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Browsing ME Faculty Publications by Title

Browsing ME Faculty Publications by Title

Now showing items 1-20 of 33

Analysis of the strain profile in thin Au/Ni multilayers by x-ray diffraction

Chaudhuri, J.; Gondhalekar, V.; Jankowski, A. F. (IEEE, 1992-04-01)

The strain relaxation in Au/Ni multilayers was analyzed in detail using a dynamical theory of x-ray diffraction. The depth profile of strain in the modulation direction was determined by an iterative fitting of the calculated ...
Analytical and experimental thermal analysis of multiple heat sources in integrated semiconductor chips

Lindsted, R. D.; DiCicco, D. A. (IEEE, 1972-05)

Because of the complexity and interconnection density of today's integrated circuit chips, experimental measurement of individual transistor or diode junction temperatures under typical powered conditions has become ...
Biothermal modeling of post-cryoplasty atherosclerosis in restenotic patients

Hsieh, Men-Chi; Ravigururajan, T. S. (Springer, 2007-03)

Atherosclerosis is a leading cause of heart diseases and mortality around the world. Recently, cryoplasty has emerged as a potential alternative method to treat arterial atherosclerosis. Finite element heat transfer and ...
Compliant contact force models in multibody dynamics: Evolution of the Hertz contact theory

Machado, Margarida; Moreira, Pedro; Flores, Paulo; Lankarani, Hamid M. (Elsevier, 2012-07)

Over the last decades, several compliant contact force models have been proposed. However, no complete and systematic comparison has been done on these models, which provides information on their range of application and ...
Cytotoxicity of release products from magnetic nanocomposites in targeted drug delivery

Wamocha, Humphrey Lusenaka; Misak, Heath Edward; Song, Z; Chu, H Y; Chen, Y Y; Asmatulu, Ramazan; Yang, Shang-You; Ho, J. C. (Sage Publications, 2011-11-09)

The efficacy of chemotherapy can be significantly improved if the therapeutic agent remains localized at the afflicted area and released at controlled rates. Such a targeted drug delivery can be achieved using magnetic ...
Determination of thickness of multiple layer thin films by an x-ray-diffraction technique

Chaudhuri, J.; Hashmi, F. (IEEE, 1994-10-01)

An x-ray-diffraction method for determining the thickness of multiple layer thin films grown on a single-crystal substrate is presented. The equations, based on the kinematical theory of x-ray diffraction and the mosaic ...
Dynamic response of multibody systems with multiple clearance joints

Flores, Paulo; Lankarani, Hamid M. (ASME - American Society of Mechanical Engineers, 2012-07)

A general methodology for the dynamic modeling and analysis of planar multibody systems with multiple clearance joints is presented. The inter-connecting body components that constitute a real joint are modeled as colliding ...
Effect of dents on crack growth in aluminum alloy under constant-amplitude loading

Smith, Bert; Shivally, Praveen; Kumar, Brijesh (AMER INST AERONAUT ASTRONAUT, 2012-03)

The purpose of this study was to determine the effect of dents on the stable crack growth in 0.04-in.-thick 2024-T3 bare aluminum sheet. The test specimens were either pristine, dented, or reworked. The edge-cracked ...
Effect of thermoplastic toughening agent on glass transition temperature and cure kinetics of an epoxy prepreg

Sabzevari, Seyed Mostafa; Alavi-Soltani, Seyed R.; Minaie, Bob (Springer, 2011)

The isothermal time–temperature-transformation (TTT) cure diagram is developed in this article to investigate the effect of thermoplastic toughening agent on glass transition temperature (T g) and cure kinetics of an epoxy ...
Effects of UV degradation on surface hydrophobicity, crack, and thickness of MWCNT-based nanocomposite coatings

Asmatulu, Ramazan; Mahmud, Gazi Arif; Hille, C. A.; Misak, Heath Edward (Elsevier, 2011-11)

