Numerical Prediction of Failure in Composite T-Joints Using Progressive Damage Modelling

Sápi, Zsombor; Butler, Richard; Rhead, Andrew

doi:10.2514/6.2018-0221

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…Prior research of the damage analysis of composite overlays focuses on disbond of the adhesives [15][16][17][18][19] and fracture behavior of the bonded metallic substrates [20][21][22][23][24]. Progressive damage in composites has been widely investigated [for example, [25][26][27][28][29][30][31]]. Previous studies have demonstrated that the damage within the composite patch can substantially reduce the performance of the repair or reinforcement [32,33].…”

Section: Introductionmentioning

confidence: 99%

Nondeterministic Parameter Space Characterization of the Damage Tolerance of a Composite/Metal Structure

Arndt

TerMaath

2022

AIAA SCITECH 2022 Forum

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An integrated experimental, computational, and non-deterministic approach is demonstrated to predict the damage tolerance of an aluminum plate reinforced with a cocured bonded quasi-isotropic E-glass/epoxy composite overlay and to determine the most sensitive material parameters and their ranges of influence on the damage tolerance of the hybrid system. To simulate the complex progressive damage in the repaired structure, a high fidelity three-dimensional finite element model is developed and validated using four-point bend testing to investigate potential damage mechanisms. A surrogate model is then generated to explore the complex parameter space of this model. Global sensitivity analysis and uncertainty quantification are performed for non-deterministic analysis to characterize the energy absorption capability of the patched structure relative to these influential design properties. Additionally, correlating the data quality of the material parameters with the sensitivity analysis results provides practical guidelines for model improvement and the design optimization of the patched structure.

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