Journal Articles (Mechanical Engineering)

2019-01-01

Sabharwal, M., Pant, L. M., Patel, N., Secanell, Marc

A computational study is performed to analyze oxygen transport in dry and wet stochastically reconstructed catalyst layers (CLs). CL stochastic reconstructions are generated using random penetrating spheres of a given particle size that agree with the statistical correlation functions of a...

2021-08-15

Parsazadeh, Mohammad, Fisher, Gary, McDonald, André, Hogan, James D.

Sliding wear was simulated for tungsten carbide-nickel (WC-Ni) composites with different WC particle sizes and volume fractions under various normal forces. Johnson-Cook and Johnson-Holmquist models were employed to simulate the mechanical behaviour of the Ni and WC phases, respectively. Using...

2022-05-15

Parsazadeh, Mohammad, Fisher, Gary, McDonald, André, Hogan, James D.

Abrasive wear was simulated for tungsten carbide-nickel (WC–Ni) composite coatings with different volume fractions of reinforcing particles under abrasive cyclic loading. Using parallelized computing approaches, for the first time in the literature, the effects of reinforcing particle and normal...

2019-07-15

Nicewicz, P., Sano, T., Hogan, James D.

The quasi-static compaction response of granular stainless steel 316 was studied under triaxial loading conditions using a confined crucible experiment apparatus, specifically looking at effects of the particle size (127 ± 34 μm, 309 ± 88 μm, 487 ± 98 μm)on mechanical behavior. The material...

2013

Flynn, M.R., Rosales, R.R., Kasimov, A. R., Seibold, B.

Fundamental diagrams of vehicular traffic flow are generally multi-valued in the congested flow regime. We show that such set-valued fundamental diagrams can be constructed systematically from simple second order macroscopic traffic models, such as the classical Payne-Whitham model or the...

2018-10-23

Li, S., Moradi, A., Vickers B. and M.R. Flynn

The traditional approach of cooling tower plume abatement is supposed to result in an unsaturated, well-mixed plume with a ‘‘top-hat” structure in the radial structure, but this is an idealization that is rarely achieved in practice. Meanwhile, previous analyses have shown that there may be an...

2017-01-01

Farbaniec, L., Hogan, James D., Xie, K.Y., Shaeffer, M., Hemker, K.J., Ramesh, K.T.

The dynamic response of hot-pressed boron carbide was studied under uniaxial and confined loading conditions using a modified compression Kolsky bar setup at strain rates of 102 – 103 s–1. The progression of damage in the prismatic specimens was captured using a high-speed camera. This...

2013

Hogan, James, Schneider, Markus, Rogers, Robert, Spray, John, Vincent, Gregory

The dynamic fragmentation of coarse and fine grained granitoid blocks during impact has been examined for energies of 1.9 kJ to 3.0 kJ and 2.7 kJ to 6.8 kJ, respectively. A particle tracking algorithm was developed to measure ejecta size and velocity at the rear of the target for a horizontal...

2020-07-01

Lo, Calvin, Sano, Tomoko, Hogan, James D.

We investigated the uniaxial compressive behavior of damaged and intact alumina using quantitative X-ray computed tomography (XCT) analysis coupled with digital image correlation (DIC) for mechanical characterization. Internal three-dimensional crack characteristics such as crack surface area and...

2006

Carey, Jason, Lagravère, Manuel O., Major, Paul W., Fang, Y., Packota, Garnet V., Toogood, Roger W.

Objective: The purpose of this study was to determine a conversion coefficient for Hounsfield Units (HU) to material density (g cm−3) obtained from cone-beam computed tomography (CBCT-NewTom QR-DVT 9000) data. Methods: Six cylindrical models of materials with different densities were made and...