Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition
Retarding of Precipitation Hardening of Al-Cu Alloy by Cadimium Addition

Sabreen Ali; Alaa A. Atiyah; Amin D. Thamir

Volume 31, Issue 16 , September 2013, Page 2997-3006

https://doi.org/10.30684/etj.31.16A.1

Abstract
  The aim of the present work is to prepare a set of Al-Cu alloys with slow precipitation hardening by aging. Present work results can be utilized during the importing or exporting of ...  Read More ...
Modeling and Simulation of the Cogeneration Plant Equipped with Back-Pressure Turbine Operates at Various Control Programs of Exit Steam Temperature
Modeling and Simulation of the Cogeneration Plant Equipped with Back-Pressure Turbine Operates at Various Control Programs of Exit Steam Temperature

Moayed Razoki Hasan; Mohammed Jasim Salih

Volume 31, Issue 16 , September 2013, Page 3007-3034

https://doi.org/10.30684/etj.31.16A.2

Abstract
  Cogeneration represents one of the main ways for increasing the efficiency of primary energy use. This paper deals with a theoretical analysis of cogeneration plants equipped with various ...  Read More ...
Characterization of Niti Super Elasticity Shape Memory Alloys
Characterization of Niti Super Elasticity Shape Memory Alloys

Rasha Ali Hussein; Emad S. Al-Hassani; Sahib M. Al-Saffar

Volume 31, Issue 16 , September 2013, Page 3035-3051

https://doi.org/10.30684/etj.31.16A.3

Abstract
  Ni-Ti samples were prepared by powder metallurgy. The prepared samples were master samples M1 (55% Ni- 45%Ti) and M2 (56% Ni- 44%Ti). The additive percentage of Ta was 5%, 7% and 9% ...  Read More ...
Deformation Characteristics of Base and Subbase Layers under Monotonic & Cyclic Loading
Deformation Characteristics of Base and Subbase Layers under Monotonic & Cyclic Loading

Omar Abbas AL-Azzawi; Namir. K.S. AL-Saoudi; Falah Hassan Rahil

Volume 31, Issue 16 , September 2013, Page 3052-3060

https://doi.org/10.30684/etj.31.16A.4

Abstract
  Base and Subbase layers are considered as the platform for distributing the different applied stresses in flexible pavements. The two layers must provide sufficient strength to resist ...  Read More ...
Preparation and Characterization of Porous Anodic Alumina membrane
Preparation and Characterization of Porous Anodic Alumina membrane

Ahmed. A. Hashoosh; Kahtan. K. Al-Khazraji; Ahmed. A. Moosa

Volume 31, Issue 16 , September 2013, Page 3061-3066

https://doi.org/10.30684/etj.31.16A.5

Abstract
  Porous Anodic Alumina (PAA) was prepared by two-step anodization on both sides of an aluminium foil. The anodization carried out at anodizing temperature 17oC using oxalic acid as an ...  Read More ...
Optimal Sizing of Photovoltaic Irrigation Water Pumping System in Samara
Optimal Sizing of Photovoltaic Irrigation Water Pumping System in Samara

Ali H. Al-Hamdani; Majed Hassan; Roshen Tariq Ahmad

Volume 31, Issue 16 , September 2013, Page 3067-3077

https://doi.org/10.30684/etj.31.16A.6

Abstract
  Water pumping from wells and rivers for irrigation is a well established procedure on many farms in Iraq and is practical on various levels around the world. Typical irrigation systems ...  Read More ...
Carbon Nanotube Prepared by Pulse Laser Ablation of Graphite Target in Iso-Propanol Solution
Carbon Nanotube Prepared by Pulse Laser Ablation of Graphite Target in Iso-Propanol Solution

Khawla S. khashan; Mayyadah H. Mohsin

Volume 31, Issue 16 , September 2013, Page 3078-3089

https://doi.org/10.30684/etj.31.16A.7

Abstract
  In this work carbon nanotube was synthesis by pulse laser ablation of graphite target in Iso-propanol solution. Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible Spectrophotometer ...  Read More ...
Mechanical Properties of Reactive Powder Concrete (RPC) with Various Steel Fiber and Silica Fume Contents
Mechanical Properties of Reactive Powder Concrete (RPC) with Various Steel Fiber and Silica Fume Contents

