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Skip to Search Results- 7Strain rate
- 4Brittle materials
- 3Dynamic fragmentation
- 2Brittle fracture
- 2Compression
- 2Ejecta measurements
- 4Hogan, James
- 2Bhagavathula, Kapil Bharadwaj
- 2Hogan, James D.
- 2Meredith, Christopher S.
- 2Ouellet, Simon
- 2Rogers, Robert
- 1Chen, Zengtao (Mechanical Engineering Department)
- 1Driver, Robert G. (Department of Civil and Environmental Engineering)
- 1Grondin, Gilbert Y. (Department of Civil and Environmental Engineering)
- 1Hogan, James (Mechanical Engineering Department)
- 1Jar, P. -Y. Ben (Department of Mechanical Engineering)
- 1Li, Dongyang (Chemical and Material Engineering)
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2016
Lamberson, Leslie, Pagano, Steven, Hogan, James
The rate-dependent compressive response and resulting fragmentation characteristics of dry ox cortical bone and cyanoacrylate-based cortical bone surrogate material was investigated in two material orientations. Tests were conducted under quasi-static (10−3 s−1) and dynamic (103 s−1) loading in...
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Debris Field Kinetics during the Dynamic Fragmentation of Polyphase Natural Ceramic Blocks: Ejecta Measurements and Damage Modes
Download2013
Hogan, James, Schneider, Markus, Rogers, Robert, Spray, John, Vincent, Gregory
The dynamic fragmentation of coarse and fine grained granitoid blocks during impact has been examined for energies of 1.9 kJ to 3.0 kJ and 2.7 kJ to 6.8 kJ, respectively. A particle tracking algorithm was developed to measure ejecta size and velocity at the rear of the target for a horizontal...
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Fall 2014
Ductile and brittle failure behaviors of semi-crystalline polymers such as high density polyethylene (HDPE) were investigated under uni-axial tensile loading at various test conditions. The first part of the thesis examines the influence of aspect ratio of rectangular cross-section on the...
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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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Effect of strain rate on tribological properties of pre-deformed alloys via work function analysis
DownloadFall 2018
In industries such as automobile, aerospace and shipping, components made of magnesium and copper alloy could have the chance to bump against other objects during transportation applications. The damage caused by local deformation at high strain rates when other damage processes are involved,...
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Impact Failure of Planetary Materials: Lateral Field Ejecta Measurements using Particle Image Velocimetry
Download2014
Schneider, Markus, Spray, John, Rogers, Robert, Hogan, James, Vincent, Gregory
The dynamic fragmentation of a fine grained granitoid material has been examined. Target thicknesses ranged from 7 to 40 mm and impact energies from 12 to 2,500 J. Combined particle image velocimetry and image enhancement techniques are introduced and have been used to measure the size and...
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Physics-Based Modeling of Failure of Novel Light-Weight Materials: Applications to Computational Design of Materials
DownloadFall 2021
Advanced physics-based computational models have been developed in this thesis to study dynamic failure in novel light-weight materials used in impact applications, focusing on applying different computational techniques to study three material systems: 1. novel self-propagating high-temperature...
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Fall 2009
A nonlinear finite element model was developed to study the behaviour of unstiffened steel plate shear walls. The model was validated using the results from quasi-static and dynamic experimental programs. With the validated finite element model, the performance of 4-storey and 8-storey Type D...
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The Effects of Microstructure and Confinement on the Compressive Fragmentation of an Advanced Ceramic
Download2014
Farbaniec, Lukasz, Shaeffer, Matt, Ramesh, K.T., Hogan, James
We investigate the rate-dependent compressive failure and fragmentation of a hot-pressed boron carbide, under both uniaxial and confined biaxial compression, using quantitative fragment analysis coupled with quantitative microstructural analysis. Two distinct fragmentation regimes are observed,...