JEC COMPOSITES MAGAZINE - Issue #89 - May 2014 - 49
Fig. 2: The hull and the meshed model
output vent (placed on the upper edge). This first simulation is useful to better underline the areas where filling
problems are likely to occur and to predict the volumetric
percentage of fibres, the final thickness and the compaction of the laminate in each zone. The total filling of the
hull was achieved in 4 hours, and it took an hour and a half
to fill 60% of the component.
To reduce the filling time significantly, additional channels can be introduced in the infusion network. In fact,
introducing runners is a technique commonly used in the
infusion process since a high number of infusion channels
can reduce the filling time. So a configuration with 12
runners was analysed. These high-permeability channels
ranged from the bottom of the hull to the upper edge of
the topside, while the length of the runner was reduced on
the stern to avoid filling it in a reduced time. Numerical
results, such as the fibre content and the laminate thickness, are shown in Figure 3. In this new configuration,
thickness uniformity was maintained, but the filling time
was decreased by 25%.
Fig. 3: Numerical results for the configuration with 12 runners
Fig. 4.multi-step infusion configuration
Tab.1: Hull dimensions
Total length
18.24 m
Side area
80 m²
Total width
4.92 m
Bottom area
66 m²
Total surface
155 m²
Stern area
9 m²
Tab.2: Material data
Fabric
properties
1000 kg/m3
Viscosity
0.15 mPa
Volumetric density
Resin properties
R.912 VE
Density
2540 kg/m3
Permeability (k1=k2)
Compressibility
Surface density
500 g/m2
Natural thickness
0.0045 m
Fig. 5: Numerical results for multi-step configuration
To improve the filling time, another configuration was
studied, adding a second supply gate to obtain a multi-step
infusion process. The additional supply line was located
along the curvature between the bottom and the side of the
hull, and sensors were used to close and open the supply
lines as required - the first sensor closing the first supply
line, the second sensor opening the second supply line
and the third sensor closing the second supply line. With
this configuration, all the excess resin could overflow and
uniformity was improved in terms of fibre content and
thickness. Figure 4 illustrates this configuration, where
No89 May 2014 /
jec composites magazine 49
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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