Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Physical properties


Improving the Properties of Main Drainage Water by Using of Magnetic Field Technique

Olla H. Kareem; Abdul Hameed M.J. Al-Obaidy; Riyad H. Al-Anbari

Engineering and Technology Journal, 2019, Volume 37, Issue 6A, Pages 195-200
DOI: 10.30684/etj.37.6A.2

In this research, main drainage channel treated by using a magnetic field with a density of (6000 Guesses). The general drain water samples flowed through the magnetic field with three levels of treatment (5 minutes, 15 minutes and 30 minutes) depending on the contact time. After treatment, it was found that the magnetic field works to improve more than ten physical and chemical properties of water. Essentially, Magnetic treatment has had a significant effect on the high salt content found in general drain water samples as it has been reduced and converted into simpler compounds. In addition, the magnetic field has an important role in increase the percentage of dissolved oxygen in water.

Optimization Using Taguchi Method for Physical and Mechanical Properties of Bio Mimicking Polymeric Matrix Composite for Orthodontic Application

Jenan S. Kashan

Engineering and Technology Journal, 2019, Volume 37, Issue 5A, Pages 181-187
DOI: 10.30684/etj.37.5A.5

This work take in consideration the application of Taguchi optimization methodology in optimizing the parameters for processing (composition, compounding pressure) and their effects on the output physical (Density and true porosity) properties and mechanical(fracture strength and microhardness) properties for the Nano HA,Al2O3 fillers reinforced HDPE hybrid composite material for orthodontic application. An orthogonal array of the Taguchi approach was used to analyses the effect of the processing parameters on the physical and mechanical properties. On the other hand, the surface roughness and particle size distribution were also calculated to study their effect on the output properties. The result shows that the Taguchi approach can determine the best combination of processing parameters that can provide the optimal physical and mechanical conditions, which are the optimum values (the optimum composition was15HA/ 5Al2O3/80HDPE, and optimum compounding pressure was102 MPa.

Development the Physical Properties of Polymeric Blend (SR/ PMMA) by Adding various Types of Nanoparticles, Used for Maxillofacial Prosthesis Applications

Sihama I. Salih; Jawad K. Oleiwi; Hajir M. Ali

Engineering and Technology Journal, 2019, Volume 37, Issue 4A, Pages 120-127
DOI: 10.30684/etj.37.4A.2

As maxillofacial defects increased due to cancer; it became necessary to select high-quality prosthetic materials in this field. Silicone rubber is widely used in damaged maxillofacial affected areas replacement surgery as bio material. The aim of this research, prepared a nano composites materials, from polymer blend (silicone rubber: 5% PMMA) reinforced by different types of nano-powders; pomegranate Peels Powder (PPP), Seeds powder of dates Ajwa (SPDA) and TiO2 nano-powders with loading level (0.0, 0.1, 0.2, 0.3 and 0.4%). Some physical properties such as density, water absorption, and Thermo-Physical test, FTIR analysis, as well as, FTIR, antibacterial tests were done on prepared samples. The results showed that the composites material based of polymer blend with optimum percent are of 0.2% of pomegranate Peels Powder (PPP), 0.3% of Seeds powder of dates Ajwa (SPDA) and 0.1% of TiO2 nano-powders that have ideal characteristic. Also for antibacterial tests, polymeric blend composites with optimum percent of this nano-powders show that more antibacterial efficiency against S.aureus bacteria than E.coli bacteria.

Improvement the Mechanical and Physical Properties of Epoxy–Polyurethane Matrix Resin by Using Kevlar Fiber and ZnO Particles

M.R. Gharkan

Engineering and Technology Journal, 2017, Volume 35, Issue 3, Pages 261-266

This work focuses on the synthesis of hybrid polymer composite matrix materials prepared from the epoxy–Polyurethane resin (Polyprime EP) as matrix reinforced phase by using (5%, 10%, 15% and 20%) Zinc oxide particles and 5% woven roving Kevlar fiber (00-900) kind (49). Mechanical and physical tests such as tensile strength, impact strength, hardness, density, thermal conductivity, and water absorption were done. The results showed increased hardness with increasing volume fraction of ZnO for the ratios (5%, 10%, 15% and 20%). The impact strength was increased for volume fraction of zinc oxide at 15%, modulus of elasticity at 5%, thermal conductivity at 20% and density test at 10%. The stress increased at volume fraction of zinc oxide at 10% and 15%. The water absorption decreased with increasing volume fraction of ZnO additives.

Physical and Mechanical Properties Estimation of Ti/HAP Functionally Graded Material Using Artificial Neural Network

Jawad K. Oleiwi; Rana A. Anaee; Sura A. Muhsin

Engineering and Technology Journal, 2016, Volume 34, Issue 12, Pages 2174-2180

This study presents the effort in applying neural network-based system identification techniques by using Back- propagation algorithm to predict somephysical mechanical properties of functionally graded and compositesamples from Ti/HAP, these samples were fabricated by powder metallurgy method at various volume fraction of hydroxyapatite and at n equal (0.8, 1, and 1.2). Because of important of advanced materials such as FGMs as alternative industrial material, it is necessary to measure the physical properties of these materials such as porosity, density, hardness, compression …etc. Therefore the ANN will be used to estimate these properties and give a good performance to the network.

High Performance Concrete Improvement by Styrene-Butadiene Rubber Addition

Alaa Abdulhasan Atiyah; Saad B. H. Farid; Ahmed Saad Kadhim

Engineering and Technology Journal, 2016, Volume 34, Issue 12, Pages 2296-2309

In this paper, the properties of high performance concretes modified by polymer were studied. Liquid synthetic styrene-butadiene rubber (SBR) was added (5%, 10% and 15%) by weight of cement to high performance concrete (HPC) to elucidate the effect of the polymer additive to their properties.The compressive strength, splitting tensile strength, flexural strength, porosity, dry density and total water absorption were measured.Thermal conductivity, thermal diffusivity and specific heat of HPC isalso measured. In addition, SEM micrographs are compared reference and polymer modified HPC.The results show that there is an improvement in the workability for HPC after the addition of the polymer. Furthermore, the density of the set concrete was increased and both the porosity, total water absorption was decreased. Thermal conductivity, thermal diffusivity, and specific heat show improvement after polymer addition, which indicate better endurance.The SBR modified HPC, exhibits a significant improvement in splitting tensile strength and flexural strength, although it was at the expense of the compressive strength to some extent.The HPC has shown balanced microstructure before and after the addition of polymer, although they noticed improved on the ductile properties.

Study the Pollutants Chlorophenols: Electronic and Physical Properties Relationship

Abdul Hameed M.J. Al Obaidy; Ahmed A. Al-Amiery; Rana R. Al-Ani; Yasameen K. Al-Majedy; Furkan Kamil

Engineering and Technology Journal, 2016, Volume 34, Issue 3, Pages 349-357

Geometrical optimization and electronic structure of chlorophenols were researched by DFT (B3LYP) utilizing a 3-21G basis set. We have likewise researched the aggregate electronic properties, Highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO) and energy gap. The calculated HOMO and LUMO energies demonstrate that charge transfer occurs within the molecule.