Temperature and strain monitor of COPV by buckypaper and MXene sensor combined flexible printed circuit

Pressure vessels are always under different hazards such as leaking, fracturing, and unknown deformation. In this work, the novel micro-nano sensors were introduced based on flexible printed circuit (FPC). The temperature cycling and hydraulic pressure cycling experiments were carried out. This kind of combined sensor can be embedded and arranged between inner tank and fiber layer without any defect. The experimental results show the new sensor can detect not only thermal strain, but also elastic deformation and plastic deformation caused by pressure. Also can reflect the yield limit of COPV, which can ensure the safety of manufacture.