A Study on The Effect Heat Treatment Tempretature On Mechanical Properties And Fatigue For Steel CK35
A Study on The Effect Heat Treatment Tempretature On Mechanical Properties And Fatigue For Steel CK35
Volume 25, Issue 8 , October 2007, Page 265-276

https://doi.org/10.30684/etj.25.8.1

Abstract
  The aim of the research is to study the influence of heat treatment temperature onmechanical properties and limit fatigue of steel CK35. Tensile, impact and fatiguerotating bending ...  Read More ...
Studing Some Dielectric Properties and Effective Parameters of Composite Materials Containing of Novolak Resin
Studing Some Dielectric Properties and Effective Parameters of Composite Materials Containing of Novolak Resin
Volume 25, Issue 8 , October 2007, Page 277-288

https://doi.org/10.30684/etj.25.8.2

Abstract
  Dielectric constant (εr ) and dielectric strength (Ebr) of composite materials thatconsist of Novolak reinforced with glass fiber, Novolak reinforced with asbestosfiber and ...  Read More ...
Optical Method to Determine the Orientation of Monocrystalline Silicon Wafers
Optical Method to Determine the Orientation of Monocrystalline Silicon Wafers

Saria D. Al-Alagawi; Manal A. Aboud

Volume 25, Issue 8 , October 2007, Page 950-954

https://doi.org/10.30684/etj.25.8.3

Abstract
  In this work, an optical method was used for the determination of thecrystalline orientation of the chemically etched silicon surfaces in the (111),(110) and (100) planes. This method ...  Read More ...
Electrical and Photovoltaic Properties of Sb-pSi Contact
Electrical and Photovoltaic Properties of Sb-pSi Contact

Ammar Mukhlef Jasim

Volume 25, Issue 8 , October 2007, Page 955-960

https://doi.org/10.30684/etj.25.8.4

Abstract
  In the present work, the electrical and photovoltaic properties of Sb-pSicontact were investigated for the first time. Two creditable methods were usedto determine the value of barrier ...  Read More ...
A Mathematical Development of Gordon, Mills and Welch Generator Using Galois Field and Trace Polynomials
A Mathematical Development of Gordon, Mills and Welch Generator Using Galois Field and Trace Polynomials

Atheer Jawad Kadhim

Volume 25, Issue 8 , October 2007, Page 961-971

https://doi.org/10.30684/etj.25.8.5

Abstract
  The paper presents a newly developed method depending on tracepolynomial with new algorithm which has been written in Matlab language tomodify the Gordon, Mills and Welch generator ...  Read More ...
Spectral Analysis for Randomly Excited Articulated vehicles
Spectral Analysis for Randomly Excited Articulated vehicles

Kadhim Karim Muhsin

Volume 25, Issue 8 , October 2007, Page 972-987

https://doi.org/10.30684/etj.25.8.6

Abstract
  The spectral density analysis of the articulated vehicles is a subject of greatimportance and it is widely applied in the area of vehicles design and safety.So the vehicles when ride ...  Read More ...
Study of Tensile Strength and Hardness Property for Epoxy Reinforced With Glass Fiber Layers
Study of Tensile Strength and Hardness Property for Epoxy Reinforced With Glass Fiber Layers

Emad S. Al-Hasani

Volume 25, Issue 8 , October 2007, Page 988-997

https://doi.org/10.30684/etj.25.8.7

Abstract
  Tensile strength and hardness property were studied in an epoxy (DGEBA)resin as a matrix reinforced with glass fibers for different volume fraction aslayers.A comparison was done between ...  Read More ...
Critical Speed of Hyperbolic Disks and Eccentricity Effects on The Stability of The Rotor Bearing System
Critical Speed of Hyperbolic Disks and Eccentricity Effects on The Stability of The Rotor Bearing System

Muhannad Zedan Khalifa

Volume 25, Issue 8 , October 2007, Page 998-1011

https://doi.org/10.30684/etj.25.8.8

Abstract
  The critical speed of hyperbolic disks for the selected model is calculatedin three different cases, anisotropic material and thermal case, isotropicmaterial and thermal case finally ...  Read More ...
Properties of Glascrete Tiles
Properties of Glascrete Tiles

Shakir A. Al-Mishhadani; Mays F. Al-Rubaie

Volume 25, Issue 8 , October 2007, Page 1012-1022

https://doi.org/10.30684/etj.25.8.9

Abstract
  "Glascrete" is known as a concrete in which the aggregates wholly or partiallyconsist of crushed glass, where the glass is a unique material that could berecycled many times without ...  Read More ...
Organic Vapors Sensor Based on Dangling Bonds of Porous Silicon
Organic Vapors Sensor Based on Dangling Bonds of Porous Silicon

Alwan M. Alwan

Volume 25, Issue 8 , October 2007, Page 1023-1027

https://doi.org/10.30684/etj.25.8.10

Abstract
  In this paper, a porous silicon (PS) layer is investigated as a sensing materialto detect the organic vapors with low concentration. The structure of theprepared sensor consists of ...  Read More ...