Damage tolerance of flush repairs of dissimilar composite material systems

Goh, J 2015, Damage tolerance of flush repairs of dissimilar composite material systems, Doctor of Philosophy (PhD), Aerospace, Mechanical and Manufacturing Engineering, RMIT University.

Document type: Thesis
Collection: Theses

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Goh.pdf Thesis application/pdf 3.98MB
Title Damage tolerance of flush repairs of dissimilar composite material systems
Author(s) Goh, J
Year 2015
Abstract Current repair techniques require the repair material to be identical to the parent structure in ply thickness, orientations and material. This poses a difficulty for repair engineers and manufacturers because of the lack of parent materials or the lack of certification of the parent material to be used along structural adhesives for field repair applications. In this case, the use of materials different from the parent structures in both ply thickness and mechanical properties presents new challenges, such as mismatch in local and global stiffness. Thus, it is important to address this new problem of scarf repairs with mismatched or dissimilar adherends. This thesis investigates the residual strength of similar and dissimilar scarf joints, and developed numerical models in predicting falure. Furthere tests and numerical models were developed for the fatigue durability of scarf joints with similar adherends.
Degree Doctor of Philosophy (PhD)
Institution RMIT University
School, Department or Centre Aerospace, Mechanical and Manufacturing Engineering
Subjects Aerospace Structures
Aerospace Materials
Numerical Analysis
Keyword(s) Composite material
Composite repair
Scarf repair
Cohesive zone model
Virtual crack closure technique
Dissimilar material
Bonded repair
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Created: Tue, 06 Oct 2015, 10:25:18 EST by Keely Chapman
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