JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 62

tow placement

Fig. 2: Manufacture of load-optimized FRP components using tape and fibre placement

plastic tapes and thermoset prepregs,
where the emission coefficient depends
on angle and temperature [KOE08], the
emission coefficient of dry fibres covered
with adhesive tends to be less dependent on temperature (ranging from room
temperature to process temperature) and
angle due to the absence of matrix material. Tape and fibre placement systems
have to be developed with respect to
these different material properties.
Table 1 summarizes the properties of
thermoplastic tape, thermoset prepregs
and dry fibre rovings covered with
adhesive.
The machinery hardware and the process
itself require adaptation to the different
raw material properties and process parameters. Especially, the material storage,
guiding and cutting units, the process
temperature measurement system and
heat source, the consolidation roller and
the tape or fibre placement process have
to fulfil different requirements. For example, the material storage and guiding
units need to be cooled to prevent tack
of thermoset prepregs, while this is not
necessary for thermoplastic tapes.
Besides system development, Fraunhofer IPT also implements production

processes in the framework of research
activities. For process development and
steering of repetitive actions, all relevant
process parameters (temperature, consolidation pressure, tape tension, laser
power, laser angle, etc.) are recorded
over time.
Figure 2 summarizes the manufacture of
load-optimized FRP components using
tape and prepreg placement and FRP
preforming using dry fibre placement
with the Multi-Material-Head developed
by Fraunhofer IPT.

A modular tape and fibre placement system
The Multi-Material-Head
is a laser-assisted fibre and
tape placement system
which can be added as
an end effector to industrial jointed-arm and linear
gantry robots in variable
manufacturing cells. It can
handle and process thermoplastic tapes, thermoset
prepregs and dry fibre rovings covered with adhesive
(Figure 3).
As it processes three
fibre-reinforced materials
in a single tape and fibre

62 jec composites magazine / No89 May 2014

placement system, the
Multi-Material-Head
combines three technologies (thermoplastic tape placement and
winding, thermoset
prepreg placement,
dry fibre placement)
within a single functional unit.
In addition, the
known advantages of
laser-assisted thermoplastic tape placement
(precise and swift
temperature control,
high lay-up rates, high
opto-electrical energy
efficiency of diode
laser sources, local
thermal energy) are
available for thermoset prepreg and dry
fibre placement too. The precise temperature control enables in-situ consolidation (out-of-autoclave process) while
processing thermoplastic tapes.
A modular design and a modular software architecture are essential for an
all-in-one laser-assisted thermoplastic
tape, thermoset prepreg and dry-fibre
placement unit. In contrast to existing
systems, the Multi-Material-Head can
be extended and modified easily due to
its modular assembly, so that SMEs can
handle different types of commonly used

Fig. 3: The Multi-Material-Head developed by Fraunhofer IPT



JEC COMPOSITES MAGAZINE - Issue #89 - May 2014

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #89 - May 2014

Cover
Edito
Point of view: volume production
Contents
COMPANY & BUSINESS In Brief
MEA
Agenda of Events
APPLICATIONS
Race car
E-helicopter
Pipes
Consumer goods
MARKET
Brazil
U.S.
WPC
FEATURE AERONAUTICS
Integration
CMC
Prepregs
CAE
Design
Equipment
Structure
Interview
RESEARCH & DEVELOPMENT
Infusion
Process
TECHNOLOGY & INNOVATIONS
Automotive
Tow placement
Core materials
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Cover
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 2
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Edito
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Point of view: volume production
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 5
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Contents
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 7
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - COMPANY & BUSINESS In Brief
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - MEA
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 11
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Ad1
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Ad2
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Race car
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 13
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 14
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - E-helicopter
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Pipes
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 17
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Consumer goods
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 19
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Brazil
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 21
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - U.S.
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - WPC
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 24
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 25
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 26
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Integration
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 28
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - CMC
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 30
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 31
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Prepregs
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 33
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 34
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - CAE
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 36
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Design
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 38
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 39
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Equipment
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 41
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Structure
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 43
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Interview
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 45
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 46
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Infusion
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 48
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 49
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 50
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Process
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 52
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 53
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Automotive
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 55
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 56
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 57
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 58
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 59
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Tow placement
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 61
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 62
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Core materials
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 64
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - Index
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - In the world
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 67
JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 68
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