Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Drilling in natural fiber composites with polyurethane derived from castor oil
Submission Author:
Alessandro Ellenberger , PR
Co-Authors:
Alessandro Ellenberger, Milton Polli
Presenter: Alessandro Ellenberger
doi://10.26678/ABCM.COBEM2019.COB2019-0384
Abstract
Composites made from natural fibers from waste crop or manufacturing processes appear as an alternative to non-renewable raw materials. The polyurethane derived from castor oil is a renewable and biodegradable material that can be used as matrix to obtain these composites used by industries such as furniture or civil construction. Machining operations, including drilling, are necessary to enable the assembly of parts of the product. This work investigated the drilling process in three different types of composites, one with eucalyptus sawdust, one with pine nut shells and one with banana stem fibers, all with PU matrix derived from castor oil. Different drilling parameters were used and the hole quality obtained was verified by microscopy. Initial results showed better results at higher spindle speed. The composites with smaller particle size and mechanically mixed presented better hole quality.
Keywords
Composites, natural fibers, Drilling, hole quality
