Lamb Wave-Based Structural Health Monitoring on Composite Bolted Joints under Tensile Load

Materials (Basel). 2017 Jun 14;10(6):652. doi: 10.3390/ma10060652.

Abstract

Online and offline monitoring of composite bolted joints under tensile load were investigated using piezoelectric transducers. The relationships between Lamb wave signals, pre-tightening force, the applied tensile load, as well as the failure modes were investigated. Results indicated that S0/A0 wave amplitudes decrease with the increasing of load. Relationships between damage features and S0/A0 mode were built based on the finite element (FE) simulation and experimental results. The possibility of application of Lamb wave-based structure health monitoring in bolted joint-like composite structures was thus achieved.

Keywords: FE simulation; Lamb wave propagation; composite bolted joints; structural health monitoring.