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Skip to Search Results- 2Bhagavathula, Kapil Bharadwaj
- 2Hogan, James
- 2Hogan, James D.
- 2Meredith, Christopher S.
- 2Ouellet, Simon
- 2Romanyk, Dan L.
- 1Ayranci, Cagri (Mechanical Engineering)
- 1Driver, Robert G. (Department of Civil and Environmental Engineering)
- 1Grondin, Gilbert Y. (Department of Civil and Environmental Engineering)
- 1Jar, P. -Y. Ben (Department of Mechanical Engineering)
- 1Li, Dongyang (Chemical and Material Engineering)
- 1Martin, Derek (Civil and Environmental Engineering Department)
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Spring 2018
Shape memory polymers (SMPs) can be used in many critical applications, including biomedical and aerospace fields, due to their ability to recover their original/permanent shape from a deformed/temporary shape upon application of a stimulus. SMPs are subjected to bending in a large number of...
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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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Fall 2009
The vulnerability and movement behaviour of slow moving slides are investigated. The study focuses on slides moving at rates ranging from a few millimetres a year like extremely slow slides, to 13 meters per month, the upper velocity range of slow slides. An extensive review of the effect of pore...
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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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Deformation Transitions and their Effects on the Long-term Performance of Polyethylene and its Pressure Pipe
DownloadFall 2021
Ductile-to-brittle (DB) transition is of tremendous importance for lifetime prediction of polyethylene (PE). Majority of current methods for determining critical stress for the DB transition of PE products use notched coupon specimens in order to shorten the test timeframe. However, those work...
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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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Spring 2010
Coke drums are vertical pressure vessels used in the delayed coking process in petroleum refineries. Significant temperature variation during the delayed coking process causes the useful life of coke drums to be shortened. In order to better understand the failure mechanisms, a experimental study...
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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...