This study investigated the strain and damage self-sensing capabilities of basalt fiber reinforced polymer (BFRP) laminates fabricated with carbon nanofibers (CNFs)/epoxy composites subjected to tensile loadings. The conduction mechanisms based on the tunnel conduction and percolation conduction theories as well as the damage evolution were also explored. A compensation circuit with a half-bridge configuration was proposed. The results indicated the resistivity of the CNFs/BFRP laminates and CNFs/epoxy composites exhibited similar change rule, indicating that the conductive networks of CNFs/BFRP laminates were governed by CNFs/epoxy composites. With the increase of strain under monotonic tensile loading, the electrical resistance response could be classified into three stages corresponding to different damage modes. This confirmed CNFs/BFRP laminates have excellent self-sensing abilities to monitor their internal damages. Moreover, stable and repeatable strain self-sensing capacity of the CNFs/BFRP laminates was verified under cyclic tensile loading because the electrical resistance varied synchronously with the applied strain.

这项研究调查了由碳纳米纤维（CNFs）/环氧复合材料制成的玄武岩纤维增强聚合物（BFRP）层压板在拉伸载荷下的应变和损伤自感知能力。还研究了基于隧道传导和渗流传导理论的传导机制以及损伤演化。提出了一种具有半桥配置的补偿电路。结果表明，CNFs / BFRP层压板的电阻率和CNFs /环氧复合材料的电阻率变化规律相似，表明CNFs / BFRP层压板的导电网络受CNFs /环氧复合材料支配。随着单调拉伸载荷下应变的增加，电阻响应可分为对应于不同损伤模式的三个阶段。这证实了CNF / BFRP层压板具有出色的自感应能力，可以监控其内部损坏。此外，由于电阻与施加的应变同步变化，因此在循环拉伸载荷下，CNF / BFRP层压板具有稳定且可重复的应变自感应能力。