Ayad Ramadhan

Ayad Ramadhan
Northern Technical University · Mechanical Department

Doctor of Engineering

About

18
Publications
25,354
Reads
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256
Citations
Additional affiliations
November 2014 - August 2015
Independent Researcher
Independent Researcher
Position
  • Head of Department
December 2009 - September 2012
Universiti Putra Malaysia
Position
  • PhD
September 2001 - March 2004
Nahrain University
Position
  • Master's Student
Education
December 2009 - September 2012
Universiti Putra Malaysia
Field of study
  • Aerospace Engineering

Publications

Publications (18)
Article
Full-text available
This paper presented the effect of bending on multi-layer of hollow columns of Hybrid materials (Carbon-Glass /epoxy-Alumina) composite this effect occurred and volume fraction of fibers. An experimental procedure was developed to study the performance of these effects under bending load using a hydraulic bending device type (MATEST. SRL) testing m...
Article
The possibility of benefiting from the use of wind in electricity production is increasing as the wind turbine towers are rising above ground level, the towers are an important part of the wind turbines because the part of the generation and the fan is based on it.This paper deals with a theoretical study the possibility of using composite material...
Article
Full-text available
In this paper, the effect of the cooling medium on the strength of torsion and hardness is discussed. The specimen used in this study is of medium carbon steel grade. The carbon percentage was determined as 0.55% C through the Arl spectroscopy instrument. The specimen dimension is 6 mm in diameter, gauge length is 76 mm and the total length is 144...
Article
Abstract--- The possibility of benefiting from the use of wind in electricity production is increasing as the wind turbine towers are rising above ground level, the towers are an important part of the wind turbines because the part of the generation and the fan is based on it.This paper deals with a theoretical study the possibility of using com...
Conference Paper
Full-text available
The experimental study of composite materials overlapped cylinders made of a composite fiber glass / epoxy-alumina with thin wall cylinders under the influence of internal pressure loads have been tested and the study of its performance. All of these samples have been tested performance using a device for this purpose. A device of a hydraulic pump...
Article
Full-text available
This paper has presented an experimental study of quasi-static compressive and tensile loading of cutout hole on multi-layer of Kevlar-29/epoxy-Al 2 O 3 laminated composite. The experimental procedure has been developed to study the performance of (50%, 55% and 60%) volume fraction (vf) and (0 o /90 o and +45 o /-45 o) fiber orientation angle effec...
Article
Full-text available
An experimental study of Kevlar-29/epoxy composite thin wall cylinders under internal pressure loading has been investigated in this work. Kevlar/epoxy composite specimens have been fabricated and tested. All of these specimens were tested by using the hydraulic pump and it were subjected to a uniformed internal pressure loading. The results that w...
Article
Full-text available
The high velocity impact response of composite laminated plates has been experimentally investigated using a nitrogen gas gun. Tests were undertaken on sandwich structures based on Kevlar-29 fiber/epoxy resin with different stacking sequence of 6061-T6 Al plates. Impact testing was conducted using cylindrical shape of 7.62 mm diameter steel project...
Article
Full-text available
This paper presented the effect of cutout hole on multi layer of Kevlar-29/epoxy composite laminated plates this effect occurred and fiber orientation angle. An experimental procedure was developed to study the performance of these effects under quasi-static compressive and tensile load using a servo-hydraulic testing machine. The work involved inv...
Article
Full-text available
The high velocity impact response of composite laminated plates has been experimentally investigated using a nitrogen gas gun. Tests were undertaken on fibre-metal laminate (FML) structures based on Kevlar-29 fiber/epoxy-Alumina resin with different stacking sequences of 6061-T6 Al plates. Impact testing was conducted using a cylindrical shape of 7...
Article
Full-text available
An experimental investigation of high velocity impact responses of composite laminated plates using a helium gas gun has been presented in this paper. The aim of this study was to develop the novel composite structure that meets the specific requirements of ballistic resistance which used for body protections, vehicles and other applications. Thus...
Thesis
Full-text available
Enhancement of the influence of epoxy resin by adding 10% Alumina powder (Al2O3) in the mixture to obtain good mechanical properties of tensile and compression strength has been investigated in this research. The effect of fiber orientation (0o/90o and +45o/-45o) on the composites (kevlar-29/epoxy and kevlar-29/epoxy-Al2O3) and different (45, 50, 5...
Article
Full-text available
An experimental investigation of high velocity impact responses of composite laminated plates using a helium single stage gas gun has been presented in this paper. The aim of this study was to develop the novel composite structure that meets the specific requirements of ballistic resistance which used for body protections, vehicles and other applic...
Conference Paper
This paper presents the results of the energy absorbed due to impact of small rigid projectile on composite materials targets. The energy absorbed due to impact of conical nose projectiles on composite Kevlar-129/Polyester laminates are investigated analytically. The impact on Kevlar-129/Polyester thin plate laminate has been subjected to high velo...
Article
Full-text available
This paper presents the results of the energy absorbed due to impact of 7.62mm steel bullet on composite materials targets. The energy absorbed due to impact of conical nose projectiles on composite Kevlar-29/Polyester laminates are investigated experimentally. The impact on Kevlar 29/Polyester thin plate laminated has been subjected to a high velo...

Questions

Questions (2)
Question
I need more details about this item to study the stress concentration.
Question
Please, is there any body interested in composite materials who can give me the optimum value of volume fraction of Al2O3/epoxy?
I want to do specimens from this mixing.

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