Transducer placement optimisation scheme for a delay and sum damage detection algorithm

M. S. Salmanpour, Z. Sharif Khodaei, M. H. Aliabadi
2016 Structural Control and Health Monitoring: The Bulletin of ACS  
In this work, a transducer placement scheme based on wave propagation is proposed, which enhances damage localisation. The method was tailored to seek an optimal transducer network placement for a delay and sum damage detection algorithm. The proposed method determines a coverage index map and utilises a genetic algorithm to determine an optimal transducer network. It can also minimise the impact of faulty transducers, incorporate the effect of stiffeners and different damage types. The method
more » ... types. The method is initially verified using numerically simulated signals. The optimal network outperformed the suboptimal for detection of holes and debonding in a stiffened panel. It is also shown that the coverage index reflected the localisation accuracy. The method is then validated with experimental results and the generated optimal transducer network compared with a suboptimal arrangement. The optimal network is shown to locate an actual crack with significantly higher accuracy than the suboptimal arrangement.
doi:10.1002/stc.1898 fatcat:hh46kgsoy5gz5oer33w7zqmb6i