Residual Strength Analysis of Stiffened Aluminum Panels with Widespread Fatigue Damage

Zhong Li; Sen Ge; Guo Zhi Lv; Li Chen; Hui Liang Ding

doi:10.4028/www.scientific.net/AMR.33-37.291

Paper Titles

Fatigue of Metal Free Reed due to Self-Excited Oscillation
p.267

Characterizing Fatigue Crack Closure by Numerical Analysis
p.273

Damage Identification of Multi-Type Joints with Using Electro-Impedance Method by Smart Sensors
p.279

Improved Impedance Method and Guided Wave Technique for Damage Assessment of Beam Structures Using PZT Patches
p.285

Residual Strength Analysis of Stiffened Aluminum Panels with Widespread Fatigue Damage
p.291

Study on the Damage Tolerance of a Stiffened Panel with a Skin Pad
p.297

Evaluation on Interface Fracture Behavior of HVAS Coating/Substrate System Based on Weibull Stress Criterion
p.301

Subsonic Interface Crack with Crack Face Contact
p.307

Location of Initial Debonding and Stress Singularity at Interface End
p.315

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Residual Strength Analysis of Stiffened Aluminum Panels with Widespread Fatigue Damage

Abstract:

Widespread fatigue damage (WFD) is an important concern of aging aircrafts. Residual strength of stiffened panels with widespread fatigue damage was evaluated by an engineering approach and a finite element method respectively. Nine stiffened panels with three types of damage were tested for their residual strength. The predictions are in good agreement with the experiment results and it is shown the methods could be used in an engineering practice for the residual strength evaluation with the acceptable accuracy. It can be seen from this research that WFD could result in significantly reduction in the residual strength of stiffened panels.