DESIGN AND INSTRUMENTATION OF AN EARTH SHOCK TUBE
ATLANTIC RESEARCH CORP ALEXANDRIA VA
Pagination or Media Count:
The major objective was to design an instrumented earth shock tube for one-dimensional propagation. Ideally, the lateral strains should not interfere with the axial motion of the soil particles. However, the side friction was too great. Therefore, Teflon powder between the soil sample and the confining tube was used to reduce friction. Testing of this system indicated that imbedded stress gage behavior should be explored before further testing of the earth shock tube. Two laboratory devices - the dynamic odometer and the dynamic triaxial apparatus were designed for looking at stress gage behavior and one-dimensional soil constants. Although results were obtained, further investigations are required to complete the evaluation of the above system. An earth strain gage and a horizontal displacement meter were developed.
- Test Facilities, Equipment and Methods