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 Numerical Investigation of The Effect of Needling Diameter on Effective Thermal Conductivity of 3D C/C Composite A report submitted to Umm Al-Qura University for the degree of MSc in Mechanical Engineering Department

 Alamoudi, Ali


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Numerical Investigation of The Effect of Needling Diameter on Effective Thermal Conductivity of 3D C/C Composite A report submitted to Umm Al-Qura University for the degree of MSc in Mechanical Engineering Department

Alternative : Numerical Investigation of The Effect of Needling Diameter on Effective Thermal Conductivity of 3D C/C Composite A report submitted to Umm Al-Qura University for the degree of MSc in Mechanical Engineering Department
Authors : Alamoudi, Ali
Call Number : 24139
Publisher :جامعة أم القرى
Pub Place : مكة المكرمة
Issue Date : 2020 - 1441 H
Description : 49 ورقة.
Format : ماجستير
Language : E
Is format of : مكتبة الملك عبدالله بن عبدالعزيز الجامعية

Carbon-Carbon composite are considered as a ceramic matrix composite. Two-dimensional C/C composite have low inter-laminar strength and low through thickness thermal conductivity. Needle-punching process enhances the properties in through-thickness direction. The needling process has a direct effect on thermal properties and porosity distribution in the composite. In this study, the effect of needling diameter on the effective thermal conductivity of the C/C composite was determined through multiscale finite element modeling. The structure of a 3D needled C/C composite was examined using Scanning Electron Microscopy and X-ray Tomography. Thermal conductivity and thermal diffusivity ware measured in the longitudinal and through-thickness directions using the Laser Flash Test. It was found that the through-thickness thermal conductivity of the composites increased with increasing needling diameter. The longitudinal thermal conductivity of the composite decreased with the increase in needling diameter. Whereas the through-the-thickness thermal conductivity of the composite increased with increasing needling diameter.

Title: Numerical Investigation of The Effect of Needling Diameter on Effective Thermal Conductivity of 3D C/C Composite A report submitted to Umm Al-Qura University for the degree of MSc in Mechanical Engineering Department
Other Titles: Numerical Investigation of The Effect of Needling Diameter on Effective Thermal Conductivity of 3D C/C Composite A report submitted to Umm Al-Qura University for the degree of MSc in Mechanical Engineering Department
Authors: . Alghamdi, Abdulrahman
Alamoudi, Ali
Subjects :: Mechanical engineering
Issue Date :: 2020
Publisher :: جامعة أم القرى
Abstract: Carbon-Carbon composite are considered as a ceramic matrix composite. Two-dimensional C/C composite have low inter-laminar strength and low through thickness thermal conductivity. Needle-punching process enhances the properties in through-thickness direction. The needling process has a direct effect on thermal properties and porosity distribution in the composite. In this study, the effect of needling diameter on the effective thermal conductivity of the C/C composite was determined through multiscale finite element modeling. The structure of a 3D needled C/C composite was examined using Scanning Electron Microscopy and X-ray Tomography. Thermal conductivity and thermal diffusivity ware measured in the longitudinal and through-thickness directions using the Laser Flash Test. It was found that the through-thickness thermal conductivity of the composites increased with increasing needling diameter. The longitudinal thermal conductivity of the composite decreased with the increase in needling diameter. Whereas the through-the-thickness thermal conductivity of the composite increased with increasing needling diameter.
Description :: 49 ورقة.
URI: http://dorar.uqu.edu.sa//uquui/handle/20.500.12248/130755
Appears in Collections :الرسائل العلمية المحدثة

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