Engineered Interface Concepts with Fiber Coating

Engineered interface concepts with fiber coating 

It is shown in Section 7.2 that the PVAL coating applied onto Kevlar and carbon fibers is potentially beneficial for improving the transverse fracture toughness of the composites made therefrom. Encouraged by this promising result, further studies were conducted on the effects of the compliant interlayer on the stress distributions. 

V and a are the Young s modulus, Poisson ratio and CTE, respectively, and the subscript i refers to the interlayer or coating. The residual stress at the fiber/matrix interface, (Tai, for the composite without an interlayer can be obtained for , = 

In the light of the work presented in the foregoing from both the theoretical and experimental viewpoints, three concepts of engineered interfaces have been put forward to explain the roles of the thermoplastic coating, and their physical/ chemical requirements for three different functional coatings are proposed by Kim and Mai (1996b)  

Mechanical properties of carbon fiber-epoxy matrix composites . 

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Engineered interface concepts with fiber coating... 

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