{"title":"晶界滑动引起的柱状冰裂纹成核观察","authors":"R.C. Picu, V. Gupta","doi":"10.1016/0956-7151(95)90163-9","DOIUrl":null,"url":null,"abstract":"<div><p>Biaxial compression experiments were carried out to investigate the mechanisms of crack nucleation in columnar freshwater ice. For strain rates higher than 10<sup>−3</sup> s<sup>−1</sup> at — 10°Cm, it is observed that crack nucleation is preceded by grain boundary sliding which results in local decohesion pockets spread intermittently along the boundary facets. The experimental results are shown to support the crack nucleation model presented in the companion paper.</p></div>","PeriodicalId":100018,"journal":{"name":"Acta Metallurgica et Materialia","volume":"43 10","pages":"Pages 3791-3797"},"PeriodicalIF":0.0000,"publicationDate":"1995-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-7151(95)90163-9","citationCount":"29","resultStr":"{\"title\":\"Observations of crack nucleation in columnar ice due to grain boundary sliding\",\"authors\":\"R.C. Picu, V. Gupta\",\"doi\":\"10.1016/0956-7151(95)90163-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Biaxial compression experiments were carried out to investigate the mechanisms of crack nucleation in columnar freshwater ice. For strain rates higher than 10<sup>−3</sup> s<sup>−1</sup> at — 10°Cm, it is observed that crack nucleation is preceded by grain boundary sliding which results in local decohesion pockets spread intermittently along the boundary facets. The experimental results are shown to support the crack nucleation model presented in the companion paper.</p></div>\",\"PeriodicalId\":100018,\"journal\":{\"name\":\"Acta Metallurgica et Materialia\",\"volume\":\"43 10\",\"pages\":\"Pages 3791-3797\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1995-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0956-7151(95)90163-9\",\"citationCount\":\"29\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Metallurgica et Materialia\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0956715195901639\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica et Materialia","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0956715195901639","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Observations of crack nucleation in columnar ice due to grain boundary sliding
Biaxial compression experiments were carried out to investigate the mechanisms of crack nucleation in columnar freshwater ice. For strain rates higher than 10−3 s−1 at — 10°Cm, it is observed that crack nucleation is preceded by grain boundary sliding which results in local decohesion pockets spread intermittently along the boundary facets. The experimental results are shown to support the crack nucleation model presented in the companion paper.
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