Elastomeric Polymer-by-Design for Blast-Induced Shock-Wave Management
Abstract
Polyurea is a mierophase-separated block copolymer that has been shown to effectively mitigate blast-induced failure of steel and other structural materials. Polyurea exhibits unique properties, including pressure-dependent compressive stiffness, low tensile stiffness, high dissipation, and residual stiffness at high deformation levels, as a result of its morphology. These and other mechanical and physical attributes of block copolymers can be greatly enhanced and specifically tailored to manage stress waves over multi-frequency ranges. The technical objectives of the ONR-BRC are (I) to develop rules and tools for the creation of elastomer-based composites that can mitigate shocks and stress pulses over broad ranges of frequency and amplitude and (2) to optimize their compositions and characteristics at molecular/nano-, micro-, meso- and macro-scales. An integrated approach was used to address the fabrication, modeling, and characterization needs; involving integration of- Numerical and analytical design- Chemical synthesis, Elastomer-based composites, and Characterization and validation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2015
- Accession Number
- ADA621961
Entities
People
- Siavouehe Nemat-nasser
Organizations
- University of California, San Diego