Meaning
Real-time monitoring technology in composite materials fabrication tracks the internal conditions of structural parts during the curing cycle. The in-situ fiber telemetry uses embedded fiber-optic sensors to measure strain, temperature, and resin flow within the laminate layers while the part is inside the autoclave. This monitoring ceases once the curing process is complete and the part is removed from the mold.
Process Optimization
Temperature profiles inside the mold must be managed to prevent localized overheating and uneven curing. With in-situ fiber telemetry, engineers can adjust the autoclave heat in response to direct readings from inside the laminate. This active control reduces the cycle time and prevents the formation of internal thermal stresses.
Defect Prevention
Resin flow and consolidation must be monitored to ensure there are no dry spots or air pockets left in the part. When the in-situ fiber telemetry detects incomplete wet-out, the process pressure can be increased to force the resin into the dry fibers. This adjustment prevents the formation of voids that would weaken the structure.
Structural Validation
Post-cure data provide a permanent record of the part’s manufacturing history to prove compliance with design specifications. This continuous tracking eliminates the need for expensive destructive testing on finished aerospace components.
