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- 7Dynamic fragmentation
- 6Planetary materials
- 5Ceramics
- 4Brittle fracture
- 4Brittle materials
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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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Effects of Oxide Additions on the Corrosion Behaviour of Cr2O3 Based Ceramics in High Temperature Supercritical Water Environment
DownloadFall 2012
This investigation is aimed at developing ceramic materials applied in supercritical water, which is being considered as coolant for one of the next generation nuclear reactors. Cr2O3, a primary protective film on stainless steels, was found to be unstable in SCW due to the formation of soluble...
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Spring 2011
An ever increasing demand to exploit oil and natural gas reserves has significantly increased extraction activities even in the remotest regions of the Arctic and sub-Arctic regions of the Canadian North. Steel pipelines are the most efficient mode for transporting and distributing these...
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Impact Failure of Planetary Materials: Lateral Field Ejecta Measurements using Particle Image Velocimetry
Download2014
Schneider, Markus, Spray, John, Rogers, Robert, Hogan, James, Vincent, Gregory
The dynamic fragmentation of a fine grained granitoid material has been examined. Target thicknesses ranged from 7 to 40 mm and impact energies from 12 to 2,500 J. Combined particle image velocimetry and image enhancement techniques are introduced and have been used to measure the size and...
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In-situ visualisation of dynamic fracture and fragmentation of an L-type ordinary chondrite by combined synchrotron X-ray radiography and microtomography
Download2021-05-01
Farbaniec, Lukasz, Chapman, David J., Patten, Jack R.W., Smith, Liam C., Hogan, James D., Rack, Alexander, Eakins, Daniel
The relationship between the dynamic mechanical properties of stony meteorites and their microstructures was investigated in-situ for an L-type ordinary chondrite using a split-Hopkinson pressure bar apparatus and ultra-high speed phase-contrast X-ray radiography at the European Synchrotron...
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Fall 2020
The pelvic bone is one of most stressed bones in the human body due to its essential task of weight-bearing of upper body. However, pelvic bone fractures usually occur as a result of high-rate impact loads, high cycle with low magnitude (e.g., stress fractures) or bone diseases such as pelvic...
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On the evaluation of mechanical properties and ballistic performance of two variants of boron carbide
Download2021-06-01
Lo, Calvin, Li, Haoyang, Toussaint, Geneviève, Hogan, James D.
A comparative study on the microstructure, rate-dependent compressive behavior, and ballistic performance of commercially available pressureless sintered boron carbide-titanium diboride (material Z) and hot-pressed boron carbide (material S) was conducted. Under quasi-static compression at rates...
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Physics-Based Modeling of Failure of Novel Light-Weight Materials: Applications to Computational Design of Materials
DownloadFall 2021
Advanced physics-based computational models have been developed in this thesis to study dynamic failure in novel light-weight materials used in impact applications, focusing on applying different computational techniques to study three material systems: 1. novel self-propagating high-temperature...
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The Effects of Microstructure and Confinement on the Compressive Fragmentation of an Advanced Ceramic
Download2014
Farbaniec, Lukasz, Shaeffer, Matt, Ramesh, K.T., Hogan, James
We investigate the rate-dependent compressive failure and fragmentation of a hot-pressed boron carbide, under both uniaxial and confined biaxial compression, using quantitative fragment analysis coupled with quantitative microstructural analysis. Two distinct fragmentation regimes are observed,...
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Fall 2020
Pelvic fractures are severe injuries that are associated with high rates of mortality and morbidity, especially in the elderly population. In severe cases of fracture, urgent surgical intervention may be required with the use of fixation plates to stabilize the fracture. The surgical planning...