Probabilistic Multi-Scale Damage Tolerance Modeling of Composite Patches for Naval Aluminum Alloys
Abstract
The Office of Naval Research (ONR) Structural Reliability Program strives to assure successful performance of a ship hull structure over its intended life. Due to loading and structural degradation given extreme operating environments, ship hulls may require repair or reinforcement during their lifetimes. One type of modification with a proven service record is to adhesively bond a composite overlay onto the metallic structure. (The system of a composite overlay bonded to an aluminum substrate is herein defined as a hybrid structure.) While in-service demonstration of this repair method establishes its successful application to ship structure, our understanding of the complex damage tolerance behavior and structural performance of these hybrid structural systems is lagging behind the implementation, as are standard reliability-based design procedures. Therefore, composite overlays are currently installed only as temporary repairs, and a thorough understanding of hybrid structure behavior under service loading and its long term performance is necessary to enable its reliable and widespread implementation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 2018
- Accession Number
- AD1074284
Entities
People
- Stephanie C. Termaath
Organizations
- University of Tennessee