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Skip to Search Results- 6Digital image correlation
- 5Boron carbide
- 5Brittle failure
- 5Microstructure
- 4Compressive strength
- 4Failure mechanisms
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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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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...
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Density, Microstructure, and Strain‑Rate Effects on the Compressive Response of Polyurethane Foams
Download2021-11-09
Bhagavathula, Kapil Bharadwaj, Meredith, Christopher S., Ouellet, Simon, Satapathy, Sikhanda S., Romanyk, Dan L., Hogan, James D.
Background A better understanding of the efect of density, microstructure, and strain rate on the mechanical response of polymeric foam materials is needed to improve their performance. Objective The objective of this paper is to study the combined infuence of density, microstructure, and...
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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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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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2022-06-01
Pisavadia, Harshil H., Dolenz, Patricia I., Hogan, James D.
Conference abstract. Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.
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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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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...
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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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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...