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- 5Boron carbide
- 5Brittle failure
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- 4Compressive strength
- 4Nickel
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The effects of defects on the uniaxial compressive strength and failure of an advanced ceramic
Download2016
Ramesh, K., Farbaniec, Lukasz, Hogan, James D., Sano, Tomoko, Shaeffer, Matthew
This study investigates the effects of the processing-induced defect population on the dynamic compressive strength and failure of a hot-pressed boron carbide. Quantitative microscopic analysis was used to determine the distributions of three types of processing-induced inhomogeneities: aluminum...
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The mechanical response of a α2 (Ti3Al)+ γ (TiAl)-submicron grained Al2O3 cermet under dynamic compression: Modeling and experiment.
Download2019-01-01
Amirian, B., Li, H.Y., Hogan, James D.
Novel experimental data, obtained using an advanced digital image correlation technique coupled to ultra-high-speed photography, have been used to develop and validate a microstructure-dependent constitutive model for a α2(Ti3Al) + γ(TiAl)-submicron grained Al2O3 cermet. Utilizing experimental...
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2015-01-01
Schneider, Markus, Vincent, Gregory, Hogan, James D., Spray, John G.
Linear electromagnetic acceleration has a wide range of applications. Among them are applications in the field of materials science where relatively small, inexpensive systems can be of high value. For instance, it was shown recently at the French-German Institute of Saint Louis (ISL), France,...
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Thermodynamically-consistent derivation and computation of twinning and fracture in brittle materials by means of phase-field approaches in the finite element method
Download2022-10-01
Amirian, Benhour, Jafarzadeh, Hossein, Abali, Bilen Emek, Reali, Alessandro, Hogan, James D.
A theoretical-computational framework is proposed for predicting the failure behavior of two anisotropic brittle materials, namely, single crystal magnesium and boron carbide. Constitutive equations are derived, in both small and large deformations, by using thermodynamics in order to establish a...
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Towards optimization of thickness, hardness, and porosity of low-pressure cold sprayed WC-Ni coatings.
Download2021-01-01
Jibran, Wania, Hogan, James D., McDonald, André
In this study, a 33 full factorial design methodology was used to analyze the effects of spray parameters on the thickness, hardness, and surface porosity of low-pressure cold-sprayed WC-17Ni coatings. Three levels were selected for the spray parameters included in the design which were the...
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2020-01-01
Hurley, Ryan C., Hogan, James D.
The Army Research Office funded an invitation-only workshop entitled “Identifying Mathematical Challenges Associated with Failure of Brittle Materials” at the Johns Hopkins University, Maryland on May 20–21, 2019. The workshop brought together mathematicians, statisticians, and mechanics of...