Experimental Calibration of the NSWC Expanded Large Scale Gap Test
Abstract
The NSWC ELSGT is to be used as the standard test for the UN and the NATO to determine the shock sensitivity of candidate extremely insensitive detonating substances. This report presents the first complete experimental calibration of the ELSGT and the techniques used to obtain the calibration data. In particular, an improved method of differentiating photographic streak camera (x, t) data is described. Streak camera data must be numerically differentiated to obtain wave velocities as functions of time or distance. For time-varying or structured data, techniques such as spline or polynomial fitting are frequently employed. These techniques are usually adjusted by the researcher until the results are acceptable. Consequently, the results can be biased by the method. A new, unbiased, efficient, and accurate method based on the Kaiser and Reed algorithm is described. This method will be demonstrated by its application to the first experimental calibration of the ELSGT. Large Scale Gap Test, Kaiser and Reed Algorithm, Shock Sensitivity, Detonation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA253813
Entities
People
- Douglas G. Tasker
- Robert N. Baker Jr
Organizations
- Naval Surface Warfare Center