Document Details

Document Type : Thesis 
Document Title :
EFFECT OF NANOCOMPOSITE COATING ON THE FATIGUE STRENGTH OF STAINLESS STEEL 316
تأثير تكسية السطح بمركب مواد متناهية الصغر على جهد الكلال في مادة الستانلس ستيل316
 
Subject : Faculty of Engineering 
Document Language : Arabic 
Abstract : Fatigue of material is a very important phenomenon that must be considered when designing mechanical systems. Surface roughness has a great effect on fatigue properties. It is found that fatigue fracture starts from a crack in the material surface (crack initiation) then under cyclic loading the crack propagated (crack propagation) and material fractured. In fatigue test, the number of cycles at which tested material fractures at a certain load is called fatigue life at that load and that load is called fatigue strength of the material at that number of cycles. Many experimental researches succeeded to improve fatigue properties of materials by treating their surfaces and decreasing cracks effects. Treating improves material resistance to fracture and so fatigue properties. Researchers found that adding Multi Wall Carbon Nano Tubes (MWCNT) to epoxy resin produces a much stronger composite (Nanocomposite). This study is getting the benefits of nanocomposite coating material to investigate fatigue life of stainless steel 316 specimens with four different surface roughnesses. Nanocomposite coating was prepared with different concentrations of multi wall carbon nano tubes (MWCNT). This coating was applied on stainless steel test specimens with different roughness. Coated specimens have different improvement in fatigue properties. It is showing that fatigue life improved more than four times at load 0.75σy when using 0.5%wt and 0.7%wt MWCNT concentration with the finest roughness. While more rough specimens improved with less percentage. 
Supervisor : Prof. Dr. Hassan Hedia 
Thesis Type : Master Thesis 
Publishing Year : 1432 AH
2011 AD 
Co-Supervisor : Prof. Dr. Ahmed Khairy AbdEllatif . Dr. Saad M. R. Al Dosary 
Added Date : Monday, July 4, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
رائد حسن قاضيGadhi, Raed HasanResearcherMaster 

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