The problem of the selecting optimal lay-up stacking polymer composite materials for load-bearing elements rear part fuselage structure is considered. comparison two approaches to design carried out. first them use multilayered material elements, angles which selected from a given discrete set, and second with continuous range variables in fabric angles. As result optimization, it shown that us...

Since this project is a result of a class assignment, it has been graded and accepted as fulfillment of the course requirements. Acceptance does not imply technical accuracy or reliability. Any use of the information in this report, including numerical data, is done at the risk of the user. These risks may include catastrophic failure of the device or infringement of patent or copyright laws. T...

Conventional materials are being replaced in the field of engineering by composite materials, due to their tailorable properties and high specific properties. These materials are extensively used in structural applications. Damping is one of the important properties of the materials used in structures, and needs to be enhanced in order to reduce structural vibrations. In the present work, the i...

Carbon nanotubes (CNTs) have attracted a great deal of interest in the development of high-performance engineering composites, due to their exceptional physical, mechanical, electronic and thermal properties. Incorporation of CNTs into polymer has shown great improvements in the functional property, however, the enhancement of the mechanical property was insignificant compared with that of micr...

The purpose of this study was to investigate the radiation attenuation effect due reflection and refraction that occurs when passes through composite material simulation. gamma-ray shielding ability composites with different structures, such as layered composite, fibrous particle-added composites, compared. For regardless thickness, structure could not be seen. simulated coefficient found than ...

An activated carbon fiber nonwoven (ACF) was manufactured from a cotton nonwoven fabric. For the ACF acoustic application, a nonwoven composite of ACF with cotton nonwoven as a base layer was developed. Also produced were the composites of the cotton nonwoven base layer with a layer of glassfiber nonwoven, and the cotton nonwoven base layer with a layer of cotton fiber nonwoven. Their noise abs...

During recent years, the fabrics made from different yarns have been used for industrial purposes such as composite materials. Given the importance of the shear properties of these fabrics, a mechanical model based on the Grosberg and Park's Model for hybrid plain-woven fabrics is proposed. In this model, using the Energy method, the initial load-shear angle behavior of hybrid fabrics is calcul...

The design space of fabric multitouch surface interaction is explored with emphasis on novel materials and construction techniques aimed towards reliable, repairable pressure sensing surfaces for musical applications.