Test and Analysis of Composite Sandwich Panels With Impact Damage
Abstract
Flat and curved (1.07-m radius) sandwich panels of various widths (83, 152, and 305 mm) were impacted and loaded uniaxially in compression until failure. Test results indicated that the width and curvature of the specimen had little effect on the ultimate strength. However, the point at which the impact damage grew as indicated by a nonlinear strain response was a function of The width and curvature of the specimen. An analytical formulation based on nonlinear deformations that included stillness reduction, due to the impact, was able to model the nonlinear response of the specimens. The width and curvature affects the point at which the damage grows by resulting in varying stillness in the facesheet. The formulation also indicates that the damage grew until it reached a critical size and arrested itself This was observed in the experiments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2002
- Accession Number
- ADA401974
Entities
People
- Anthony J. Vizzini
- R. C. Moody
Organizations
- University of Maryland