Dynamic Behaviour of Cast A356/Al2O3 Aluminum Metal Matrix Nanocomposites

El-Kady, El-Sayed Youssef and Mahmoud, Tamer Samir and El-Betar, Ahmed Abdel-Fattah and Sayed, Mohamed Abdel-Aziz (2012) Dynamic Behaviour of Cast A356/Al2O3 Aluminum Metal Matrix Nanocomposites. Materials Sciences and Applications, 3. pp. 815-820. ISSN 815-820

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Official URL: http://www.SciRP.org/journal/msa)

Abstract

The present work includes the study of the dynamic properties of the nanocomposites specimens. The dynamic proper-ties of A356/Al2O3 nanocomposites were investigated through different fabrication conditions. The A356/Al2O3 nano-composites specimens were fabricated using a combination between the rheocasting and squeeze casting routes. The composites were reinforced with Al2O3 particulates of 60 and 200 nm and different volume fractions up to 5 vol%. The dynamic properties of the A356/Al2O3 nanocomposites were investigated through measuring the dynamic properties of specimens. Free vibration method is used to measure frequency response (fn), and damping factor (ξ). The viscoelastic properties such as loss factor η, storage modulus (E'), and loss modulus (E") were obtained. The results concluded that, the dynamic properties of nanocomposites were improved by increasing the volume fractions of nanoparticulates and decreasing the nanoparticulates size. The results indicated also that, the damping factor, and the related parameters (η, E' and E") was strongly affected by increasing both volume fraction and the particulates.

Item Type: Article
Subjects: Mechanical Engineering
Divisions: College Of Engineering > Mechanical Engineering
Depositing User: MOHAMED SALIM
Date Deposited: 20 Aug 2017 10:58
Last Modified: 20 Aug 2017 10:58
URI: http://eprints.kku.edu.sa/id/eprint/1015

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