Models for Damage-Resistant Design of Composite Structures
Abstract
The principal goal of this research is development of new techniques leading to improvement of damage and penetration resistance of laminated composite structures, such as Army vehicles and their armor The focus is on control and retardation of damage and fracture in fibrous composites, through modified fabrication procedures that include fiber prestress that can be applied with available filament winding or fiber placement equipment Novel optimization techniques were used to find fiber prestress magnitudes in individual plies, that accommodate loading-induced ply and local stresses within initial and subsequent damage envelopes both inside and at laminate free edges Stress relaxation in prestressed laminates with viscoelastic matrices, together with creep deformation under constant rate loading or large changes in temperature are included in our results Applications of fiber prestress have been identified and explored in compressive prestressing of ceramic/FRp armor plates for improved resistance to projectile penetration Design of composite-reinforced gun barrels can also be performed using the results of this investigation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 2002
- Accession Number
- ADA414027
Entities
People
- George J. Dvorak
Organizations
- Rensselaer Polytechnic Institute