Accession Number : AD0839983
Title : PROCEDURE FOR FABRICATION AND OPERATION OF MANGANIN SHOCK PRESSURE GAGES.
Descriptive Note : Rept. for 6 Dec 67-6 May 68,
Corporate Author : STANFORD RESEARCH INST MENLO PARK CA
Personal Author(s) : Keough, Douglas D.
Report Date : AUG 1968
Pagination or Media Count : 102
Abstract : The four-terminal, manganin in C-7 epoxy gage is a piezoresistive transducer used to measure shock stress as a function of time at the interface of a test sample and gage. Knowledge of 'cross-curve' states of the sample is required to relate transducer stress to actual stresses in the sample. Interface stress measurement accuracies, which vary between plus or minus 3 percent and plus or minus 6 percent, depend on the range of stress to which the gage is subjected. Fabrication of a four-terminal gage with a nominal resistance of either 1 ohm or 10 ohms is relatively straightforward. The useful stress range covered by the 1-ohm gage is from about 10 kbar to 300 kbar. The 10-ohm gage can be used for subkilobar recording. A more accurate knowledge of the stress-resistance response of manganin and of the Hugoniot of C-7 epoxy would enhance the usefulness of the four-terminal gage as a quantitative tool. (Author)
Descriptors : (*PIEZOELECTRIC GAGES, PERFORMANCE(ENGINEERING)), MANUFACTURING, OPERATION, COPPER ALLOYS, MANGANESE ALLOYS, NICKEL ALLOYS, TRANSDUCERS, SHOCK(MECHANICS), STRESSES.
Subject Categories : Fabrication Metallurgy
Test Facilities, Equipment and Methods
Distribution Statement : APPROVED FOR PUBLIC RELEASE