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Title: Design and development of a miniature column-based interface (MCBI) stress gage
Authors: United States. Defense Nuclear Agency.
Rickman, Denis D.
Keywords: Interface stress
Lateral sensitivity
Unground construction
Soil-structure interaction
Stress waves
Explosion effects
Blast effects
Stress gage
Publisher: Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; SL-93-3.
Description: Technical Report
Abstract: Tests are routinely conducted to evaluate the survivability, under simulated battlefield conditions, of buried military structures subjected to high-explosive loadings. The survivability assessments require the measurement of dynamic normal stresses induced at soil/structure interfaces. Stresses in excess of 10,000 psi and accelerations greater than 100,000 g's may be applied at interface locations. Normal-incidence interface stress gages currently used in such tests are incapable of accurately measuring stresses above 5,000 psi, and are sensitive to lateral accelerations and structure-transmitted stresses which distort the measurement. This study explores the design, development, and testing of a miniature, column-based, interface (MCBI) stress gage. The MCBI gage is designed to measure normal stresses up to 35,000 psi. Laboratory tests indicate that the gage produces a linear output due to applied pressure and is virtually insensitive to lateral stresses. Explosive tests have shown the MCBI gage compares favorably to commonly-used interface stress gages at stresses up to 3,000 psi, and is survivable at stresses up to 25,000 psi.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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