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- 5Boron carbide
- 5Brittle failure
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- 4Compressive strength
- 4Failure mechanisms
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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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Density, strain rate and strain effects on mechanical property evolution in polymeric foams
Download2022-03-01
Bhagavathula, Kapil Bharadwaj, Meredith, Christopher S., Ouellet, Simon, Romanyk, Dan L., Hogan, James D.
This study presents a comprehensive experimental study of the evolution of Poisson’s ratio and tangent modulus of polymeric foams during rate dependant uniaxial compression. In this study, polyurethane foams with densities of 195 kg/m3, 244 kg/m3, and 405 kg/m3 obtained from PORON (XRD series)...
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Computational modelling of the effect of microstructure on the abrasive wear resistance of tungsten-carbide nickel composite coatings under sub-critical cyclic impact loading
Download2022-05-15
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...
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An experimental study on the strain-rate-dependent compressive and tensile response of an alumina ceramic
Download2022-10-01
Ji, Min, Li, Haoyang, Zheng, Jie, Yang, Shuo, Zaiemyekeh, Zahra, Hogan, James D.
This research article studied the strain-rate-dependent mechanical response of a CeramTec Alotec 98% alumina ceramic under uniaxial compression and indirect tension loadings. Mechanical testing was carried out using a load frame for quasi-static strain rates and a split-Hopkinson Pressure Bar...
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Design of micro- and macro-scale polymeric metamaterial solutions for passive and active thermal camouflaging applications
Download2023-04-01
Pisavadia, Harshil, Asad, Asad, Sameoto, Dan, Dolez, Patricia, Hogan, James D.
This work utilizes predictive modeling techniques to guide and inform metamaterial design for heat management solutions and thermal radiation control. Specifically, micro- and macro-scale polyethylene-based solutions are proposed for passive and active thermal camouflage. A micro-scale post...
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In Situ Synchrotron X-Ray Diffraction Analysis of Phase Transformation in Epitaxial Metastable hcp Nickel Thin Films, Prepared via Plasma-Enhanced Atomic Layer Deposition
Download2018-01-01
Motamedi, Pouyan, Bosnick, Ken, Cadien, Ken, Hogan, James D.
Ultrathin metal films have a wide variety of applications, especially in microelectronics. A key method to deposit these films is plasma-enhanced atomic layer deposition (PEALD), which is known for its ability to deposit thin films conformally and at relatively low temperatures. Building on the...
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2018-01-01
Bhagavathula, Kapil Bharadwaj, Azar, Austin, Ouellet, Simon, Satapathy, Sikhanda, Dennison, Christopher R., Hogan, James D.
Polymeric foams are an essential part of personal protection equipment, such as helmets and body armor. In this work, the authors study the strain-rate dependent behavior of a dilatant polymeric foam, focusing on developing characterization and testing methodologies needed to better understand...
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Growth and Characterization of Metastable Hexagonal Nickel Thin Films via Plasma-Enhanced Atomic Layer Deposition
Download2017-07-01
Motamedi, Pouyan, Bosnick, ken, Cui, Kai, Cadien, Ken, Hogan, James D.
There is a great interest in various branches of the advanced materials industry for the development of novel methods (and improvements to existing ones) for the deposition of conformal ultrathin metallic films. In most of these applications, like enhanced solar absorbers and microelectronics,...
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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...
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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...