Determination of Threshold Damage in Radome Materials by Discrete Impact in a Ballistics Range
Abstract
Techniques for the study of discrete impact with solid and liquid particles on materials specimens have been applied in the NOL Aerophysics Range. The techniques and results for the determination of threshold impact damage of control materials and of a slip cast fuzed silica are presented. The preliminary results on drop distortion and drop stripping are observed and compared with analytical estimates. Data were obtained for several materials with water droplets of approximately lmm diameter. Data were also obtained for limited conditions with .050 in. and .070 in. diameter lead spheres. Velocities from approximately 300 feet per second through 3500 feet per second were obtained, depending upon the material under investigation. The major effort in this program phase was the investigation of slip cast fuzed silica at a pressure of one atmosphere. Distinct and repeatable damage thresholds were observed with water impact on this material.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1971
- Accession Number
- AD0728030
Entities
People
- J. L. Lankford
- R. A. Leverance
Organizations
- Naval Ordnance Laboratory