engleski

Parametres for defining quality of the production process of composite materials

In many branches of machinery production elements made out of composite materials are used. Their usage depends on posibilites for production of parts with specified qualitiy. Considering composite elements structure, it makes them unacceptable for quality defining parametres, Ra, Rz, Rmax. Openings fabrication in elements made out of composite materials, such as “KELVAR” iz very difficult. Errors that appear during fabrication differ from another, so parametres for defining quality of a fabricated opening are different, compared to construction steels production. Two additional parametres for quality grading are suggested: K=v0/vu for parametre of fiber fluffing, and l=ld/Lu, for fiber delamination. This paper shows the results of openings fabrication research, and defines parametres k and l.

composite materials; holes (openings) making (fabrication); fiber fluffing; fiber delamination

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