Simulation and guided wave-based monitoring of damage evolution of the stiffened composite open panel under shear loads
WANG Ying
CHEN Jian
YUAN Shenfang
Abstract：[Objective]Stiffener debonding frequently occurs in longitudinal-transverse stiffened composite panels with large cutouts of typical aerospace structure under in-service shear loading.Simulation and online monitoring of the damage evolution process are critical to structural safety guarantee and operation and maintenance cost reduction.However,few studies have focused on the progressive damage simulation of longitudinal-transverse stiffened composite panels with large cutouts,and quantitative guided wave monitoring for the real debonding damage evolution process is rarely reported.To solve this problem,research on damage evolution simulation and guided wave monitoring of stiffened composite panels with cutouts under shear loading was carried out.[Methods]Firstly,the modeling method of the progressive damage finite element model for longitudinal-transverse stiffened composite panels with large cutouts under shear loading was investigated,and the structural damage evolution process was obtained.Secondly,the piezoelectric guided wave technique was adopted to carry out online monitoring research on the entire evolution process of stiffener debonding.Thirdly,based on the simulated evolution results of"debonding degree-load",a quantitative online guided wave monitoring model characterized by"debonding degree-damage factor"was established.Finally,shear tests were performed to verify the effectiveness of the simulation.[Results]The results show that the proposed model can realize online quantitative monitoring of stiffener debonding damage in stiffened composite panels with cutouts under shear loading.
Keywords：Shear loadComposite materialLongitudinal-transverse stiffened composite panel with large cutoutSimulation of stringer delamination evolutionGuided wave quantitative monitoring
Publication Date：2026-07-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 59-66 )