Multi Parameter SHM System for Damage Detection in Real Scale Composite Wing for Next Generation Green Regional Aircraft

Abstract

This paper presents the validation of a multi-parameter and multi-fidelity structural health monitoring-methodology based on guided waves. An accurate design is carried out to define a comprehensive system capable of identify impact loads and characterize the consequent damage in complex aerostructures. The design is based on several technologies to offer multi-level diagnosis. In addition, different excitation and sensing techniques are applied using transducers deployed all over the structure. The conceived appoach is applied on a 9m long composite wing box for next generation regional aircraft, with the main aim of detecting barely visible impact damage via integrated sensors data. Both delamination and debonding of stiffened components are experienced via an extensive experimental campaign. The first results obtained in detecting and localization damage are discussed, showing the effectiveness of this approach.