Mahfuz H. – TechConnect Briefs

Effect of Dispersion Conditions on the Thermo-Mechanical Properties of Functionalized Carbon Nanotube-Reinforced Vinyl Ester

Sabet S.M., Mahfuz H., Hashemi J., Florida Atlantic University, US

To date, controlling the microstructure of carbon nanotube (CNT)-polymer composites remains a challenge due to high tendency of CNTs to aggregate. Proper dispersion of CNTs in the matrix has to be guaranteed to employ CNTs [...]

SC-15 Epoxy Reinforced with Magnetic Nanofillers under Uniform Magnetic Field – An Investigation of Anisotropic Physical Properties

Malkina O., Mahfuz H., Sorge K.D., Rondinone A.J., Chen J., Rangari V.K., Florida Atlantic University, US

SC-15 epoxy is used in many industrial applications. It is well known that the mechanical and viscoelastic properties of epoxy can be significantly enhanced when reinforced with nanofillers. In this work, SC-15 epoxy is reinforced [...]

The Effects of POSS on the Interlaminar Shear Strength of Marine Composites under Various Environmental Conditions

Mahfuz H., Powell F., Granata R., Hosur M., Florida Atlantic University, US

The fiber/matrix (F/M) interface of carbon/vinyl ester composites has been modified by treating the carbon fiber with polyhedral oligomeric silsesquioxane (POSS). The objective was to improve the durability of the F/M interface in various environments. [...]

Improvement of Stab Resistant Body Armor Using SiO2 Nanoparticles Dispersed into Silane Coupling Agent through Sonic Cavitation

Lambert V., Mahfuz H., Bordner P., Florida Atlantic University, US

Enhancing a flexible body armor using the Shear Thickening Fluid theory (STF) with use of SiO2 nanoparticles has shown good results regarding the stab resistance. A completely new approach based on investigations demonstrates that silated [...]

Synthesis of Shear Thickening Fluid Using Sonochemical Method

Rangari V.K., Hassan T.A., Mahfuz H., Jeelani S., Tuskegee University, US

Shear thickening fluid is developed using sonochemical method which one step process and can be processed from its dry metal oxide powder forms instead of its colloidal solution. The main problem with the current process [...]

Development of Stab Resistant Body Armor using Fumed SiO2 Nanoparticles Dispersed into Polyethylene Glycol (PEG) through Sonic Cavitation

Mahfuz H., Clements F.E., Stewart J., Florida Atlantic University, US

Traditionally, the development of shear thickening fluid (STF) begins with micron size silica suspended in water. This material is transformed into STF through centrifugation and exchange processes. In other approaches polyethylene glycol (PEG) is added [...]

Improvements in High Specific Strength Epoxy-Based Composites using High Magnetic Fields

Mahfuz H., Zainuddin S., Rangari V.K., Jeelani S., Tuskegee University, US

Numerous studies have been carried out, over a period of several years, on the detection of changes in physical characteristics of polymers subjected to high magnetic fields during the curing stages. Extremely large increases in [...]

Investigation of Thermal and Mechanical Response of Nylon-6 Filaments with the Infusion of Acicular and Spherical Nanoparticles

Mahfuz H., Hasan M.M., Rangari V.K., Jeelani S., Tuskegee University, US

It has been demonstrated in recent years that infusion of nanoparticles in thermoset as well as in thermoplastic polymers can help improve the chemical, thermal, and mechanical properties significantly. The improvement in properties can be [...]

Synthesis & Mechanical Characterization of Carbon/Epoxy Composites Reinforced with SiC Nano Particles

Chisholm N., Mahfuz H., Rangari V., Rodgers R., Jeelani S., Tuskegee Unviersity, US

Room temperature cure Epoxy resin has been doped with SiC nanoparticles through an ultrasonic cavitation process. The modified resin is then utilized in a Vacuum Assisted Resin Transfer Molding (VARTM) process with satin weave carbon [...]