Material and Acoustical Studies of Elastic Protein-Based Polymers Engineered for Selected Acoustical and Non-Acoustical Characteristics
Abstract
Elastic protein-based polymers have been synthesized. These are solid materials having been cross-linked by gamma-ray irradiation. Three of these samples have been measured. The results show that their elastic properties are different from traditional rubbers and polyurethanes. Typical absorbent materials have loss factors that rise with increase in frequency and a shear modulus that is relatively flat with frequency. On the other hand, the protein-based polymers have large loss factors at low frequencies, have loss factor that decrease with frequency, and have shear modulus that sharply increase at the high frequency end. These results demonstrate that these new materials hold great promise in their application as materials for broad band anechoic coatings for ships and submarines.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 24, 2002
- Accession Number
- ADA403518
Entities
People
- Jack Y. Dea
- Lev Sheiba
Organizations
- Naval Information Warfare Systems Command