Expert Lecture Spotlight | Prof. Nobuo Takeda
Fiber-Optic-Based In-Process Monitoring of CFRP Structures for Material Quality Assurance
As demand grows for low-cost, high-rate CFRP production in next-generation single-aisle commercial aircraft, the pressure is on to match—or outperform—lightweight metals. The key differentiator? Reliable, real-time quality assurance.
In this lecture, Prof. Nobuo Takeda presents a pioneering approach:
Embedded fiber-optic sensors for in-process monitoring of CFRP manufacturing.
Conventional material characterization techniques fall short in capturing critical property changes during cure. Takeda’s team has developed a methodology using Fiber Bragg Grating (FBG) sensors to extract real-time internal strain and stiffness data—providing the missing link for high-fidelity process simulations.
Key Research Highlights:
- Integrated Cure Simulation
→ FBG sensors capture composite shrinkage strain and stiffness evolution during cure, directly feeding simulation models for improved predictive accuracy.
2.
Ref: Minakuchi et al., Composites Part A (2016)* - Strain and Distortion in Curved Composites
→ L-shaped CFRP parts reveal the transition from shear- to bending-dominated deformation during cure, emphasizing the need for geometry-aware monitoring.
4. Ref: Takagaki et al., Composites Part A (2017)* - Failure in Composite T-Joints
→ Cure-induced strain patterns in deltoid regions correlate with distinct failure modes. A failure index is developed from combined experimental and FEA results.
6. Ref: Hisada et al., Composites Part A (2021)*
Ref: Minakuchi et al., Composites Part A (2016)*By integrating embedded sensing with modeling, this approach eliminates costly trial-and-error during development and unlocks data-driven quality assurance for high-throughput composite manufacturing.
Watch the full lecture on the cdmHUB YouTube channel as part of the Global Composites Expert Webinar Series.
