Accession Number:

ADA232178

Title:

Stress Gage Testing for Wet CARES

Descriptive Note:

Final rept.

Corporate Author:

SRI INTERNATIONAL MENLO PARK CA

Report Date:

1988-06-01

Pagination or Media Count:

59.0

Abstract:

Ground shock measurements are important for interpreting field experiments and validating computer codes. This report describes a material- independent approach to stress gage validation, and applies this approach in two experiments using the mutual inductance particle velocity MIPV gage and a stress gage using flat pack circuits in rained sand test beds. The two experiments are 1 MIPV gage validation experiment in rained sand test beds performed in SRI 2-foot-diameter flyer plate facility and 2 a flatpack stress gage validation experiment in a rained-sand test bed in AFWL large diameter flyer plate shot 8-4. Recommendations include 1 applying the gage validation approach to other materials e.g., wet soils, hard rock 2 increasing the diameter of the AFWL flyer plate facility for rained sand test beds and measuring the time of arrival and magnitude of two-dimensional effects in subsequent experiments, 3 performing high resolution two-dimensional calculations of flatpack response to more accurately determine the mechanical state of the ytterbium foil inside the flatback, and 4 continuing testing of our ytterbium foils to refine the piezoresistance coefficients used to model ytterbium in our flatpack response model.

Subject Categories:

  • Soil Mechanics
  • Test Facilities, Equipment and Methods
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE