Accession Number : AD0700369

Title :   AN INVESTIGATION OF STRAIN SENSITIVITY,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Arseneva-Geil,A. N.

Report Date : 16 SEP 1969

Pagination or Media Count : 9

Abstract : The following findings are the result of experimental work with the tensoeffect of compacted lead sulfide powder: no matter what the initial resistance of the tensoelement (strain gage), its resistance-vs-pressure characteristics are linear; no definite relation between resistance and strain sensitivity was observed in specimens not thermally treated; specimen resistance linearly decreases as temperature increases within 240-330 K; up to 180K, the resistance linearly increases; the strain sensitivity slightly increases or remains constant within 290-330K; with a load current of 1 ma, the characteristics are still linear; some tensoelements can operate with currents of 10 ma; tensoelement resistances increase with time, their sensitivity remains constant; the characteristics of most specimens have improved with time; after a thermal (820K) treatment, the sensitivity reaches very high values, both sensitivity and resistance vary with time according to the same law which corresponds to Slater's barrier theory. (Author)

Descriptors :   (*STRAIN GAGES, SENSITIVITY), SEMICONDUCTORS, LEAD COMPOUNDS, SULFIDES, PIEZOELECTRIC GAGES, STRAIN(MECHANICS), THERMAL PROPERTIES, USSR

Subject Categories : Electrical and Electronic Equipment
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE