Damage monitoring and locating of COPV under low velocity impact using MXene sensor array

The composite overwrapped pressure vessel (COPV) is sensitive to impact, and even small impact damage may cause serious consequences. So the structural health monitoring of COPV is incredibly crucial, and a highly sensitive sensor is urgently needed to monitor dangerous areas. In this paper, the force-electric response characteristics of MXene sensor are investigated in low velocity impact experiments, and the impact behaviors of COVP are monitored by this sensor array. The experimental results show that the MXene sensor is very sensitive to low energy impact. Moreover, the response of the near-end sensor is opposite to that of the far-end sensor. According to the combined response of sensor array, the magnitude of impact energy and the position of the impact point can be determined. In addition, the sensor can respond to the strain load generated by resonance to ensure the safety factor of COPV. In a word, the impact force and damage degree of COPV can be monitored effectively using MXene sensor array in real-time.

Automated summary

This study investigates the force-electric response characteristics of MXene sensor in low velocity impact experiments, and monitors the impact behaviors of COPV using this sensor array. The experimental results demonstrate that MXene sensor is highly sensitive to low energy impact, and the impact energy magnitude and point of impact can be determined based on the response of the sensor array. In addition, the sensor is capable of responding to strain load generated by resonance, ensuring the safety factor of COPV.