MISC

2003年8月

Electric signals accompanying fracture of granite

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
  • A Tsutsumi
  • ,
  • S Tanaka
  • ,
  • N Shirai
  • ,
  • Y Enomoto

42
8
開始ページ
5208
終了ページ
5212
記述言語
英語
掲載種別
DOI
10.1143/JJAP.42.5208
出版者・発行元
INST PURE APPLIED PHYSICS

Pre-heated specimens of granite were uniaxially compressed. Electric charge of the order of 10(-11)C accompanying fracture of the specimen was measured within a deformation accelerating precursory period until complete failure occurred. Specimens that had been pre-heated to 200degreesC exhibited the highest, electric charge, and signal intensity decreased with increasing pre-heating temperature. Meanwhile, uniaxial strength of the specimen Was the highest, 220 MPa, for the specimens that had been pre-heated to 200degreesC and it decreased with pre-heating temperature. Our results suggest that the intensity of the electric precursor signal detected prior to failure positively correlates,with uniaxial strength. ESR signal intensity of the E' center of quartz contained in the fractured granite specimen decreased upon failure. Stress-induced annealing of the E' center is the suggested cause of the signal decrease.

リンク情報
DOI
https://doi.org/10.1143/JJAP.42.5208
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000185422900067&DestApp=WOS_CPL
ID情報
  • DOI : 10.1143/JJAP.42.5208
  • ISSN : 0021-4922
  • identifiers.cinii_nr_id : 9000239248799
  • Web of Science ID : WOS:000185422900067

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