Effect of Possivity on The Mechanical Machined Surfaces
Effect of Possivity on The Mechanical Machined Surfaces
Volume 25, Issue 1 , March 2007, Page 1-8

https://doi.org/10.30684/etj.25.1.1

Abstract
  The object of this research is to study the passivity of parts surfaces produced from steel and its alloy. The study steps include, preparing specimens of low carbon steel ,with (dimension ...  Read More ...
Study of 2-D Laminar Flow In A pipe With A sudden Contraction of Cross Sectional Area
Study of 2-D Laminar Flow In A pipe With A sudden Contraction of Cross Sectional Area

Khudheyer S. Mushate

Volume 25, Issue 1 , March 2007, Page 1-8

https://doi.org/10.30684/etj.25.1.2

Abstract
  The paper presents a detailed numerical study of laminar flow in a pipe with sudden contraction in its cross sectional area. A computer program has been developed to analyze the laminar ...  Read More ...
Design Effect of The Welded Joints On Fatigue Strength For Low Carbon Steel Metal (ST- 52- 3)
Design Effect of The Welded Joints On Fatigue Strength For Low Carbon Steel Metal (ST- 52- 3)
Volume 25, Issue 1 , March 2007, Page 9-22

https://doi.org/10.30684/etj.25.1.3

Abstract
  The aim of the present research is to evaluate the best welded joints of types (V, VV, U,UU) and comparing them with the base metal type (ST-52-3) which is used in awide range at industry ...  Read More ...
Parametric Study On The Effect Of The Fiber Reinforced Polymer(FRP) Pad On The Stress Intensity Factor of A Cracked Pipe
Parametric Study On The Effect Of The Fiber Reinforced Polymer(FRP) Pad On The Stress Intensity Factor of A Cracked Pipe

Wail e N. Al-Rifai; Waleed Khalil Ahmed

Volume 25, Issue 1 , March 2007, Page 9-24

https://doi.org/10.30684/etj.25.1.4

Abstract
  In this paper the effect of using FRP bonded pad to reinforce damaged pipes subjected to internal pressure is investigated. Outer Longitudinal edge crack was simulated by using standard ...  Read More ...
Thermal Initiation of Methylmethacrylate by Methoxy–oxobis [N-(4-bromophenyl) Salicylideneiminato] Vanadium (V)
Thermal Initiation of Methylmethacrylate by Methoxy–oxobis [N-(4-bromophenyl) Salicylideneiminato] Vanadium (V)

Najat J. Saleh

Volume 25, Issue 1 , March 2007, Page 26-36

https://doi.org/10.30684/etj.25.1.5

Abstract
  Methoxy – oxo - bis [N - (4-bromophenyl ) Salicylidene – iminato ] Vanadium (V) : [VO (Br C6 H4 N : C H O C6 H4 )2 OCH3  can initiate methylmethacrylate thermally at ...  Read More ...
Finite Element Analysis of the Rake Angle Effects on Residual Stresses in a Machined Layer
Finite Element Analysis of the Rake Angle Effects on Residual Stresses in a Machined Layer

Maan Aabid Tawfiq

Volume 25, Issue 1 , March 2007, Page 36-48

https://doi.org/10.30684/etj.25.1.6

Abstract
  In this paper, a plane strain Finite Element Method is developed and applied to model and simulate the orthogonal metal cutting of (AISI 1045 St) with continuous chip formation. Seven ...  Read More ...
Electrical and Photovoltaic Properties of In-pSi Contact
Electrical and Photovoltaic Properties of In-pSi Contact

Khalid Z. Yahya

Volume 25, Issue 1 , March 2007, Page 49-55

https://doi.org/10.30684/etj.25.1.7

Abstract
  In the present work, the electrical and photovoltaic properties of In-pSi contact were investigated for the first time. Two creditable methods were used to determine the value of barrier ...  Read More ...
NC Roughing Maching of Cavities Defined by Surface of Revolution Approach
NC Roughing Maching of Cavities Defined by Surface of Revolution Approach

Wissam K. Hamdan

Volume 25, Issue 1 , March 2007, Page 56-77

https://doi.org/10.30684/etj.25.1.8

Abstract
  In the NC roughing phase of cavities, process planar needs to find the machining layers as well as the feasible cutters for these layers. This Paper deals with the issues of Cavity ...  Read More ...
Mixed Convection in The Entry Region of a Vertical Annulus with a Constant Temperature Rotating Inner Cylinder
Mixed Convection in The Entry Region of a Vertical Annulus with a Constant Temperature Rotating Inner Cylinder

Akeel A. Mohammed

Volume 25, Issue 1 , March 2007, Page 78-96

https://doi.org/10.30684/etj.25.1.9

Abstract
  Laminar air flow combined convection in a vertical annulus with a constant temperature rotating inner cylinder is treated on the basis of a developing flow model, and the basic differential ...  Read More ...
Effect Of Solid Catalyst On Bubble Rise Velocity And Gas- Drift Flux In Three-Phase-Columns
Effect Of Solid Catalyst On Bubble Rise Velocity And Gas- Drift Flux In Three-Phase-Columns

Kamal Mohammad Ahmad

Volume 25, Issue 1 , March 2007, Page 97-102

https://doi.org/10.30684/etj.25.1.10

Abstract
  The bubble rise velocity and drift flux were measured in 0.051 m i.d glass column with ethanol as the liquid phase, cobalt catalyst as the solid phase in concentration varying from ...  Read More ...
Early Manufacturing Cost Estimate For Mechanical Parts
Early Manufacturing Cost Estimate For Mechanical Parts

Khalid Karam Abd

Volume 25, Issue 1 , March 2007, Page 103-116

https://doi.org/10.30684/etj.25.1.11

Abstract
  In manufacturing environment cost estimates process is made in all stages of product development from research to final product. Good estimating techniques and procedures are necessary ...  Read More ...
Grillage Analysis of Plates for Vibration and Stability
Grillage Analysis of Plates for Vibration and Stability

Sabih Z. Al-Sarraf; Ammar A. Ali

Volume 25, Issue 1 , March 2007, Page 117-131

https://doi.org/10.30684/etj.25.1.12

Abstract
  This study deals with the problem of approximating the dynamic and static analysis of plates by using equivalent grid-framework model. The emphasis, for plate analysis, is on the stability ...  Read More ...