BLAST ATTENUATION BY TUNNEL LINERS.
Abstract
Tests were conducted to determine the attenuating effects of special acoustic lining materials on nuclear blast induced air shock waves in ventilation tunnels. The two sample materials tested, together with their support fixtures, restricted normal air flow by less than one half inch water pressure drop. The NCEL eight-inch shock tube generated the simulated nuclear blasts varying in peak overpressure from 6 to 36 psi. Shock pressure reductions of 40 to 60 percent were recorded for the test sample-support fixture combinations. One material produced 15 percent attenuation and the other produced 30 percent attenuation. In each case the effect was independent of incident shock pressure level. These results demonstrate that within the test pressure range, diffusion type attenuating materials in the proper configuration can significantly reduce nuclear detonation induced air shock pressures in ventilation tunnels and ducts. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1967
- Accession Number
- AD0825836
Entities
People
- John A. Norbutas
Organizations
- Naval Facilities Engineering Service Center