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2019-01-01

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

This paper explores microstructural and mechanical variability in porous ceramics, combining advanced X-ray computed tomography (XCT) and digital image correlation (DIC) techniques to characterize an alumina material. The results show low variability in microstructure, with median pore size...

2021-11-01

Bhagavathula, K.B., Parcon, J.S., Azar, A., Ouellet, S., Satapathy, S., Dennison, C.R., Hogan, James D.

In this work, the authors study the thermo-mechanical response of a dilatant polymeric foam in quasistatic tension and compression, focusing on the links between microstructure, mechanical response, and associated temperature rises in these materials. The authors study these links for a...

2023-05-01

Chang, Junhao, Chen, Zengtao, Hogan, James D.

The functionalization of nanoporous ceramics for applications in healthcare and defence necessitates the study of the effects of geometric structures on their fundamental mechanical properties. However, there is a lack of research on their stiffness and fracture strength along diverse directions...

2023-03-01

Shao, Chenwei, Li, Haoyang, Zhu, Yankun, Li, Peng, Yu, Haoyang, Zhang, Zhefeng, Gleiter, Herbert, McDonald, André, Hogan, James D.

Nanostructured materials are being actively developed, while it remains an open question how to rapidly scale them up to bulk engineering materials for broad industrial applications. This study propose an industrial approach to rapidly fabricate high-strength large-size nanostructured metal...

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...

2021-06-01

Lo, Calvin, Li, Haoyang, Toussaint, Geneviève, Hogan, James D.

A comparative study on the microstructure, rate-dependent compressive behavior, and ballistic performance of commercially available pressureless sintered boron carbide-titanium diboride (material Z) and hot-pressed boron carbide (material S) was conducted. Under quasi-static compression at rates...

2020-08-25

Munday, Guriqbal, Hogan, James D., McDonald, André

This study improves upon understanding of the effects of reinforcing particle content and microstructure on the mechanical properties and failure of low-pressure cold spray fabricated tungsten carbide-nickel (WC-Ni) metal matrix composite (MMC) coatings. Image analyses were performed on scanning...

2020-07-01

Li, Haoyang, Motamedi, Pouyan, Hogan, James D.

This study investigated the rate-dependent mechanical properties and failure of a self-propagating high-temperature synthesized TiAl/Ti3Al-Al2O3 cermet using mechanical testing and advanced microscopy. Quasi-static and dynamic uniaxial compression tests coupled with high-speed imaging and digital...

2022-07-27

Amirian, Benhour, Jafarzadeh, Hossein, Abali, Bilen Emek, Reali, Alessandro, Hogan, James D.

Crack initiation and propagation as well as abrupt occurrence of twinning are challenging fracture problems where the transient phase-field approach is proven to be useful. Early-stage twinning growth and interactions are in focus herein for a magnesium single crystal at the nanometer...

2021-05-25

Sharma, Nitin Kumar, Kannan, Rangasayee, Hogan, James D., Fisher, Gary, Li, Leijun

Surface mining causes significant wear damage that affects equipment performance, reliability, and lead to associated downtime costs. To improve the wear resistance of components used in natural resources industries, cemented carbide tiles are joined to engaging surfaces of the components....