Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : density


Effect of Micro Powder on Mechanical and Physical Properties of Glass Fiber Reinforced Epoxy Composite

Aseel Basim Abdul-Hussein; Fadhel Abbas Hashim; Tamara Raad Kadhim

Engineering and Technology Journal, 2016, Volume 34, Issue 7, Pages 1402-1414

In the present study, composites were prepared by Hand lay-up molding. The composites constituents were epoxy resin as the matrix, 3% volume fractions of Glass Fibers (G.F) as re enforcement and 2%, 4%, 6% volume fraction of micro powder (Aluminum Oxide Al2O3, Silicon Oxide SiO2 and Titanium Oxide TiO2) as filler. Studied the, hardness test, flexural strength, density, water absorption measurements and tests were conducted to reveal their values for each type of composite material. The results showed that the non – reinforced epoxy have lower properties than nano composites material. Measured density results had show an incremental increase with volume fraction increase and water absorption, hardness, and flexural strength had show an incremental increase with volume fraction increase and with smaller particle size.

Effect of Degassing Process of Squeeze Casting Aluminum Alloy on Tensile Strength Under Different Pressures

Hussain J. Al-alkawi; Dhafir S. Al-Fattal; Samih K. Al-najjar

Engineering and Technology Journal, 2015, Volume 33, Issue 2, Pages 320-330

Degassing technique currently applied to cast aluminum alloys due to its technological and economic advantages. The present work aimed to study the effect of degassing technique of cast aluminum alloy (LM2) under different pressures using squeeze casting process. Inert argon gas was pumped into the molten aluminum with flow rate (2,5-5-7)l/min. at constant pumped duration (5min.). Different applied pressures were used(17, 35, 52) MPa. The test was performed at room temperature. The physical and mechanical properties of degassed samples were measured and compared with non-degassing (ND) samples. The results showed that the best condition of degassing is found at 2.5 l/min flow rate and 35 MPa applied pressure. It was found that a slight difference is observed for the density and the lowest value of porosity was obtained at 2.5 l/min flow rate and 52 MPa applied pressure.

Effect of Nature Materials Powders on Mechanical and Physical Properties of Glass Fiber / Epoxy Composite

Aseel Basim Abdul-Hussein; Emad Saadi AL-Hassani; Reem Alaa Mohammed

Engineering and Technology Journal, 2015, Volume 33, Issue 1, Pages 175-197

In the present study composites were prepared by Hand lay-up molding. The composites constituents were epoxy resin as the matrix, 6% volume fractions of Glass Fibers (G.F) as reinforcement and 3%, 6% of nature material (Rice Husk Ash, Carrot Powder, and Sawdust) as filler. Density, water absorption, hardness test, flexural strength, shear stress measurements and tests were conducted to reveal their values for each type of composite. True density results had shown an incremental increase with volume fraction increasing and water absorption, hardness, flexural strength and shear stress results had shown an incremental increase with volume fraction increasing with smaller particle size.

Improvement of The Mechanical and Thermal Properties of Clay Bricks by Using Local Materials in Iraq

Haqi Ismael Qatta

Engineering and Technology Journal, 2012, Volume 30, Issue 19, Pages 3308-3327

This research studies the effect of adding industrial wastes materials with
different percentages on the thermal and mechanical properties of clay
bricks . Different types of admixtures were used in this work, including
rubber cuttings, wood saw dust and barley reeds ash with ( 5%,10% 15%
,20% ) by weight of each one respectively. Thermal conductivity, specific heat
capacity, compressive strength, flexural tensile strength, porosity and variation
of density have been examined for each samples at all percent of addition
and comparing with the reference clay bricks samples . Test results show that
the admixtures effect on the properties of clay bricks, when used barley reeds
ash which the best additives because take good properties, the density of clay
bricks is reduced 33%,thermal conductivity reduced 46% and the compressive
strength increased 20% comparing with the standard bricks. The experimental
work carried in the industrial factory of clay bricks in the Nahrawon city in
Baghdad.