Lubna S. Danha; Wasan Ismail Khalil; Hisham M. Al-Hassani

Volume 31, Issue 16 , September 2013, Page 3090-3108

https://doi.org/10.30684/etj.31.16A.8

Abstract
  An experimental work was carried out to investigate some mechanical properties of Reactive Powder Concrete (RPC) which are particularly required as input data for structural design. ...  Read More ...
The Effect of Operating Factors on the Pollutants Emission from a Constant Pressure Burner
The Effect of Operating Factors on the Pollutants Emission from a Constant Pressure Burner

Abdul Al-Kadhim M. Hasan; Abdul Sattar Jawad M.Hasan; Riyadh Salman Radhi

Volume 31, Issue 16 , September 2013, Page 3109-3124

https://doi.org/10.30684/etj.31.16A.9

Abstract
  This paper presents the effect of varying operating conditions on pollutants emission (carbon monoxide [CO], unburned hydrocarbon [UHC], and Soot) from constant pressure burner. In ...  Read More ...
Soil Site Investigations Using 2D Resistivity Imaging Technique
Soil Site Investigations Using 2D Resistivity Imaging Technique

Hussein H. Karim; Mohammed A. Al-Neami; Wisam M. Y. Mohammad

Volume 31, Issue 16 , September 2013, Page 3125-3146

https://doi.org/10.30684/etj.31.16A.10

Abstract
  The use of 2D Electrical Resistivity Imaging (ERI) technique in combination with geotechnical and geological data allow the determination of the lithological composition and detailed ...  Read More ...
Prediction and Investigation Particulate Fillers (Aluminum &Alumina) Effect on the Thermal Conductivity of Polymeric Matrix Composite (Polyester)
Prediction and Investigation Particulate Fillers (Aluminum &Alumina) Effect on the Thermal Conductivity of Polymeric Matrix Composite (Polyester)

Hasan A .Alasady; Ibtihal Al-Namie; Ahmed A.M

Volume 31, Issue 16 , September 2013, Page 3147-3158

https://doi.org/10.30684/etj.31.16A.11

Abstract
  The main objective of this paper is to study the thermal conductivity of composite materials and the parameters affecting it, then to determining the validity of the best theoretical ...  Read More ...
Corrosion Behaviour of Aluminium Alloy 7020-T6 welded Joint in Sea Water at Different Variables
Corrosion Behaviour of Aluminium Alloy 7020-T6 welded Joint in Sea Water at Different Variables

Huda Mohammed Abdulaziz

Volume 31, Issue 16 , September 2013, Page 3158-3185

https://doi.org/10.30684/etj.31.16A.12

Abstract
  were welded by using inert gas metal arc welding method (MIG)to obtain butt joint with geometry of single V at 45⁰with two pass. The joints were tested by X-ray radiography and faulty ...  Read More ...
Insertion of Rotational Effects to the Calculation of J-Integrals Using Finite and Boundary Element Methods
Insertion of Rotational Effects to the Calculation of J-Integrals Using Finite and Boundary Element Methods

Ameen Ahmed Nassar

Volume 31, Issue 16 , September 2013, Page 3186-3193

https://doi.org/10.30684/etj.31.16A.13

Abstract
  The calculation of J-integrals for cases with rotational effects using the finite or boundary elements needs special treatment. In this work, an attempt is made to derive the J-integral ...  Read More ...
Fabrication of Tio2 and V2o5 Thin Films by Powder Coating Technique
Fabrication of Tio2 and V2o5 Thin Films by Powder Coating Technique

Mohammed S. Hamza; Alaa Aladdin; Shatha Kazem

Volume 31, Issue 16 , September 2013, Page 3194-3202

https://doi.org/10.30684/etj.31.16A.14

Abstract
  Titanium dioxide (TiO2) and vanadium oxide (V2O5) in different mixing percentage (100, 50, 0)% from them powders as thin film on substrate of glass .the coating thickness was ( 0.37 ...  Read More ...
Flutter Estimation for Low Speed Aircraft Wing Using Fully Coupled Fluid – Structure Interaction
Flutter Estimation for Low Speed Aircraft Wing Using Fully Coupled Fluid – Structure Interaction

Mauwafak Ali Tewfik; Mohammed Idris Abu-Tabikh; Hayder Sabah Abd Al-Amir

Volume 31, Issue 16 , September 2013, Page 3203-3215

https://doi.org/10.30684/etj.31.16A.15

Abstract
  The aero elastic responses and the flutter condition of 3-D flexible aircraft wing were estimated by developed fully coupled fluid-structure interaction approach. The actual wing in ...  Read More ...