introduction: the aim of this study was to evaluate the effect of proximal contour of class ii composite restorations placed with straight or contoured matrix band using composite resins with different modulus of elasticity on stress distribution by finite element method. methods: in order to evaluate the stress distribution of class ii composite restorations using finite element method, upper ...

A comparison between the vibration of fiber-metal laminate (FML) and composite cylindrical shells has been studied in this manuscript. Love’s first approximation shell theory has been applied to obtain Strain-displacement relations. In addition, beam modal function model has been used to analyze the cylindrical shell with different boundary conditions. In this manuscript, the frequencies of FML...

This paper presents an overview of manufacturing, static/dynamic test and validation work carried out on composite rail vehicle structures. Two case studies, detailing the development and experimental validation of a composite bodied people mover and a foam core composite roof for a regional train are presented, demonstrating new and novel applications of composite materials within the rail ind...

Sandwich structure composites produced by epoxy core and aluminium skin were developed as potential building materials. Interface bonding between core and skin was controlled by varying kenaf content. Five different weight percentage of kenaf loading ranging from 10 wt% to 50 wt% were employed in the core manufacturing in order to study the mechanical properties of the sandwich composite. Prope...

Abstract Aluminium Composites are presently conquering their massive practice in aerospace, marine, automobile and other industrial applications due to vital properties such as better strength, light weight etc. The main Purpose the present research is investigate role of Al 2 O 3 -MoS on Al6061 Metal Matrix (MMCs). with varying percentages reinforcements like (3, 6 9%) MoS manufactured by usin...

Friction stir welding (FSW) is employed for of aluminium metal matrix composite (MMC) reinforced with zirconium dioxide and Graphite as the reinforcing element. Stir casting used mixing MMC The specimens are fabricated in form rectangular plates then welded using FSW process. process parameters considered this work are; tool rotational speed, speed axial load. tensile strength hardness weld nug...

Continuous carbon fiber reinforced aluminum matrix composite materials (Cf/Al) contains manufacturing abnormalities such as shrinkage void, shrinkage porosity and delamination. Fundamental characteristics of the defects in Cf/Al were investigated through the correlation of radiographic image and microstructure of the composites. Hole-style penetrameter was designed and manufactured to help quan...

The coefficient of thermal expansion (CTE) is one of the most important physical properties of metal matrix composites (MMCs). The thermal expansion response is correlated to the microstructure, the deformation of the matrix, and the internal stress conditions. In the present study the physical CTE of aluminium matrix composite (AMC) reinforced with 70 vol. % SiC particles is analytically compu...

In this study, diamond turning of an aluminiumbased metal matrix composite (MMC) reinforced with SiC particles was conducted with the assistance of ultrasonic vibrations. A simple and small size vibration device was designed to mount a piezoelectric transducer and a diamond insert onto a CNC machine. Turning experiments were carried out using a factorial design to investigate the effects of vib...