Advanced Materials International Forum, Bari 18-19 settembre, conferenza internazionale dedicata ai materiali avanzati e alle loro possibili applicazioni nei settori industriali, con un focus particolare sui trasporti (aerospazio, automotive, navale e cantieristico).

1. Cost Efficient Processes
for high performance
composite structures
Riccardo Gennaro

2. Since 2003 CETMA develops innovative solution for marine applications:
• recyclable materials
• renewable materials (bio-based resin and natural fibres)
• innovative manufacturing process
2
Alessia – First recyclable thermoplastic boat
•Material:PP reinforced with continuous glass fibres
•Process: vacuum bagging - Length: 4.78m

3. Materials: pre-preg for high performances composites
3
3
•high cost 
•low volume production 

4. Innovative processes developed by CETMA
Thermal Expansion Cores for OoA (Out-of-Autoclave) processing of pre-preg
materials
Development and optimization of cost efficient out-of-autoclave manufacturing
processes for prepregs.
Consolidation pressure on the pre-preg is achieved using the different
coefficients of thermal expansion of mould materials
TOOL
PRE-PREG
SILICON RUBBER
TEMPERATURE
p

5. Thermal Expansion Cores
for OoA processing of pre-preg materials
CARBON TUBE by CETMA
Coefficients of Linear Thermal Expansion
• steel ~ 1.2x10-5 (k-1)
•aluminium ~ 2.3x10-5 (k-1)
•silicone rubber ~ 7.7x10-5 (k-1)

6. Thermal Expansion Cores
for OoA processing of pre-preg materials
Alluminium
Steel
0 100 200 300 400 500 600 700
0
-1x105
-2x105
-3x105
-4x105
-5x105
-6x105
-7x105
-8x105
-9x105
-1x106
Pressure [MPa]
Time [s]
Process Simulation by FEM
comparable pressure with AUTOCLAVE process

7. Low cost processes developed by CETMA
High performance components by CETMA

8. Thermal Expansion Cores
for OoA processing of pre-preg materials
different geometries complex shape variable section closed geometries

9. Low cost processing of pre-preg materials
Advantages of thermal expansion processing
•Complex components
• Net shape components
•High mechanical properties
•Wieght reduction
•Low cost process
•Fast process

10. Low cost processing of pre-preg materials
Components for sailing boat
Mast
Rudder
Steering
Wheels
Batten
Tiller
boom

11. Bando AIUTI A SOSTEGNO DEI CLUSTER
TECNOLOGICI REGIONALI PER L’INNOVAZIONE
CETMA supports companies in the following phases::
Technical coordination in the preparation of the proposal
Identification of partners
Support for technical activities during the project
Support for management activities during the project
for more details and sharing of the project:
Ing. Alessandro Marseglia – alessandro.marseglia@cetma.it
tel- 0831 440408 - 333 2620456