Design Methodology for Bonded Repair to Partial Through-Thickness Damage
Abstract
Partial through-thickness damage to metallic and composite structures, like those caused by corrosion damage of metals or foreign object impact to composites, can be repaired by adhesively bonding an insert and an external doubler. The design methodology for these types of repairs is based on a simplified analysis in which the insert is assumed to be bonded to the flat bottom of the cutout area. This report presents an investigation of the accuracy and limitations of the current design methodology using the finite element method. Improved design methods are also presented, including the optimum taper angle of the grindout and the required overlap length. Validity of the design methodology was assessed by comparison with experimental testing of repairs tapered at different angles.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2008
- Accession Number
- ADA494216
Entities
People
- Chun H. Wang
- Dina Pilalis
Organizations
- Defence Science and Technology Group