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Thermochemical numerical analysis of the manufacturing process of a composite ship propeller

This study focuses on thermochemical simulation and validation of a composite ship propeller manufacturing process. The aim is to analyze nodal temperatures and degree of cure using SAMCEF Mecano software. The model includes input data such as curing cycle profiles and thermophysical properties. Two case studies cover different curing cycles and infusion molding. Validation methods involve comparing simulated and measured values. Conclusions highlight the importance of simulation in designing manufacturing strategies.

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Thermochemical numerical analysis of the manufacturing process of a composite ship propeller

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  1. Thermochemical numerical analysis of the manufacturing process of a composite ship propeller Sònia del Toro Muñoz Coordinator: Dr. Christian Brauner

  2. SUMMARY 1. AIMS2. SIMULATION SOFTWARE3. MODEL DESCRIPTION4. INPUT DATA5. FIRST CASE OF STUDY 5.1. Low cycle curing 5.2. Medium cycle curing 5.3. High cycle curing6. SECOND CASE OF STUDY 6.4. Real cycle 6.5. Degree of cure7. VALIDATION OF SIMULATION8. CONCLUSION

  3. AIMS 1 SIMULATION . Perform a thermo-chemical simulation in a simplified CAD geometry and obtain the nodal temperatures. Simulate the degree of cure of composite. 2 VALIDATION OF THE SIMULATION Compare the simulated values with the measured ones in order to validate the model.

  4. SIMULATION SOFTWARE SAMCEF Mecano • Finiteelementmodellingpackage • Domain: Thermal-Analysis • Nodal temperature • Degre of cure of composite • Thermo-chemicalpropertiesof composite • Tg

  5. MODEL DESCRIPTION

  6. INPUT DATA • Initial temperature 23ºC • Surface flux convective flux 14 W/m2k • Curing cycle temperature profile • Thermophysical properties

  7. FIRST CASE OF STUDY

  8. LOW TEMPERATURE CURE CYCLE

  9. LOW TEMPERATURE CURE CYCLE

  10. MEDIUM TEMPERATURE CURE CYCLE

  11. MEDIUM TEMPERATURE CURE CYCLE

  12. HIGH TEMPERATURE CURE CYCLE

  13. HIGH TEMPERATURE CURE CYCLE

  14. SECOND CASE OF STUDY

  15. VACUUM INFUSION MOULDING

  16. REAL CYCLE TEMPERATURE Real profile of temperaturewasmeasuredwiththermocouples placed in different positions of theblade.

  17. REAL CYCLE TEMPERATURE

  18. REAL CYCLE TEMPERATURE

  19. DEGREE OF CURE

  20. DEGREE OF CURE

  21. VALIDATION OF THE SIMULATIONS

  22. VALIDATION OF THE SIMULATIONS • Electrical resistance-based measurements and RTD temperature sensing • Extract real-time information of resin’s state: viscosity, Tg, degree of cure • The viscosity is directly related to electrical resistance OPTIMOLD

  23. VALIDATION OF THE SIMULATIONS

  24. VALIDATION OF THE SIMULATIONS

  25. CONCLUSIONS • Final statement: • “Simulation is a useful tool in the composite manufacturing to design intellingent strategies of manufacturing”

  26. QUESTION TIME Thank you very much for your attention.

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