Experimental Characterization of Nonlinear Viscoelastic and Adhesive Properties of Elastomers
Abstract
This report describes the characterization of the viscoelastic properties of polyurea and the failure of ductile materials at high strain rates. The mechanical properties of polyurea were determined under monotonic loading conditions, both in the unconfined and confined compression configurations. Direct measurements of the volumetric and shear response has been used to show that the shear resistance is nearly negligible, while the bulk modulus increases significantly with pressure. Expanding ring experiments were performed on Al 6061-0 in order to determine the onset and growth of necking localization and eventual failure. Real-time images of the failure process were obtained and analyzed to determine the criterion for dynamic strain localization in uniaxial tension. Further work on expanding ring with polyurea coating will be performed through a continuing research program at the University of Texas at Austin.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 27, 2006
- Accession Number
- ADA451567
Entities
People
- K. Ravi-chander
- R. S. Barsoum
Organizations
- University of Texas at Austin