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Studies on fibre spray-up with oriented carbon fibres for high volume production of automotive composite-components

Borchert, Benedikt (2016) MMK820 20121
Product Development
Abstract
Due to their outstanding mechanical properties, fibre reinforced materials allow a
substantial reduction of mass for modern vehicles, thus making energy-efficient
mobility viable. However, the cost for material and manufacturing of parts made out
of carbon exceed the allowable costs for a broad market. New preforming
technologies offer a potential to manufacture composite parts in a highly automated
fashion with short cycle times, consequently reducing costs to a reasonable level. In
direct fibre performing, as one of these manufacturing methods, chopped fibres are
deposited on a tool and subsequently consolidated to a preform, which can be
processed further by a liquid resin infusion process.
This Master thesis introduces a... (More)
Due to their outstanding mechanical properties, fibre reinforced materials allow a
substantial reduction of mass for modern vehicles, thus making energy-efficient
mobility viable. However, the cost for material and manufacturing of parts made out
of carbon exceed the allowable costs for a broad market. New preforming
technologies offer a potential to manufacture composite parts in a highly automated
fashion with short cycle times, consequently reducing costs to a reasonable level. In
direct fibre performing, as one of these manufacturing methods, chopped fibres are
deposited on a tool and subsequently consolidated to a preform, which can be
processed further by a liquid resin infusion process.
This Master thesis introduces a concept for manipulating carbon fibres into
predefined orientations. Methods for achieving that bias are presented, as well as
requirements to such methods. Furthermore the analysis, selection and experimental
verification of such methods are described.
Experimental studies show the feasibility of obtaining predefined fibre orientations
under the influence of electrical fields. The achievable fibre orientation is increasing
with field intensity and fibre length and tapers with bundle size. However, the desired
degree of fibre orientation has not been accomplished yet with the current test
equipment.
Following the experimental verification a comparison to the known method of
mechanical fibre alignment is drawn pointing out possibilities and challenges for
future developments. (Less)
Please use this url to cite or link to this publication:
author
Borchert, Benedikt
supervisor
organization
course
MMK820 20121
year
type
H2 - Master's Degree (Two Years)
subject
language
English
id
9004928
date added to LUP
2020-02-12 15:00:10
date last changed
2020-02-12 15:00:10
@misc{9004928,
  abstract     = {Due to their outstanding mechanical properties, fibre reinforced materials allow a
substantial reduction of mass for modern vehicles, thus making energy-efficient
mobility viable. However, the cost for material and manufacturing of parts made out
of carbon exceed the allowable costs for a broad market. New preforming
technologies offer a potential to manufacture composite parts in a highly automated
fashion with short cycle times, consequently reducing costs to a reasonable level. In
direct fibre performing, as one of these manufacturing methods, chopped fibres are
deposited on a tool and subsequently consolidated to a preform, which can be
processed further by a liquid resin infusion process.
This Master thesis introduces a concept for manipulating carbon fibres into
predefined orientations. Methods for achieving that bias are presented, as well as
requirements to such methods. Furthermore the analysis, selection and experimental
verification of such methods are described.
Experimental studies show the feasibility of obtaining predefined fibre orientations
under the influence of electrical fields. The achievable fibre orientation is increasing
with field intensity and fibre length and tapers with bundle size. However, the desired
degree of fibre orientation has not been accomplished yet with the current test
equipment.
Following the experimental verification a comparison to the known method of
mechanical fibre alignment is drawn pointing out possibilities and challenges for
future developments.},
  author       = {Borchert, Benedikt},
  language     = {eng},
  note         = {Student Paper},
  title        = {Studies on fibre spray-up with oriented carbon fibres for high volume production of automotive composite-components},
  year         = {2016},
}