Surface degradation is a common problem in polymeric coatings when they are exposed to sunlight, moisture, and oxygen. In order to reduce their surface degradation, thus keeping the coatings' original properties, multi-wall ...
Electrical and Thermal Characterization of Electrospun PVP Nanocomposite Fibers

Khan, Waseem Sabir; Asmatulu, Ramazan; Eltabey, Mohamed M. (Hindawi Publishing Corporation, 2013)

Polyvinylpyrrolidone (PVP) solutions incorporated with multiwall carbon nanotubes (MWCNTs) were electrospun at various weight percentages, and then the electrical resistance and some thermal properties of these nanocomposite ...
Evaluation of the kinematics and injury potential to different sizes of pedestrians impacted by a utility vehicle with a frontal guard

Moradi, Rasoul; Lankarani, Hamid M. (Taylor & Francis, 2011-10-19)

A review of accident data reveals that in most pedestrian accidents, the head and lower extremity injuries are the predominant areas of injury to the pedestrian. The vehicle front geometry profile and stiffness, as well ...
Fabrication and Properties of Dense Thin Films Containing Functionalized Carbon Nanofibers

Lim, Chee-Sern; Guzman, Mauricio; Schaefer, Joseph; Minaie, Bob (Elsevier, 2013-02)

In this study, dense thin films containing carboxylic acid-functionalized carbon nanofibers (O-CNFs) are fabricated by a two-step approach involving solution filtering and mechanical compression through a rolling process. ...
Failure analysis of carbon nanotube wires

Misak, Heath Edward; Sabelkin, V.; Mall, S.; Asmatulu, Ramazan; Kladitis, P. E. (Elsevier, 2012-06-15)

A failure analysis of four carbon nanotube (CNT) wires comprised of 1-, 30-, 60-, and 100-yarns was conducted when subjected to constant tension and cyclic tension-tension loading conditions. Each wire had different ...
A ferrofluid guided system for the rapid separation of the non-magnetic particles in a microfluidic device

Asmatulu, Ramazan; Zhang, B; Nuraje, Nurxat (American Scientific Publishers, 2010-10)

A microfluidic device was fabricated via UV lithography technique to separate non-magnetic fluoresbrite carboxy microspheres (approximately 4.5 microm) in the pH 7 ferrofluids made of magnetite nanoparticles (approximately ...
Globally asymptotic adaptive controller/observer for tracking in robots without velocity measurement

Malagari, Srinivasulu; Driessen, Brian J. (WILEY-BLACKWELL, 2012-05)

In this work, we present an adaptive observer/controller for a multiple degree of freedom robotic plant without velocity measurement and without knowledge of plant parameter values. For this considered plant, we propose ...
Globally exponential controller/observer for tracking in robots without velocity measurement

Malagari, Srinivasulu; Driessen, Brian J. (Blackwell Publishing, 2012-03)

In this work, we present an observer and continuous controller for a multiple degree of freedom robotic plant without velocity measurement. For this considered plant, we propose and present an observer/controller that ...
Joining glass fiber layers using a functionalized carbon nanofiber entangled network

Lim, Chee-Sern; Guzman, Mauricio E.; Minaie, Bob (Elsevier, 2012-12-05)

As-received glass fiber layers are joined using a carboxylic acid-functionalized carbon nanofiber (OCNF) entangled network utilizing a solution filtering process. Optical and SEM images of the OCNF/glass fiber assembly ...
Obtaining maximum benefits from laboratory instruction

Graham, A.R. (IEEE, 1982-10-18)
Prediction of residual stresses and distortion in carbon fiber-epoxy composite parts due to curing process using finite element analysis

Tavakol, Behrouz; Roozbehjavan, Pooneh; Ahmed, Ashraf; Das, Rony; Joven, Ronald; Koushyar, Hoda; Rodriguez, Alejandro; Minaie, Bob (Wiley-Blackwell, 2013-04-15)

To predict the final geometry of carbon fiber-epoxy composite parts, a methodology is introduced that takes into account cure kinetics, cure shrinkage, thermal strains, tool-part interface, and development of mechanical ...