Volume 46, Issue 9 pp. 3244-3260
ORIGINAL ARTICLE

Comprehensive progressive damage analyses of mixed-mode repaired panels: How composite patch sizes and layups affects restarting fatigue crack growth

Hossein Hosseini-Toudeshky

Corresponding Author

Hossein Hosseini-Toudeshky

Fatigue and Fracture Laboratory, Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran

Correspondence

Hossein Hossein-Toudeshky, Fatigue and Fracture Laboratory, Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran 15914, Iran.

Email: [email protected]

Search for more papers by this author
Fariborz Sheibanian

Fariborz Sheibanian

Fatigue and Fracture Laboratory, Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran

Search for more papers by this author
Pourya Sabzy

Pourya Sabzy

Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran

Search for more papers by this author
Meisam Jalalvand

Meisam Jalalvand

Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, UK

Search for more papers by this author
First published: 09 June 2023

Abstract

In this paper, comprehensive progressive damage analyses are performed to evaluate the effects of patch sizes and layups on restarting crack growth of single-side repaired aluminum panels with central inclined cracks under high cycle fatigue loading. Complicated nonlinear damage behavior of adhesive bonding, composite patch, mixed-mode cracks, and fatigue loadings require precise numerical tools to consider and analyze the coupling effects of various damages on fatigue life of such complex component. In progressive damage analysis, high cycle fatigue cohesive zone modeling is used for debonding of patch, and high cycle fatigue continuum damage model used for composite patches. Practical composite patch layups and sizes are selected in huge number of models, and the restarting crack growth life is predicted. The obtained results show the possibility of increasing the restarting crack growth life using an appropriate composite patch layup and geometry dimensions.

Highlights

  • Restarting crack growth of single-side repaired panels fatigue loading
  • Comprehensive progressive damage analyses
  • Effects of composite patch size and layup on restarting crack growth
  • Crack growth retardation using appropriate composite patch

CONFLICT OF INTEREST STATEMENT

None.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.