its response to a broadband forcing of the branches is examined. It is shown that the broadband forcing yields a transfer of energy between the parts of the spectrum so that the spectrum becomes progressively more narrow-band for...
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Effect of Ligation Method on Maxillary Arch Force / Moment Systems for a Simulated Lingual Incisor Malalignment
Download2014
Romanyk, Dan L., Major, Paul W., Seru, Surbhi, Toogood, Roger W., Carey, Jason P.
Introduction: The objectives of this study were to determine whether there is a difference in the magnitude of forces and moments produced by elastic ligation when compared to passive ligation, and whether these forces and moments propagate differently along the arch for the two ligation types. A...
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Effect of object location on the density measurement and hounsfield conversion in a NewTom 3G cone-beam computed tomography unit
Download2008
Ben-Zvi, Micha, Packota, Garnet V., Major, Paul W., Lagravère, Manuel O., Carey, Jason
Objectives: The purpose of this study was to determine the effect of an object's location in a cone beam CT imaging chamber (CBCT-NewTom 3G) on its apparent density and to develop a linear conversion coefficient for Hounsfield units (HU) to material density (g cm−3) for the NewTom 3G Scanner....
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2018-10-23
We examine the transient evolution of a negatively buoyant, laminar plume in an emptying filling box containing a uniform porous medium. In the long time limit, the box is partitioned into two uniform layers of different densities. However, the approach towards steady state is characterized by a...
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Energy balance and greenhouse gas emissions of production and sequestration of charcoal from agricultural residues
Download2016-01-01
Thakkar, Jignesh, Kumar, Amit, Ghatora, Sonia, Canter, Christina E.
Agricultural residues (wheat/barley/oat straw) can be used to produce charcoal, which can then be either landfilled off-site or spread on the agricultural field as a means for sequestering carbon. One centralized and five portable charcoal production technologies were explored in this paper. The...
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Energy consumption and greenhouse gas emissions in the recovery and extraction of crude bitumen from Canada's oil sands
Download2015-01-01
Nimana, Balwinder S., Canter, Christina E., Kumar, Amit
A model- FUNNEL-GHG-OS (FUNdamental ENgineering PrinciplEs- based ModeL for Estimation of GreenHouse Gases in the Oil Sands) was developed to estimate project-specific energy consumption and greenhouse gas emissions (GHGs) in major recovery and extraction processes in the oil sands, namely...