The goal of the SEHRKALT collaborative project is to develop, integrate, and validate cryogenically compatible fiber Bragg grating (FBG) sensors for monitoring CFRP cryogenic tanks for liquid hydrogen. The sensors are designed to enable high-precision temperature and strain measurements in the temperature range from 20 K to 120 K and to be permanently integrated into CFRP structures. In addition to sensor design, suitable integration and connection concepts are being developed, and guidelines for the evaluation and cryo-aging of fiber-optic sensor systems are being formulated. In this way, SEHRKALT lays the foundation for a reliable SHM system for LH₂ tanks and supports the introduction of hydrogen-based propulsion technologies in aviation. More…
