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Skip to Search Results- 6Digital image correlation
- 5Boron carbide
- 5Microstructure
- 4Brittle failure
- 4Failure mechanisms
- 4Nickel
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In-situ visualisation of dynamic fracture and fragmentation of an L-type ordinary chondrite by combined synchrotron X-ray radiography and microtomography
Download2021-05-01
Farbaniec, Lukasz, Chapman, David J., Patten, Jack R.W., Smith, Liam C., Hogan, James D., Rack, Alexander, Eakins, Daniel
The relationship between the dynamic mechanical properties of stony meteorites and their microstructures was investigated in-situ for an L-type ordinary chondrite using a split-Hopkinson pressure bar apparatus and ultra-high speed phase-contrast X-ray radiography at the European Synchrotron...
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Mechanical and microstructural properties of a CoCrFe0. 75NiMo0. 3Nb0. 125 high-entropy alloy additively manufactured via cold-spray.
Download2022-02-10
Rojas, David Funes, Li, Haoyang, Orhan, Okan K., Shao, Chenwei, Hogan, James D., Ponga, Maricio
We present a combined experimental and computational investigation of the mechanical properties of a CoCrFe0.75NiMo0.3Nb0.125 (composition in molar ratio) high-entropy alloy additively manufactured via cold spray. We find that the sprayed alloy exhibits extraordinary mechanical properties under...
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Micro-hardness and strain-rate-dependent compressive response of an ultra-light-weight Mg-Li-Al alloy
Download2022-01-15
Li, Haoyang, Shao, Chenwei, Rojas, David Funes, Ponga, Mauricio, Hogan, James D.
A study on the microstructure and composition, micro-hardness and strain-rate-dependent compressive behaviors, and the associated failure mechanisms of an ultra-light-weight Mg-Li-Al alloy were conducted. X-ray diffraction and X-ray photoelectron spectroscopy showed a multi-phase material with...
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Microstructural and mechanical characterization of variability in porous advanced ceramics using X-ray computed tomography and digital image correlation.
Download2019-01-01
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...
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Microstructure evolution and infrared thermography applied to tensile failure of a dilatant polymeric foam
Download2021-11-01
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...
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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...
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On the evaluation of mechanical properties and ballistic performance of two variants of boron carbide
Download2021-06-01
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...
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On the microstructure-dependency of mechanical properties and failure of low-pressure cold-sprayed tungsten carbide-nickel metal matrix composite coatings
Download2020-08-25
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...
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On the Rate-dependency of Mechanical Properties and Failure Mechanisms of a (γ + α2) - TiAl/Ti3Al-Al2O3 Cermet
Download2020-07-01
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...
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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...