Search
Skip to Search Results- 9Brittle failure
- 4Boron carbide
- 4Discrete Element Method
- 3Advanced ceramics
- 3Experimental mechanics
- 3Kolsky bar technique
- 5Farbaniec, Lukasz
- 5Hogan, James D.
- 4Ramesh, K.T.
- 3Hogan, James
- 2McCauley, James W.
- 2Ramesh, Kaliat T.
- 8Mechanical Engineering, Department of
- 8Mechanical Engineering, Department of/Journal Articles (Mechanical Engineering)
- 3Graduate and Postdoctoral Studies (GPS), Faculty of
- 3Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 1Civil and Environmental Engineering, Department of
- 1Civil and Environmental Engineering, Department of/Research Materials (Civil & Environmental Engineering)
-
2016-01-01
Yifei Cui, Alireza Nouri, Dave Chan, Ehsan Rahmati
This paper presents a model for the investigation of sandstone degradation and sand production mechanisms coupled with fluid flow analysis using the Discrete Element Method (DEM). The model was used to investigate the effects of in-situ stresses and flow rate on sand production. We developed a...
-
2016-01-01
Farbaniec, Lukasz, Hogan, James D., McCauley, James W., Ramesh, Kaliat T.
Effects of microstructure and material properties on the mechanical behavior of hot-pressed boron carbide are presented. The microstructure and intrinsic microstructural inhomogeneities have been characterized using scanning electron microscopy characterization techniques (SEM/EDS/EBSD). In-situ...
-
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...
-
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....
-
Spring 2013
Laboratory testing of rocks is traditionally carried out to determine the peak strength using the ISRM Suggested Methods or other suitable standards. However, it is well known that in low-porosity crystalline rocks there are at least three distinct stages of compressive loading that can be...
-
2017-04-01
Hogan, James D., Farbaniec, Lukasz, Mallick, Debjoy, Domnich, Vladislav, Kuwelkar, Kanak, Sano, Tomoko, McCauley, James W., Ramesh, Kaliat T.
In this paper, the impact-induced fragmentation of a commercially available hot-pressed boron carbide is explored. Fragmentation has been noted previously by many authors to be important in the impact performance of advanced ceramics, and so this paper seeks to provide some of the first...
-
Fall 2013
Landslides include various forms of geological mass movements such as falls, slides and flows under the force of gravity. Predictions of landslide kinematics and dynamics require knowledge of flow behaviour and mathematical modeling. Research into the flow behaviour of granular materials has...
-
Micromechanisms Associated with the Dynamic Compressive Failure of Hot-Pressed Boron Carbide
Download2015
Ramesh, K.T., Farbaniec, Lukasz, Hogan, James
Brittle failure in boron carbide has been studied in dynamic uniaxial compression using a Kolsky bar technique. A detailed study of fragments was performed using SEM-EDS, to identify the mechanisms responsible for failure. Microstructural characterization and fracture surface observations...
-
2016
Farbaniec, Lukasz, Daphalapurkar, Nitin, Ramesh, K.T., Hogan, James
Dynamic brittle fragmentation is typically described using analytical and computational approaches for tensile stress-states. However, most fragmentation applications (e.g., impact, blast) involve very large initial compressive stresses and deformations. In this study, the compressive...
-
Quantification of damage and its effects on the compressive strength of an advanced ceramic
Download2019-01-03
Krimsky, Erez, Ramesh, K.T., Bratcher, M., Foster, M., Hogan, James D.
An understanding of the dynamic failure of damaged ceramics is important in protection applications, where the interaction of the projectile with cracked material is a contributing factor in the overall system performance. In this paper, we investigate the effects of pre-existing internal cracks...