Acoustic crystal explosives
US8082844B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Apr 28, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D5/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An acoustic crystal explosive, which gains its properties from both its periodic structure and its composition, may be configured to suppress or enhance the sensitivity of detonation of the explosive in response to an acoustic wave. An explosive material and a medium (explosive or inactive) are arranged in a periodic array that provides local contrast modulation of the acoustic index to define a band gap in the acoustic transmission spectrum of the explosive materials. At least one defect cavity in the periodic array creates a resonance in the band gap. The defect cavity concentrates energy from an incident acoustic (shock) wave to detonate the explosive. Multiple defect cavities may be configured to provide a desired shaped charge or volumetric detonations. Means may be provided to reprogram the defect cavity(ies) to reconfigure the explosive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.